[continued from previous message]

Apr 15 - Comet 49P/Arend-Rigaux At Opposition (2.014 AU)
Apr 15 - Comet C/2018 F4 (PANSTARRS) At Opposition (3.316 AU)
Apr 15 - Comet 61P/Shajn-Schaldach At Opposition (4.245 AU)
Apr 15 - Comet C/2017 F2 (PANSTARRS)Closest Approach To Earth (6.675 AU)
Apr 15 - Asteroid 8861 Jenskandler Occults HIP 81724 (4.5 Magnitude Star)
Apr 15 - Asteroid 215423 Winnecke Closest Approach To Earth (1.371 AU)
Apr 15 - Asteroid 4149 Harrison Closest Approach To Earth (1.387 AU)
Apr 15 - Asteroid 30857 Parsec Closest Approach To Earth (1.435 AU)
Apr 15 - Asteroid 46977 Krakow Closest Approach To Earth (2.050 AU)
Apr 15 - Johannes Stark's 145th Birthday (1874)
Apr 16 - Asteroid 1584 Fuji Closest Approach To Earth (1.390 AU)
Apr 16 - Asteroid 129564 Christy Closest Approach To Earth (1.553 AU)
Apr 16 - Asteroid 2023 Asaph Closest Approach To Earth (2.586 AU)
Apr 16 - Asteroid 3693 Barringer Closest Approach To Earth (2.731 AU)
Apr 16 - Dwarf Planet 136108 Haumea At Opposition (49.539 AU)
* Apr 17 - Cygnus NG-11 Antares 230 Launch (International Space Station)
Apr 17 - Comet 257P/Catalina At Opposition (2.869 AU)
Apr 17 - Comet P/2005 Y2 (McNaught) At Opposition (3.766 AU)
Apr 17 - Asteroid 2579 Spartacus Closest Approach To Earth (1.107 AU)
Apr 17 - Asteroid 2614 Torrence Closest Approach To Earth (1.526 AU)
Apr 17 - Asteroid 1740 Paavo Nurmi Closest Approach To Earth (1.926 AU)
Apr 17 - Asteroid 6824 Mallory Closest Approach To Earth (2.700 AU)
Apr 17 - 5th Anniversay (2014), LADEE, Moon Impact
Apr 17 - 55th Anniversary (1964), Jerrie Mock Becomes 1st Woman To Fly Solo Around The World
Apr 17 - Giovanni Domenico Maraldi's 310th Birthday (1709)
Apr 18 - Aten Asteroid 2012 XO134 Near-Earth Flyby (0.038 AU)
Apr 18 - Asteroid 14764 Kilauea Closest Approach To Earth (0.907 AU)
Apr 18 - Asteroid 26715 South Dakota Closest Approach To Earth (1.952 AU)
* Apr 18 - Asteroid 40227 Tahiti Closest Approach To Earth (3.348 AU)
Apr 19 - Comet P/2017 S8 (PANSTARRS) Closest Approach To Earth (2.299 AU)
Apr 19 - Comet C/2017 X1 (PANSTARRS) Closest Approach To Earth (4.248 AU)
Apr 19 - Aten Asteroid 2016 JP Near-Earth Flyby (0.049 AU)
Apr 19 - Asteroid 2999 Dante Closest Approach To Earth (1.274 AU)
Apr 19 - Asteroid 2409 Chapman Closest Approach To Earth (1.588 AU)
Apr 19 - Asteroid 1489 Attila Closest Approach To Earth (1.776 AU)
Apr 19 - Asteroid 7000 Curie Closest Approach To Earth (2.063 AU)
Apr 19 - Gertrude Bacon's 145th Birthday (1874)
Apr 20 - Comet P/2005 GF8 (LONEOS) Closest Approach To Earth (2.083 AU)
Apr 20 - Comet P/2002 EJ57 (LINEAR) At Opposition (2.535 AU)
Apr 20 - Comet P/2007 Q2 (Gilmore) At Opposition (4.062 AU)
Apr 20 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth</a> (0.151 AU)
Apr 20 - Apollo Asteroid 14827 Hypnos Closest Approach To Earth (1.222 AU)
Apr 20 - Asteroid 23638 Nagano Closest Approach To Earth (1.323 AU)
Apr 20 - Asteroid 1913 Sekanina Closest Approach To Earth (2.098 AU)
Apr 20 - Asteroid 8889 Mockturtle Closest Approach To Earth (2.478 AU)
Apr 20 - Asteroid 2848 ASP Closest Approach To Earth (2.820 AU)
Apr 20 - Vincenzo Cerulli's 160th Birthday (1859)
Apr 21 - Easter Sunday
Apr 21 - Apollo Asteroid 2016 WQ3 Near-Earth Flyby (0.073 AU)
Apr 21 - Asteroid 5608 Olmos Closest Approach To Earth (1.625 AU)
Apr 21 - Asteroid 243097 Batavia Closest Approach To Earth (1.688 AU)
Apr 21 - Asteroid 13667 Samthurman Closest Approach To Earth (1.787 AU)
Apr 21 - Jean-Bapiste Biot's 245th Birthday (1774)
Apr 21 - Jan van Riebeeck's 400th Birthday (1619)
Apr 22 - Earth Day
Apr 22 - Lyrids Meteor Shower Peak
Apr 22 - Comet 17P/Holmes At Opposition (3.400 AU)
Apr 22 - Comet P/2017 U3 (PANSTARRS) Perihelion (4.444 AU)
Apr 22 - Atira Asteroid 2015 DR215 Closest Approach To Earth (1.305 AU)
Apr 22 - Asteroid 67 Asia Closest Approach To Earth (1.452 AU)
Apr 22 - Asteroid 11836 Eileen Closest Approach To Earth (2.127 AU)
