Welcome to the Space Calendar!

Created in 1994, this Space Calendar covers space-related activities
and anniversaries for the upcoming year. It is also available on the
web at:

http://www.jpl.nasa.gov/calendar/

The online version of the Space Calendar includes over 5,300 links to related websites.

This calendar is compiled and maintained by Ron Baalke. Please send any updates or corrections to ron@jpl.nasa.gov. Note that launch dates
are subject to change at any time. Also, note that anniversary dates are listed in 5 year increments only.

The following people have contributed to this month's calendar:

o Thomas Schiller

Follow me on Twitter: https://twitter.com/RonBaalke


=========================
SPACE CALENDAR
April 22, 2018
=========================

* indicates changes from last month's calendar.

April 2018
Apr 22 - Earth Day
Apr 22 - Lyrids Meteor Shower Peak
Apr 22 - Tesla Roadster At Opposition (0.166 AU)
Apr 22 - Apollo Asteroid 2018 CY Near-Earth Flyby (0.097 AU)
Apr 22 - Asteroid 11246 Orvillewright Closest Approach To Earth (1.882 AU)
Apr 22 - Asteroid 2097 Galle Closest Approach To Earth (2.675 AU)
Apr 22 - Miguel Hurtado's 40th Birthday (1978)
Apr 23 - Comet 300P/Catalina Closest Approach To Earth (1.563 AU)
Apr 23 - Comet P/2012 O1 (McNaught) At Opposition (2.177 AU)
Apr 23 - Comet 147P/Kushida-Muramatsu At Opposition (3.301 AU)
* Apr 23 - Apollo Asteroid 2018 GG4 Near-Earth Flyby (0.025 AU)
Apr 23 - Aten Asteroid 2012 XL16 Near-Earth Flyby (0.041 AU)
Apr 23 - Aten Asteroid 2017 HF1 Near-Earth Flyby (0.061 AU)
Apr 23 - Apollo Asteroid 2015 XF352 Near-Earth Flyby (0.090 AU)
Apr 23 - Asteroid 400796 Douglass Closest Approach To Earth (1.803 AU)
Apr 23 - Asteroid 52301 Qumran Closest Approach To Earth (1.839 AU)
Apr 23 - Asteroid 6001 Thales Closest Approach To Earth (1.863 AU)
Apr 23 - Asteroid 5000 IAU Closest Approach To Earth (2.202 AU)
Apr 23 - Max Planck's 160th Birthday (1858)
Apr 24 - Moon Occults Regulus
Apr 24 - Asteroid 4 Vesta Occults 2UCAC 25156525 (12.5 Magnitude Star)
* Apr 24 - Amor Asteroid 2018 GD3 Near-Earth Flyby (0.064 AU)
* Apr 24 - Apollo Asteroid 2018 GF2 Near-Earth Flyby (0.070 AU)
Apr 24 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth (0.145 AU)
Apr 24 - Asteroid 7986 Romania Closest Approach To Earth (0.969 AU)
Apr 24 - Asteroid 232 Russia Closest Approach To Earth (1.113 AU)
Apr 24 - Asteroid 19367 Pink Floyd Closest Approach To Earth (1.842 AU)
Apr 24 - Kuiper Belt Object 42355 Typhon At Opposition (20.615 AU)
Apr 25 - Sentinel 3B Rokot-KM Launch
Apr 25 - Comet 169P/NEAT Closest Approach To Earth (1.604 AU)
Apr 25 - Comet 222P/LINEAR Closest Approach To Earth (2.885 AU)
Apr 25 - Comet 33P/Daniel At Opposition (3.393 AU)
Apr 25 - Comet P/2003 T12 (SOHO) At Opposition (3.582 AU)
Apr 25 - Comet C/2017 B3 (LINEAR) At Opposition (3.972 AU)
* Apr 25 - Apollo Asteroid 2018 GH Near-Earth Flyby (0.037 AU)
Apr 25 - Apollo Asteroid 2018 EY3 Near-Earth Flyby (0.088 AU)
Apr 25 - Apollo Asteroid 4581 Asciepius Closest Approach To Earth (0.293 AU)
Apr 25 - Asteroid 3350 Scobee Closest Approach To Earth (1.441 AU)
Apr 25 - Asteroid 17023 Abbott Closest Approach To Earth (1.446 AU)
Apr 25 - Asteroid 6123 Aristoteles Closest Approach To Earth (1.448 AU)
Apr 25 - Asteroid 268242 Pebble Closest Approach To Earth (1.497 AU)
Apr 25 - Asteroid 827 Wolfiana Closest Approach To Earth (1.586 AU)
Apr 25 - Asteroid 248750 Asteroidday Closest Approach To Earth (2.138 AU)