Apr 22 - Immanuel Kant's 295th Birthday (1724)
Apr 23 - Comet P/2010 TO20 (LINEAR-Grauer) At Opposition (4.846 AU)
Apr 23 - Comet C/2017 F2 (PANSTARRS) At Opposition (6.684 AU)
Apr 23 - Apollo Asteroid 478784 (2012 UV136) Near-Earth Flyby (0.074 AU)
Apr 23 - Asteroid 4352 Kyoto Closest Approach To Earth (2.240 AU)
Apr 24 - Asteroid 3192 A'Hearn Closest Approach To Earth (1.177 AU)
Apr 24 - Asteroid 69263 Big Ben Closest Approach To Earth (1.427 AU)
Apr 24 - Asteroid 10001 Palermo Closest Approach To Earth (1.688 AU)
Apr 24 - Asteroid 76272 De Jong Closest Approach To Earth (2.290 AU)
Apr 24 - Asteroid 1832 Mrkos Closest Approach To Earth (2.586 AU)
Apr 25 - Moon Occults Saturn
Apr 25 - Moon Occults Dwarf Planet Pluto
Apr 25 - Comet P/2007 S1 (Zhao) At Opposition (4.087 AU)
Apr 25 - Comet P/2010 TO20 (LINEAR-Grauer) Closest Approach To Earth (4.846 AU)
Apr 25 - Asteroid 3414 Champollion Closest Approach To Earth (1.313 AU)
Apr 25 - Asteroid 12608 Aesop Closest Approach To Earth (1.582 AU)
Apr 25 - Asteroid 9879 Mammuthus Closest Approach To Earth (1.694 AU)
Apr 25 - Asteroid 3265 Fletcher Closest Approach To Earth (1.725 AU)
Apr 25 - Asteroid 24750 Ohm Closest Approach To Earth (1.984 AU)
Apr 25 - Asteroid 10168 Stony Ridge Closest Approach To Earth (2.001 AU)
Apr 25 - Asteroid 25000 Astrometria Closest Approach To Earth (2.036 AU)
Apr 25 - Asteroid 1140 Crimea Closest Approach To Earth (2.091 AU)
Apr 25 - Apollo Asteroid 2101 Adonis Closest Approach To Earth (2.301 AU)
Apr 25 - 50th Anniversary (1969), Bovedy Meteorite Fall (Hit Store in Ireland)
Apr 25 - Guglielmo Marconi's 145th Birthday (1874)
Apr 26 - Asteroid 263251 Pandabear Closest Approach To Earth (1.486 AU)
Apr 26 - Asteroid 1008 La Paz Closest Approach To Earth (2.327 AU)
Apr 26 - Asteroid 99905 Jeffgrossman Closest Approach To Earth (2.684 AU)
Apr 26 - Owen Richardson's 140th Birthday (1879)
Apr 27 - Apollo Asteroid 3103 Eger Closest Approach To Earth (1.013 AU)
Apr 27 - Asteroid 12426 Racquetball Closest Approach To Earth (1.526 AU)
Apr 27 - Asteroid 5050 Doctorwatson Closest Approach To Earth (1.678 AU)
Apr 27 - Asteroid 2636 Lassell Closest Approach To Earth (1.832 AU)
Apr 27 - Patrick Wiggins' 70th Birthday (1949)
Apr 28 - Comet P/2014 U4 (PANSTARRS) At Opposition (3.353 AU)
Apr 28 - Asteroid 10958 Mont Blanc Closest Approach To Earth (1.125 AU)
Apr 28 - Asteroid 8627 Kunalnayyar Closest Approach To Earth (1.607 AU)
Apr 28 - Asteroid 3989 Odin Closest Approach To Earth (1.656 AU)
Apr 28 - Asteroid 9619 Terrygilliam Closest Approach To Earth (1.694 AU)
Apr 28 - Asteroid 19019 Sunflower Closest Approach To Earth (1.975 AU)
Apr 28 - Asteroid 4999 MPC Closest Approach To Earth (1.997 AU)
Apr 28 - Asteroid 6216 San Jose Closest Approach To Earth (2.006 AU)
* Apr 28 - Asteroid 11739 Baton Rouge Closest Approach To Earth (3.912 AU)
Apr 28 - Francis Baily's 245th Birthday (1774)
Apr 29 - Comet P/2017 S8 (PANSTARRS) At Opposition (2.314 AU)
Apr 29 - Comet C/2016 X1 (Lemmon) Perihelion (7.564 AU)
Apr 29 - Aten Asteroid 2008 GL20 Near-Earth Flyby (0.084 AU)
Apr 29 - Asteroid 8952 ODAS Closest Approach To Earth (1.452 AU)
Apr 29 - Asteroid 239672 SOFIA Closest Approach To Earth (1.824 AU)
Apr 29 - Asteroid 1940 Whipple Closest Approach To Earth (2.188 AU)
Apr 29 - Asteroid 60186 Las Cruces Closest Approach To Earth (2.369 AU)
Apr 29 - Kuiper Belt Object 42355 Typhon At Opposition (21.207 AU)
Apr 30 - Comet 250P/Larson Closest Approach To Earth (2.618 AU)
Apr 30 - Comet 257P/Catalina Closest Approach To Earth (2.843 AU)
Apr 30 - Comet C/2017 X1 (PANSTARRS) At Opposition (4.264 AU)
Apr 30 - Asteroid 12524 Conscience Closest Approach To Earth (1.498 AU)
Apr 30 - Asteroid 1157 Arabia Closest Approach To Earth (2.013 AU)
Apr 30 - Kuiper Belt Object 2014 FC69 At Opposition (83.997 AU)

May 2019
* May ?? - Crew Space Transportation 100 (CST-100) Atlas 5 Launch (Manned)
May ?? - Soyuz MS-13 Soyuz-FG Launch (International Space Station 59S)
May ?? - GPS 3A-3 Delta 4 M+ Launch
May 01 - Atira Asteroid 2013 JX28 Closest Approach To Earth (0.541 AU)
May 01 - Asteroid 3953 Perth Closest Approach To Earth (1.610 AU)
May 01 - Asteroid 631 Philippina Closest Approach To Earth (1.722 AU)
May 01 - Asteroid 10195 Nebraska Closest Approach To Earth (2.285 AU)
May 01 - 15th Anniversary (2004), Genesis, Earth Flyby
May 01 - 60th Anniversary (1959), Goddard Space Flight Center Established
May 01 - 70th Anniversary (1949), Gerard Kuiper's Discovery of Neptune Moon Nereid
May 02 - Moon Occults Asteroid 4 Vesta
May 02 - Asteroid 6790 Pingouin Closest Approach To Earth (1.200 AU)
May 02 - Amor Asteroid 3122 Florence Closest Approach To Earth (1.378 AU)
May 02 - Asteroid 3487 Edgeworth Closest Approach To Earth (1.563 AU)
May 02 - Asteroid 2160 Spitzer Closest Approach To Earth (2.037 AU)
May 02 - R. Scott Dunbar's 65th Birthday (1952)
May 03 - Comet 138P/Shoemaker-Levy Perihelion (1.703 AU)
May 03 - Amor Asteroid 4957 Brucemurray Closest Approach To Earth (1.066 AU)
May 03 - James Hey's 110th Birthday (1909)
May 04 - Star Wars Day
May 04 - Comet 306P/LINEAR At Opposition (1.827 AU)
May 04 - Comet 3D/Biela Closest Approach To Earth (2.294 AU)
May 04 - Asteroid 4103 Chahine Closest Approach To Earth (1.635 AU)
May 04 - Asteroid 160512 Franck-Hertz Closest Approach To Earth (2.027 AU)
May 04 - Kuiper Belt Object 2010 EK139 At Opposition (35.085 AU)
May 04 - 30th Anniversary (1989), Magellan Launch (Venus Orbiter)
May 04 - Fritz von Opel's 120th Birthday (1899)
May 05 - Space Day
May 05 - National Astronaut Day
May 05 - Eta Aquarids Meteor Shower Peak
May 05 - Comet 102P/Shoemaker At Opposition (3.461 AU)
May 05 - Comet 186P/Garradd Perihelion (4.389 AU)
May 05 - Amor Asteroid 2016 GF216 Near-Earth Flyby (0.092 AU)
May 05 - Amor Asteroid 1980 Tezcatlipoca Closest Approach To Earth (1.244 AU)
May 05 - Asteroid 84225 Verish Closest Approach To Earth (1.477 AU)
May 05 - 20th Anniversary (1999), Galileo, Callisto 20 Flyby
May 06 - Comet P/2012 O2 (McNaught) Perihelion (1.692 AU)
May 06 - Amor Asteroid 2009 MN8 Near-Earth Flyby (0.076 AU)
May 06 - Apollo Asteroid 1865 Cerberus Closest Approach To Earth (0.369 AU)
May 06 - Asteroid 18610 Arthurdent Closest Approach To Earth (1.823 AU)
* May 07 - Dragon CRS-18 (SpX 18)/GEDI Falcon 9 Launch (International Space Station)
May 07 - Comet 222P/LINEAR Closest Approach To Earth (1.281 AU)
May 07 - Comet 312P/NEAT At Opposition (2.832 AU)
May 07 - Comet 184P/Lovas At Opposition (3.245 AU)
May 07 - Comet C/2018 F4 (PANSTARRS) Closest Approach To Earth (3.253 AU)
May 07 - Asteroid 6758 Jesseowens Closest Approach To Earth (1.299 AU)
May 08 - Mercury Passes 1.4 Degrees From Uranus
May 08 - Comet 142P/Ge-Wang At Opposition (4.156 AU)
May 08 - Amor Asteroid 2014 KQ84 Near-Earth Flyby (0.080 AU)
May 08 - Asteroid 6128 Lasorda Closest Approach To Earth (1.292 AU)
May 08 - Asteroid 7645 Pons Closest Approach To Earth (1.560 AU)
May 09 - Comet P/2017 W3 (Gibbs) Closest Approach To Earth (3.676 AU)
May 09 - Amor Asteroid 2008 HS3 Near-Earth Flyby (0.037 AU)
May 09 - Apollo Asteroid 2017 RC Near-Earth Flyby (0.037 AU)
May 09 - Asteroid 2001 Einstein Closest Approach To Earth (0.860 AU)
May 09 - Asteroid 7707 Yes Closest Approach To Earth (1.347 AU)
May 09 - Asteroid 4738 Jimihendrix Closest Approach To Earth (1.706 AU)
May 09 - Centaur Object 144908 (2004 YH32) At Opposition (11.457 AU)
May 09 - Kuiper Belt Object 2010 FX86 At Opposition (45.104 AU)
May 09 - Oleg Atkov's 70th Birthday (1949)
May 10 - Asteroid 7169 Linda Closest Approach To Earth (1.304 AU)
May 10 - Asteroid 6594 Tasman Closest Approach To Earth (1.746 AU)
May 10 - Asteroid 64070 NEAT Closest Approach To Earth (1.997 AU)
May 10 - Asteroid 3264 Bounty Closest Approach To Earth (2.067 AU)