Apr 25 - Asteroid 21564 Widmanstatten Closest Approach To Earth (2.664 AU)
* Apr 26 - Zhuhai-1 03 & 04 CZ-11 Launch
Apr 26 - Comet 334P/NEAT Closest Approach To Earth (3.583 AU)
Apr 26 - Comet C/2017 E3 (PANSTARRS) Closest Approach To Earth (5.356 AU)
* Apr 26 - Aten Asteroid 2018 HP Near-Earth Flyby (0.030 AU)
Apr 26 - Amor Asteroid 450648 (2006 UC63) Near-Earth Flyby (0.082 AU)
Apr 26 - 20th Anniversary (1998), Cassini, Venus Flyby
Apr 26 - 25th Anniversary (1993), STS-55 Launch (Space Shuttle Columbia, Spacelab-D2)
Apr 26 - Anro Penzias' 85th Birthday (1933)
Apr 26 - 170th Anniversary (1848), Andrew Graham's Discovery of Asteroid 9 Metis
Apr 26 - 215th Anniversary (1803), L'Aigle Meteorite Shower (Hit House in France)
Apr 27 - Comet P/2011 CR42 (Catalina) At Opposition (1.539 AU)
Apr 27 - Comet 313P/Gibbs At Opposition (2.713 AU)
* Apr 27 - Apollo Asteroid 2018 GH5 Near-Earth Flyby (0.031 AU)
* Apr 27 - Apollo Asteroid 2018 GB2 Near-Earth Flyby (0.044 AU)
Apr 27 - Apollo Asteroid 444193 (2005 SE71) Near-Earth Flyby (0.062 AU)
Apr 27 - Amor Asteroid 194126 (2001 SG276) Near-Earth Flyby (0.084 AU)
Apr 27 - Apollo Asteroid 5786 Talos Closest Approach To Earth (0.792 AU)
Apr 27 - Asteroid 3773 Smithsonian Closest Approach To Earth (1.423 AU)
Apr 27 - Asteroid 8146 Jimbell Closest Approach To Earth (1.955 AU)
Apr 27 - Philip Abelson's 105th Birthday (1913)
Apr 28 - Moon Occults Asteroid 21 Lutetia
Apr 28 - Comet P/2017 B4 (PANSTARRS) Closest Approach To Earth (2.914 AU)
Apr 28 - Comet 202P/Scotti At Opposition (3.199 AU)
Apr 28 - Comet 191P/McNaught At Opposition (3.968 AU)
Apr 28 - Comet P/2008 WZ96 (LINEAR) At Opposition (4.122 AU)
* Apr 28 - Amor Asteroid 2018 GO2 Near-Earth Flyby (0.061 AU)
Apr 28 - Asteroid 1818 Brahms Closest Approach To Earth (1.252 AU)
Apr 28 - Asteroid 16481 Thames Closest Approach To Earth (2.135 AU)
Apr 28 - 15th Anniversary (2003), Galaxy Evolution Explorer (GALEX) Launch
Apr 28 - Eugene Shoemaker's 90th Birthday (1928)
Apr 28 - Eberhard Rees' 110th Birthday (1908)
Apr 29 - Mercury At Its Greatest Western Elongation (27 Degrees)
Apr 29 - Comet 45P/Honda-Mrkos-Pajdusakov At Oppositon (3.554 AU)
Apr 29 - Comet P/2017 D4 (PANSTARRS) At Opposition (4.139 AU)
Apr 29 - Apollo Asteroid 2013 US3 Near-Earth Flyby (0.026 AU)
Apr 29 - Aten Asteroid 2002 JR100 Near-Earth Flyby (0.028 AU)
* Apr 29 - Apollo Asteroid 2018 GO4 Near-Earth Flyby (0.030 AU)
* Apr 29 - Apollo Asteroid 2018 GY1 Near-Earth Flyby (0.034 AU)
* Apr 29 - Amor Asteroid 2018 FV4 Near-Earth Flyby (0.045 AU)
Apr 29 - Asteroid 4659 Roddenberry Closest Approach To Earth (1.878 AU)
Apr 29 - Asteroid 4749 Ledzepplin Closest Approach To Earth (2.315 AU)
Apr 29 - Asteroid 5870 Baltimore Closest Approach To Earth (2.948 AU)
* Apr 29 - Kuiper Belt Object 2014 FC69 At Opposition (83.748 AU)
Apr 29 - Nikolai Budarin's 65th Birthday (1953)
Apr 29 - Harold Urey's 125th Birthday (1893)
Apr 30 - Moon Occults Asteroid 16 Psyche
Apr 30 - Comet 169P/NEAT Perihelion (0.604 AU)
Apr 30 - Comet C/2017 K1 (PANSTARRS) Closest Approach To Earth (6.259 AU)
Apr 30 - Comet C/2017 K1 (PANSTARRS) At Opposition (6.259 AU)
Apr 30 - Comet C/2015 XY1 (Lemmon) Perihelion (7.928 AU)
Apr 30 - Asteroid 42981 Jenniskens Closest Approach To Earth (1.176 AU)
Apr 30 - Asteroid 2700 Baikonur Closest Approach To Earth (1.981 AU)
Apr 30 - Asteroid 2801 Huygens Closest Approach To Earth (2.082 AU)