May 10 - Asteroid 31000 Rockchic Closest Approach To Earth (2.088 AU)
May 10 - 140th Anniversary (1879), Estherville Meteorite Shower in Iowa
May 11 - Comet P/2005 T2 (Christensen) At Opposition (2.165 AU)
May 11 - Comet C/2017 T3 (ATLAS) At Opposition (3.244 AU)
May 11 - Apollo Asteroid 468005 (2012 XD112) Near-Earth Flyby (0.098 AU)
May 11 - Asteroid 2867 Steins Closest Approach To Earth (1.262 AU)
May 11 - Asteroid 1000 Piazzia Closest Approach To Earth (1.470 AU)
May 11 - Asteroid 12818 Tomhanks Closest Approach To Earth (1.689 AU)
May 11 - Asteroid 3255 Tholen Closest Approach To Earth (2.312 AU)
May 11 - 10th Anniversary (2008), STS-125 Launch (Space Shuttle Atlantis, Last Hubble Space Telecope Servicing)
May 11 - Antony Hewish's 95th Birthday (1924)
May 12 - Comet 250P/Larson At Opposition (2.640 AU)
May 12 - Comet 138P/Shoemaker-Levy At Opposition (2.706 AU)
May 12 - Aten Asteroid 2009 FU23 Near-Earth Flyby (0.071 AU)
May 12 - Asteroid Aten Asteroid 2100 Ra-Shalom Closest Approach To Earth (0.474 AU)
May 12 - Asteroid 71000 Hughdowns Closest Approach To Earth (2.167 AU)
May 12 - Kuiper Belt Object 90568 (2004 GV9) At Opposition (38.611 AU)
May 13 - Comet 74P/Smirnova-Chernykh Closest Approach To Earth (2.863 AU)
May 13 - Comet P/2007 R2 (Gibbs) At Opposition (2.970 AU)
May 13 - Comet 162P/Siding Spring At Opposition (3.261 AU)
May 13 - Comet 224P/LINEAR-NEAT At Opposition (3.817 AU)
May 13 - Comet 316P/LONEOS-Christensen At Opposition (3.913 AU)
May 13 - Comet P/2015 Q1 (Scotti) At Opposition (4.063 AU)
May 13 - Asteroid 5720 Halweaver Closest Approach To Earth (1.367 AU)
May 14 - Comet C/2017 M4 (ATLAS) Closest Approach To Earth (2.481 AU)
May 14 - Comet 141P-D/Machholz At Opposition (3.731 AU)
May 14 - Comet C/2016 R2 (PANSTARRS) At Opposition (4.003 AU)
May 14 - Comet P/2008 QP20 (LINEAR-Hill) At Opposition (4.123 AU)
May 14 - 10th Anniversary (2009), Herschel/Planck Launch
May 14 - 70th Anniversary (1949), Comet 147P/Kushida-Muramatsu Captured Into Jupiter Orbit
May 14 - 155th Anniversary (1864), Orgueil Meteorite Shower in France
May 14 - Peder Horrebow's 340th Birthday (1679)
May 15 - Comet 183P/Korlevic-Juric Closest Approach To Earth (3.255 AU)
May 15 - Comet 141P-A/Machholz At Opposition (3.673 AU)
May 15 - Comet 141P/Machholz At Opposition (3.674 AU)
May 15 - Comet P/2004 R3 (LINEAR-NEAT) At Opposition (3.937 AU)
May 15 - Comet 265P/LINEAR At Opposition (4.082 AU)
May 15 - Asteroid 5261 Eureka Closest Approach To Earth (0.565 AU)
May 15 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.991 AU)
May 15 - Asteroid 9998 ISO Closest Approach To Earth (1.320 AU)
May 15 - Asteroid 67085 Oppenheimer Closest Approach To Earth (1.691 AU)
May 15 - Frank Culbertson's 70th Birthday (1949)
May 16 - 50th Anniversary (1969), Venera 5, Venus Impact
May 16 - Asteroid 15845 Bambi Closest Approach To Earth (1.550 AU)
May 16 - Asteroid 10637 Heimlich Closest Approach To Earth (2.181 AU)
May 16 - Kuiper Belt Object 65407 (2002 RP120) At Opposition (30.810 AU)
May 16 - Roy Kerr's 85th Birthday (1934)
May 17 - 50th Anniversary (1969), Venera 6, Venus Impact
May 17 - Comet 74P/Smirnova-Chernykh At Opposition (2.865 AU)
May 17 - Amor Asteroid 153591 (2001 SN263) (2 Moons) Closest Approach To Earth (1.268 AU)
May 17 - Asteroid 3263 Bligh Closest Approach To Earth (1.539 AU)
May 17 - Asteroid 20 Massalia Closest Approach To Earth (1.617 AU)
* May 17 - Asteroid 250840 Motorhead Closest Approach To Earth (2.481 AU)
* May 17 - Asteroid 325 Heidelberga Closest Approach To Earth (2.724 AU)
May 17 - Kuiper Belt Object 2015 BP519 At Opposition (52.674 AU)
May 17 - 20th Anniversary (1999), STS-96 Launch (Space Shuttle Discovery, International Space Station)
May 18 - Blue Moon
May 18 - Venus Passes 1.1 Degrees From Uranus
May 18 - 50th Anniversary (1969), Apollo 10 Launch
May 18 - Comet P/2003 T12 (SOHO) At Opposition (2.640 AU)
May 18 - Comet 206P/Barnard-Boattini At Opposition (3.671 AU)
May 18 - Apollo Asteroid 2012 KT12 Near-Earth Flyby (0.008 AU)
May 18 - Asteroid 12927 Pinocchio Closest Approach To Earth (1.581 AU)
May 18 - Asteroid 19148 Alaska Closest Approach To Earth (1.899 AU)
May 18 - Neptune Trojan 2010 TS191 At Opposition (29.665 AU)
May 19 - Moon Occults Dwarf Planet Ceres
May 19 - Comet P/2018 C1 (Lemmon-Read) At Opposition (3.077 AU)
May 19 - Comet 183P/Korlevic-Juric At Opposition (3.257 AU)
May 19 - Asteroid 9951 Tyrannosaurus Closest Approach To Earth (1.232 AU)
May 19 - Asteroid 2022 West Closest Approach To Earth (2.006 AU)
* May 19 - Asteroid 742 Edisona Closest Approach To Earth (2.114 AU)
May 19 - Kuiper Belt Object 2015 KH162 At Opposition (58.988 AU)
May 19 - 15th Anniversary (2004), Hayabusa (MUSES-C), Earth Flyby
May 19 - Dick Scobee's 80th Birthday (1939)
May 20 - Comet C/2017 M4 (ATLAS) At Opposition (2.489 AU)
May 20 - Comet P/2017 W3 (Gibbs) At Opposition (3.692 AU)
May 20 - Apollo Asteroid 68950 (2002 QF15) Near-Earth Flyby (0.088 AU)
May 20 - Apollo Asteroid 2017 QP16 Near-Earth Flyby (0.099 AU)
May 20 - Asteroid 736 Harvard Closest Approach To Earth (1.234 AU)
May 20 - Asteroid 4345 Rachmaninoff Closest Approach To Earth (1.948 AU)
May 21 - Dwarf Planet Ceres Occults UCAC5 363-073920 (11.5 Magnitude Star)
May 21 - Apollo Asteroid 217628 Lugh Closest Approach To Earth (1.388 AU)
May 21 - Asteroid 9618 Johncleese Closest Approach To Earth (1.451 AU)
May 21 - Asteroid 1197 Rhodesia Closest Approach To Earth (1.549 AU)
May 21 - Asteroid 171183 Haleakala Closest Approach To Earth (1.917 AU)
May 21 - C. Michelle Olmstead's 50th Birthday (1969)
May 22 - Moon Occults Saturn
May 22 - Comet 322P/SOHO At Opposition (1.128 AU)
May 22 - Comet 312P/NEAT Closest Approach To Earth (2.804 AU)
May 22 - Comet 16P/Brooks At Opposition (3.593 AU)
May 22 - Comet 158P/Kowal-LINEAR At Opposition (3.861 AU)
May 22 - Asteroid 9341 Gracekelly Closest Approach To Earth (1.523 AU)
May 22 - Asteroid 8256 Shenzhou Closest Approach To Earth (1.733 AU)
* May 22 - Asteroid 316201 Malala Closest Approach To Earth (2.743 AU)
May 22 - Peter Kusnirak's 45th Birthday (1974)
May 23 - Moon Occults Dwarf Planet Pluto
May 23 - Comet 158P/Kowal-LINEAR Closest Approach To Earth (3.861 AU)
May 23 - Apollo Asteroid 4179 Toutatis Closest Approach To Earth (2.978 AU)
May 23 - 115th Anniversary (1904), 1st Flight of Wright Brother's 2nd Plane (Flyer II)
May 24 - Comet P/2008 WZ96 (LINEAR) At Opposition (3.764 AU)
May 24 - Asteroid 2956 Yeomans Closest Approach To Earth (1.503 AU)
May 24 - Asteroid 172996 Stooke Closest Approach To Earth (1.612 AU)
May 24 - Asteroid 12104 Chesley Closest Approach To Earth (1.931 AU)
* May 24 - Asteroid 189202 Calar Alto Closest Approach To Earth (2.073 AU)
May 24 - Ivan Yarkovsky's 175th Birthday (1844)
May 24 - William Gilbert's 475th Birthday (1544)
May 25 - Towel Day - Annual Tribute to Douglas Adams
May 25 - Comet 363P/Lemmon Closest Approach To Earth (2.718 AU)
May 25 - Aten Asteroid 66391 (1999 KW4) Near-Earth Flyby (0.035 AU)
May 25 - Aten Asteroid 2015 KQ18 Near-Earth Flyby (0.027 AU)
May 25 - Igor Sikorsky's 130th Birthday (1889)
May 25 - John Tebbutt's 185th Birthday (1834)
May 26 - Comet P/2005 T2 (Christensen) Closest Approach To Earth (2.133 AU)
May 26 - Asteroid 342843 Davidbowie Closest Approach To Earth (1.841 AU)
May 26 - Otto Neugebauer's 120th Birthday (1899)
May 26 - Henri Farman's 145th Birthday (1874)
May 27 - Asteroid 116939 Jonstewart Closest Approach To Earth (1.033 AU)
May 27 - Dwarf Planet Ceres Closest Approach To Earth (1.751 AU)
May 27 - Asteroid 697 Galilea Closest Approach To Earth (1.964 AU)
May 28 - Comet P/2007 R2 (Gibbs) Closest Approach To Earth (2.937 AU)
* May 28 - Asteroid 9954 Brachiosaurus Closest Approach To Earth (2.110 AU)
May 28 - Plutino 2006 HJ123 At Opposition (32.782 AU)