May 2018
May ?? - Moon Express (MX-1E-1) Electron Launch
May ?? - GPS 3A-2 Falcon 9 Launch
May ?? - GEO-KOMPSAT-2A Ariane 5 Launch
May ?? - IRNSS-1I PSLV-XL Launch
May ?? - BeiDou-3 (M9 & M10) CZ-3C/YZ-1 Launch
May ?? - GLONASS-M 759 Soyuz-2.1b/Fregat-M Launch
* May ?? - CICERO/Outernet 1/Lemur-2 Electron Launch
May ?? - Edward Cooper's 220th Birthday (1798)
May 01 - Comet P/2011 CR42 (Catalina) Closest Approach To Earth (1.537 AU)
May 01 - Comet 330P/Catalina At Opposition (4.022 AU)
May 01 - Amor Asteroid 2018 DX3 Near-Earth Flyby (0.081 AU)
May 01 - Asteroid 4330 Vivaldi Closest Approach To Earth (1.318 AU)
May 01 - Asteroid 51828 Ilanramon Closest Approach To Earth (2.011 AU)
May 01 - Asteroid 13688 Oklahoma Closest Approach To Earth (2.134 AU)
May 01 - 20th Anniversary (1998), Discovery of Dar al Gani 476 Meteorite in Sahara Desert (Mars Meteorite)
* May 02 - Gaofen 5 (GF 5) CZ-4C Launch
May 02 - Comet 169P/NEAT At Opposition (1.609 AU)
May 02 - Comet 334P/NEAT At Opposition (3.588 AU)
May 02 - Asteroid 9885 Linux Closest Approach To Earth (1.447 AU)
May 02 - Asteroid 4047 Chang'E Closest Approach To Earth (1.852 AU)
May 02 - Asteroid 5471 Tunguska Closest Approach To Earth (1.880 AU)
May 02 - Asteroid 16626 Thumper Closest Approach To Earth (1.928 AU)
May 02 - Asteroid 2099 Opik Closest Approach To Earth (2.044 AU)
May 02 - Asteroid 9860 Archaeopteryx Closest Approach To Earth (2.146 AU)
May 02 - Kuiper Belt Object 2010 EK139 At Opposition (35.418 AU)
May 02 - Robert Wood's 150th Birthday (1868)
May 03 - Comet 313P/Gibbs Closest Approach To Earth (2.708 AU)
May 03 - Comet C/2017 E3 (PANSTARRS) At Opposition (5.365 AU)
May 03 - Amor Asteroid 2015 JP Near-Earth Flyby (0.097 AU)
May 03 - Asteroid 10866 Peru Closest Approach To Earth (1.193 AU)
May 03 - Asteroid 4122 Ferrari Closest Approach To Earth (1.442 AU)
May 03 - Asteroid 9134 Encke Closest Approach To Earth (1.909 AU)
May 03 - Asteroid 3325 TARDIS Closest Approach To Earth (2.177 AU)
May 03 - Asteroid 13677 Alvin Closest Approach To Earth (2.373 AU)
May 03 - Asteroid 13897 Vesuvius Closest Approach To Earth (2.960 AU)
May 03 - Steven Weinberg's 85th Birthday (1933)
May 03 - Ernst Hartwig's 95th Birthday (1923)
May 04 - Space Day
May 04 - Star Wars Day
* May 04 - Bangabandhu-1 Falcon 9 Launch
May 04 - Comet 37P/Forbes Perihelion (1.610 AU)
May 04 - Comet 30P/Reinmuth At Opposition (1.816 AU)
May 04 - Apollo Asteroid 2017 WY14 Near-Earth Flyby (0.052 AU)
* May 04 - Apollo Asteroid 2012 SR56 Near-Earth Flyby (0.064 AU)
* May 04 - Apollo Asteroid 2018 HC Near-Earth Flyby (0.076 AU)