May 28 - 60th Anniversary (1959), Jupiter C Launch Of Two Monkeys (Able & Baker)
May 28 - Milutin Milankovic's 140th Birthday (1879)
May 28 - Edward Charles Howard's 245th Birthday (1774)
May 29 - 100th Anniversary (1919), Solar Eclipse Confirms Einstein's General Theory Of Relativity
May 29 - Comet 306P/LINEAR Closest Approach To Earth (1.748 AU)
May 29 - Comet 3D/Biela At Opposition (2.381 AU)
May 29 - Aten Asteroid 2003 LH Near-Earth Flyby (0.040 AU)
May 29 - 45th Anniversary (1974), Luna 22 Launch (Soviet Moon Orbiter)
May 29 - Peter Higgs' 90th Birthday (1929)
May 30 - Moon Occults Asteroid 4 Vesta
May 30 - Comet 147P/Kushida-Muramatsu At Opposition (3.818 AU)
May 30 - Apollo Asteroid 2011 HP Near-Earth Flyby (0.031 AU)
May 30 - Asteroid 1631 Kopff Closest Approach To Earth (1.143 AU)
May 30 - Asteroid 6470 Aldrin Closest Approach To Earth (1.530 AU)
May 30 - Kuiper Belt Object 2010 JO179 At Opposition (58.249 AU)
May 30 - Ken Lawrence's 55th Birthday (1964)
May 30 - Claudia Alexander's 60th Birthday (1959)
May 30 - Alexey Leonov's 85th Birthday (1934)
May 31 - Comet 191P/McNaught At Opposition (3.202 AU)
May 31 - Comet 156P/Russell-LINEAR At Opposition (3.344 AU)
May 31 - Comet 108P/Ciffreo At Opposition (4.225 AU)
May 31 - Dwarf Planet Ceres Occults UCAC5 362-071809 (12.1 Magnitude Star)
May 31 - Asteroid 63163 Jerusalem Closest Approach To Earth (1.486 AU)
May 31 - Asteroid 301 Bavaria Closest Approach To Earth (1.543 AU)
May 31 - Asteroid 3001 Michelangelo Closest Approach To Earth (1.556 AU)
* May 31 - Asteroid 4327 Ries Closest Approach To Earth (1.629 AU)
* May 31 - Asteroid 24101 Cassini Closest Approach To Earth (2.496 AU)
May 31 - Plutino 38628 Huya At Opposition (27.684 AU)

June 2019
Jun ?? - CBERS 4A/Ziyuan 1E2 CZ-4B Launch
* Jun ?? - Uzlovoy Module (Progress M-UM) Soyuz-2.1b Launch
Jun 01 - Comet 230P/LINEAR At Opposition (4.278 AU)
Jun 01 - Asteroid 4923 Clarke Closest Approach To Earth (0.840 AU)
Jun 01 - Asteroid 3123 Dunham Closest Approach To Earth (1.472 AU)
Jun 01 - Neptune Trojan 2010 TT191 At Opposition (33.195 AU)
Jun 01 - Kuiper Belt Object 470308 (2007 JH43) At Opposition (39.548 AU)
* Jun 02 - Asteroid 1024 Hale Closest Approach To Earth (2.080 AU)
Jun 03 - Comet 202P/Scotti At Opposition (3.922 AU)
Jun 03 - Asteroid 2398 Jilin Closest Approach To Earth (1.860 AU)
Jun 03 - Asteroid 11908 Nicaragua Closest Approach To Earth (1.868 AU)
Jun 03 - Asteroid 1877 Marsden Closest Approach To Earth (2.402 AU)
Jun 03 - David Gregory's 360th Birthday (1659)
Jun 04 - Comet P/2003 T12 (SOHO) Closest Approach To Earth (2.596 AU)
Jun 04 - Comet 304P/Ory At Opposition (2.761 AU)
Jun 04 - Aten Asteroid 2014 JU15 Near-Earth Flyby (0.100 AU)
Jun 05 - Comet 222P/LINEAR Perihelion (0.828 AU)
Jun 05 - Comet P/2006 H1 (McNaught) At Opposition (1.882 AU)
* Jun 05 - Asteroid 4151 Alanhale Closest Approach To Earth (2.266 AU)
Jun 05 - John Couch Adams' 200th Birthday (1819)
Jun 06 - Aten Asteroid 2014 MF18 Near-Earth Flyby (0.022 AU)
Jun 06 - Asteroid 1217 Maximiliana Closest Approach To Earth (0.992 AU)
Jun 06 - Kuiper Belt Object 278361 (2007 JJ43) At Opposition (39.923 AU)
* Jun 07 - Comet C/2018 KJ3 (Lemmon) At Opposition (2.747 AU)
Jun 07 - Comet 113P/Spitaler At Opposition (4.177 AU)
Jun 07 - Apollo Asteroid 2017 BM93 Near-Earth Flyby (0.086 AU)
Jun 07 - Asteroid 13801 Kohlhase Closest Approach To Earth (1.685 AU)
Jun 07 - Asteroid 4169 Celsius Closest Approach To Earth (2.750 AU)
Jun 08 - World Oceans Day
Jun 08 - Asteroid 2322 Kitt Peak Closest Approach To Earth (1.339 AU)
Jun 08 - Asteroid 58671 Diplodocus Closest Approach To Earth (1.345 AU)
Jun 08 - Asteroid 5035 Swift Closest Approach To Earth (1.960 AU)
* Jun 08 - Asteroid 249521 Truth Closest Appproach To Earth (2.216 AU)
Jun 08 - Asteroid 1537 Transylvania Closest Approach To Earth (2.416 AU)
Jun 09 - Comet 363P/Lemmon At Opposition (2.752 AU)
Jun 09 - Comet 186P/Garradd Closest Approach To Earth (3.516 AU)
Jun 09 - Comet 186P/Garradd At Opposition (3.516 AU)
Jun 09 - Apollo Asteroid 2017 XY2 Near-Earth Flyby (0.074 AU)
Jun 09 - Asteroid 5392 Parker Closest Approach To Earth (1.523 AU)
Jun 09 - Asteroid 4628 Laplace Closest Approach To Earth (1.635 AU)
Jun 09 - Kuiper Belt Object 2010 KZ39 At Opposition (44.988 AU)
Jun 10 - Jupiter At Opposition
* Jun 10 - Asteroid 10916 Okina-Ouna Closest Approach To Earth (1.801 AU)
Jun 10 - 10th Anniversary (2009), Selene (Kaguya) Spacecraft Impacted the Moon (Japan)
Jun 10 - Richard Hill's 70th Birthday (1949)
Jun 10 - Jim McDivitt's 90th Birthday (1929)
Jun 10 - George Dollond's 245th Birthday (1774)
* Jun 11 - Comet C/2018 KJ3 (Lemmon) Closest Approach To Earth (2.742 AU)
* Jun 11 - Asteroid 9252 Goddard Closest Approach To Earth (2.046 AU)
* Jun 11 - Asteroid 6136 Gryphon Closest Approach To Earth (2.195 AU)
Jun 11 - 15th Anniversary (2004), Cassini, Phoebe Flyby
Jun 11 - 70th Anniversary (1949), Kunashak Meteorite Fall (Hit House in Russia)
Jun 11 - William Brook's 175th Birthday (1844)
Jun 11 - Asteroid 9387 Tweeddledee Closest Approach To Earth (1.166 AU)
Jun 12 - Comet 11P/Tempel-Swift-LINEAR At Opposition (3.156 AU)
Jun 12 - Dwarf Planet Ceres Occults UCAC5 360-074468 (12.1 Magnitude Star)
Jun 12 - Asteroid 2 Pallas Occults UCAC5 567-046961 (7.9 Magnitude Star)
Jun 12 - Apollo Asteroid 2011 TC4 Near-Earth Flyby (0.085 AU)
Jun 12 - Asteroid 6296 Cleveland Closest Approach To Earth (0.979 AU)
Jun 12 - Asteroid 249519 Whitneyclavin Closest Approach To Earth (1.441 AU)
Jun 12 - 15th Anniversary (2004), Ellerslie Meteorite Fall (Hit House in New Zealand)
Jun 12 - 30th Anniversary (1989), Opotiki Meteorite Fall (Hit Building in New Zealand)
Jun 13 - Comet 209P/LINEAR Perihelion (0.968 AU)
Jun 13 - Comet P/2006 S1 (Christensen) At Opposition (1.021 AU)
Jun 13 - Comet 235P/LINEAR Closest Approach To Earth (2.643 AU)
Jun 13 - Comet 201P/LONEOS At Opposition (3.964 AU)
Jun 13 - Asteroid 3043 San Diego Closest Approach To Earth (1.150 AU)
Jun 13 - Kuiper Belt Object 174567 Varda At Opposition (45.633 AU)
Jun 13 - Ann Druyan's 65th Birthday (1949)
Jun 14 - Comet 68P/Klemol At Opposition (1.330 AU)
Jun 14 - Comet 231P/LINEAR-NEAT Perihelion (3.022 AU)
Jun 14 - Dwarf Planet Ceres Occults TYC 6205-00960-1 (11.0 Magnitude Star)
Jun 14 - Apollo Asteroid 1866 Sisyphus Closest Approach To Earth (0.450 AU)
Jun 14 - Neptune Trojan 2013 KY18 At Opposition (28.905 AU)
Jun 14 - 25th Anniversary (1994), St. Robert Meteorite Fall (Hit House in Canada)
Jun 14 - 70th Anniversary (1949), V-2 Launch Carrying Albert II, the Rhesus Monkey
Jun 14 - Asteroid 7853 Confucius Closest Approach To Earth (1.992 AU)
Jun 14 - Nilakantha Somayaji's 575th Birthday (1444)
Jun 15 - STPSat-6 Atlas 5 Launch
Jun 15 - Moon Occults Dwarf Planet Ceres
Jun 16 - Comet P/2000 R2 (LINEAR) Perihelion (1.624 AU)
Jun 16 - Apollo Asteroid 2017 XZ1 Near-Earth Flyby (0.076 AU)
Jun 16 - Asteroid 3837 Carr Closest Approach To Earth (1.244 AU)
Jun 16 - Asteroid 1816 Liberia Closest Approach To Earth (1.735 AU)
Jun 16 - Asteroid 4252 Godwin Closest Approach To Earth (1.393 AU)
Jun 16 - Asteroid 25275 Jocelynbell Closest Approach To Earth (1.583 AU)
Jun 17 - Asteroid 3155 Lee Closest Approach To Earth (1.542 AU)
* Jun 17 - Asteroid 1801 Titicaca Closest Approach To Earth (2.215 AU)
* Jun 18 - Asteroid 305254 Moron CLosest Approach To Earth (2.000 AU)
Jun 18 - Asteroid 1001 Gaussia Closest Approach To Earth (2.478 AU)
Jun 18 - 10th Anniversary (2009), Lunar Reconnaissance Orbiter (LRO)/Lunar CRater Observation and Sensing Satellite (LCROSS) Launch
Jun 18 - 130th Anniversay (1889), Mighei Meteorite Fall in USSR
Jun 18 - William Lassell's 220th Birthday (1799)
Jun 19 - Moon Occults Saturn
Jun 19 - Moon Occults Dwarf Planet Pluto
Jun 19 - Mercury Passes 0.2 Degrees from Mars
Jun 19 - Comet P/1999 RO28 (LONEOS) Closest Approach To Earth (1.513 AU)