May 04 - Asteroid 17898 Scottsheppard Closest Approach To Earth (1.101 AU)
May 04 - Jean-Charles de Borda's 285th Birthday (1733)
May 04 - Jean-Philippe de Cheseaux's 300th Birthday (1718)
May 05 - InSight/Mars Cube One 1 & 2 Atlas 5 Launch (Mars Lander)
May 05 - National Astronaut Day
May 05 - Eta Aquarids Meteor Shower Peak
* May 05 - Amor Asteroid 2018 GW Near-Earth Flyby (0.056 AU)
May 05 - Asteroid 8299 Tealeoni Closest Approach To Earth (0.956 AU)
May 05 - Asteroid 9342 Carygrant Closest Approach To Earth (1.568 AU)
May 05 - Asteroid 12846 Fullerton Closest Approach To Earth (2.095 AU)
May 05 - Albert Marth's 190th Birthday (1828)
* May 06 - Apstar 6C CZ-3B/E Launch
May 06 - Comet 107P/Wilson-Harrington Closest Approach To Earth (1.688 AU)
May 06 - Comet 304P/Ory At Opposition (3.926 AU)
May 06 - Apollo Asteroid 1685 Toro Closest Approach To Earth (0.972 AU)
May 06 - Asteroid 8283 Edinburgh Closest Approach To Earth (2.037 AU)
May 06 - Asteroid 2476 Andersen Closest Approach To Earth (2.210 AU)
May 06 - Carl Hergenrother's 45th Birthday (1973)
May 06 - Grove Gilbert's 175th Birthday (1843)
May 07 - Comet 143P/Kowal-Mrkos Perihelion (2.532 AU)
May 07 - Comet P/2000 R2 (LINEAR) Closest Approach To Earth (2.591 AU)
May 07 - Comet 350P/McNaught Closest Approach To Earth (2.753 AU)
May 07 - Comet 350P/McNaught At Opposition (2.753 AU)
May 07 - Comet C/2016 S1 (PANSTARRS) At Opposition (3.266 AU)
May 07 - Comet C/2017 A1 (PANSTARRS) At Opposition (3.787 AU)
May 07 - Apollo Asteroid 1999 FN19 Near-Earth Flyby (0.025 AU)
* May 07 - Apollo Asteroid 2018 GX Near-Earth Flyby (0.065 AU)
May 07 - Asteroid 4433 Goldstone Closest Approach To Earth (1.499 AU)
May 07 - Apollo Asteroid 11311 Peleus Closest Approach To Earth (1.742 AU)
May 07 - Kuiper Belt Object 2010 FX86 At Opposition (45.160 AU)
May 08 - Comet 253P/PANSTARRS Perihelion (2.037 AU)
May 08 - Comet 254P/McNaught At Opposition (4.181 AU)
May 08 - Asteroid 21 Lutetia Occults TYC 4950-00415-1 (11.7 Magnitude Star)
May 08 - Apollo Asteroid 2016 JQ5 Near-Earth Flyby (0.016 AU)
May 08 - Asteroid 2709 Sagan Closest Approach To Earth (1.063 AU)
May 08 - Asteroid 16857 Goodall Closest Approach To Earth (1.622 AU)
May 08 - Apollo Asteroid 3103 Eger Closest Approach To Earth (1.753 AU)
May 08 - Centaur Object 144908 (2004 YH32) At Opposition (11.685 AU)
May 09 - Jupiter At Opposition
May 09 - Comet C/2016 R2 (PANSTARRS) Perihelion (2.602 AU)
May 09 - Comet 348P/PANSTARRS Closest Approach To Earth (2.870 AU)
May 09 - Comet P/1999 RO28 (LONEOS) At Opposition (2.929 AU)
May 09 - Apollo Asteroid 388945 (2008 TZ3) Near-Earth Flyby (0.017 AU)