Jun 19 - Comet 261P/Larson Perihelion (2.013 AU)
Jun 19 - Aten Asteroid 2014 MV18 Near-Earth Flyby (0.078 AU)
Jun 19 - Aten Asteroid 2014 OL339 Closest Approach To Earth (0.293 AU)
Jun 19 - Plutino 28978 Ixion At Opposition (38.212 AU)
Jun 19 - 15th Anniversary (2004), Discovery of Asteroid 99942 Apophis
Jun 20 - Comet 304P/Ory Closest Approach TO Earth (2.722 AU)
Jun 20 - Comet 62P/Tsuchinshan At Opposition (3.441 AU)
Jun 20 - Binary Apollo Asteroid 69230 Hermes Closest Approach To Earth (1.308 AU)
* Jun 20 - Asteroid 397278 Arvidson Closest Approach To Earth (1.774 AU)
Jun 20 - Ilan Ramon's 65th Birthday (1954)
Jun 20 - John Paraskevopoulos' 130th Birthday (1889)
Jun 21 - Summer Solstice, 15:54 UT
Jun 21 - Comet 120P/Mueller At Opposition (3.383 AU)
Jun 21 - Comet 118P/Shoemaker-Levy At Opposition (3.942 AU)
Jun 21 - Comet P/2017 B4 (PANSTARRS) At Opposition (4.037 AU)
Jun 21 - Aten Asteroid 2010 RX30 Near-Earth Flyby (0.094 AU)
Jun 21 - Asteroid 274300 UNESCO Closest Approach To Earth (1.110 AU)
Jun 21 - Asteroid 5053 Chladni Closest Approach To Earth (1.495 AU)
Jun 21 - 15th Anniversary (2004), SpaceShipOne Launch (1st Private Manned Space Launch)
Jun 21 - Oleg Kononenko's 55th Birthtday (1964)
Jun 22 - Comet 255P/Levy At Opposition (3.920 AU)
Jun 22 - Apollo Asteroid 2016 WQ3 Near-Earth Flyby (0.079 AU)
* Jun 22 - Atira Asteroid 418265 (2008 EA32) Closest Approach To Earth (0.589 AU)
Jun 22 - Apollo Asteroid 11066 Sigurd Closest Approach To Earth (1.161 AU)
Jun 22 - Asteroid 2906 Caltech Closest Approach To Earth (2.253 AU)
Jun 23 - Mercury At Its Greatest Eastern Elongation (25 Degrees)
Jun 23 - Comet P/2006 H1 (McNaught) Closest Approach To Earth (1.842 AU)
Jun 23 - Comet 235P/LINEAR At Opposition (2.657 AU)
Jun 23 - Asteroid 44597 Thoreau Closest Approach To Earth (1.085 AU)
Jun 23 - Apollo Asteroid 2063 Bacchus Closest Approach To Earth (1.574 AU)
Jun 23 - Centaur Object 5145 Pholus At Opposition (27.282 AU)
Jun 23 - 10th Anniversary (2009), Lunar Reconnaissance Orbiter (LRO), Lunar Orbit Insertion
Jun 24 - Aten Asteroid 441987 (2010 NY65) Near-Earth Flyby (0.020 AU)
Jun 24 - Amor Asteroid 2011 HT Near-Earth Flyby (0.074 AU)
Jun 24 - Asteroid 7470 Jabberwock Closest Approach To Earth (1.187 AU)
* Jun 24 - Asteroid 3714 Kenrussell Closest Approach To Earth (1.913 AU)
Jun 24 - Asteroid 12432 Usuda Closest Approach To Earth (2.128 AU)
Jun 24 - Kuiper Belt Object 50000 Quaoar At Opposition (41.849 AU)
Jun 24 - 20th Anniversary (1999), Cassini, 2nd Venus Flyby
Jun 24 - 45th Anniversary (1974), Salyut 3 Launch (USSR Space Station)
Jun 24 - Carolyn Shoemaker's 90th Birthday (1929)
Jun 25 - Asteroid 3473 Sapporo Closest Approach To Earth (1.292 AU)
Jun 25 - Hermann Oberth's 125th Birthday (1894)
Jun 26 - Comet 322P/SOHO Closest Approach To Earth (0.913 AU)
Jun 26 - Comet 311P/PANSTARRS At Opposition (1.383 AU)
Jun 26 - Comet 30P/Reinmuth At Opposition (3.612 AU)
Jun 26 - Apollo Asteroid 4769 Castalia Closest Approach To Earth (1.511 AU)
* Jun 26 - Asteroid 9548 Fortran Closest Approach To Earth (1.949 AU)
Jun 26 - Lyman Spitzer's 105th Birthday (1914)
Jun 26 - William Thomson's 195th Birthday (1824)
Jun 27 - Comet 254P/McNaught At Opposition (2.991 AU)
Jun 27 - Aten Asteroid 2008 KV2 Near-Earth Flyby (0.045 AU)
* Jun 27 - Asteroid 132524 APL Closest Approach To Earth (1.012 AU)
* Jun 27 - Asteroid 3530 Hammel Closest Approach To Earth (1.117 AU)
Jun 27 - Asteroid 19695 Billnye Closest Approach To Earth (1.139 AU)
Jun 27 - Asteroid 7850 Buenos Aires Closest Approach To Earth (1.227 AU)
Jun 28 - Amor Asteroid 2016 NN15 Near-Earth Flyby (0.025 AU)
Jun 28 - Aten Asteroid 494999 (2010 JU39) Near-Earth Flyby (0.060 AU)
Jun 28 - Apollo Asteroid 2013 WR45 Near-Earth Flyby (0.092 AU)
* Jun 28 - Asteroid 716 Berkeley Closest Approach To Earth (1.724 AU)

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