May 09 - Asteroid 12397 Peterbrown Closest Approach To Earth (1.953 AU)
May 09 - Asteroid 12760 Maxwell Closest Approach To Earth (2.139 AU)
May 09 - 15th Anniversary (2003), Hayabusa Launch (Japan Asteroid Sample Return Mission)
May 10 - Comet P/2017 B4 (PANSTARRS) At Opposition (2.933 AU)
May 10 - Comet 260P/McNaught At Opposition (3.169 AU)
May 10 - Comet 230P/LINEAR At Opposition (4.175 AU)
May 10 - Asteroid 243 Ida Occults TYC 6810-00664-1 (9.9 Magnitude Star)
May 10 - Asteroid 19155 Lifeson Closest Approach To Earth (2.026 AU)
May 10 - Asteroid 9357 Venezuela Closest Approach To Earth (2.102 AU)
May 10 - Asteroid 1501 Baade Closest Appraoch To Earth (2.115 AU)
May 10 - Kuiper Belt Object 90568 (2004 GV9) At Opposition (38.560 AU)
May 10 - Augustin-Jean Frensel's 230th Birthday (1788)
May 11 - Comet 255P/Levy Closest Approach To Earth (2.658 AU)
* May 11 - Apollo Asteroid 2018 GR2 Near-Earth Flyby (0.034 AU)
May 11 - Richard Feynman's 100th Birthday (1918)
May 12 - Mercury Passes 2.4 Degrees From Uranus
May 12 - Comet 168P/Hergenrother At Opposition (3.043 AU)
May 12 - Comet 322P/SOHO At Opposition (3.605 AU)
May 12 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.937 AU)
May 12 - Asteroid 128523 Johnmuir Closest Approach To Earth (1.775 AU)
May 12 - John Hind's 195th Birthday (1823)
May 13 - Asteroid 2874 Jim Young Closest Approach To Earth (1.532 AU)
May 13 - Asteroid 15495 Bogie Closest Approach To Earth (2.119 AU)
May 13 - Alexis-Claude Clairaut's 305th Birthday (1713)
May 14 - Comet 227P/Catalina-LINEAR Closest Approach To Earth (2.152 AU)
May 14 - Comet 348P/PANSTARRS At Opposition (2.874 AU)
May 14 - Comet 113P/Spitaler At Opposition (4.203 AU)
May 14 - Asteroid 6336 Dodo Closest Approach To Earth (1.675 AU)
May 14 - Asteroid 16 Psyche Closest Approach To Earth (2.2388888888 AU)
May 14 - Asteroid 4255 Spacewatch Closest Approach To Earth (2.422 AU)
May 14 - Asteroid 580 Selene Closest Approach To Earth (2.474 AU)
May 14 - 45th Anniversary (1973), Skylab Launch
May 15 - Comet P/2012 O1 (McNaught) Closest Approach To Earth (2.111 AU)
May 15 - Comet C/2013 C2 (Tenagra) Closest Approach To Earth (8.818 AU)
May 15 - Aten Asteroid 1999 LK1 Near-Earth Flyby (0.034 AU)
May 15 - Apollo Asteroid 101955 Bennu Closest Approach To Earth (0.352 AU)
May 15 - Asteroid 42998 Malinafrank Closest Approach To Earth (1.226 AU)
May 15 - Asteroid 2045 Peking Closest Approach To Earth (1.255 AU)
May 15 - Asteroid 4017 Disneya Closest Approach To Earth (1.665 AU)
May 15 - Asteroid 90388 Philchristensen Closest Approach To Earth (1.719 AU)
May 15 - Asteroid 203 Pompeja Closest Approach To Earth (1.888 AU)
May 15 - Asteroid 5281 Lindstrom Closest Approach To Earth (2.322 AU)
May 15 - Neptune Trojan 2010 TS191 At Opposition (29.677 AU)
May 15 - 55th Anniversary (1963), Mercury 9 Launch (Gordon Cooper)
May 15 - Nicolas-Louis de Lacaille's 305th Birthtday (1713)
May 16 - Moon Occults Aldebaran
May 16 - Comet C/2017 T1 (Heinze) Closest Approach To Earth (1.302 AU)
May 16 - Comet 331P/Gibbs At Opposition (2.113 AU)
May 16 - Comet 240P/NEAT Perihelion (2.134 AU)
May 16 - Comet 43P/Wolf-Harrington At Opposition (3.589 AU)
May 16 - Apollo Asteroid 2015 KJ19 Near-Earth Flyby (0.061 AU)
May 16 - Apollo Asteroid 2012 WS3 Near-Earth Flyby (0.095 AU)
May 16 - Atira Asteroid 2013 JX28 Closest Approach To Earth (0.870 AU)
May 16 - Asteroid 5535 Annefrank Closest Approach To Earth (1.237 AU)
May 16 - Kuiper Belt Object 65407 (2002 RP120) At Opposition (29.547 AU)
May 17 - Comet 263P/Gibbs Closest Approach To Earth (1.658 AU)
May 17 - Comet 331P/Gibbs Closest Approach To Earth (2.113 AU)
May 17 - Comet 11P/Tempel-Swift-LINEAR At Opposition (4.129 AU)
* May 17 - Amor Asteroid 2018 GL1 Near-Earth Flyby (0.036 AU)
May 17 - Asteroid 70713 Sethmacfarlane Closest Approach To Earth (1.655 AU)
May 17 - Asteroid 78453 Bullock Closest Approach To Earth (2.052 AU)
May 17 - Asteroid 439 Ohio Closest Approach To Earth (2.329 AU)
May 18 - Comet 66P/du Toit Closest Approach To Earth (0.896 AU)
* May 18 - Comet P/2018 A4 (PANSTARRS) Perihelion (2.403 AU)
May 18 - Comet P/2000 S4 (LINEAR-Spacewatch) At Opposition (3.748 AU)
May 18 - Asteroid 7749 Jackschmitt Closest Approach To Earth (1.833 AU)
May 18 - Kuiper Belt Object 2015 KH162 At Opposition (58.714 AU)
May 18 - 30th Anniversary (1988), Torino Meteorite Fall (Hit Building in Italy)
May 18 - 65th Anniveray (1953), Jacqueline Cochran Becomes 1st Woman to Break Sound Barrier
May 18 - Richard Tousey's 110th Birthday (1908)
May 18 - Omar Khayyam's 970th Birthday (1048)
* May 19 - Iridium Next 51-55/GRACE-FO 1 & 2 Falcon 9 Launch
May 19 - Comet 66P/du Toit Perihelion (1.290 AU)
May 19 - Comet P/2010 H2 (Vales) Closest Approach To Earth (2.256 AU)
May 19 - Comet P/2014 U2 (Kowalski) At Opposition (3.028 AU)
May 19 - Comet 120P/Mueller At Opposition (4.235 AU)
May 19 - Comet C/2013 C2 (Tenagra) At Opposition (8.820 AU)
May 19 - Asteroid 128036 Rafaelnadal Closest Approach To Earth (0.885 AU)
May 19 - Asteroid 6469 Armstrong Closest Approach To Earth (1.055 AU)
May 19 - Asteroid 4221 Picasso Closest Approach To Earth (1.331 AU)
May 19 - Asteroid 224693 Morganfreeman Closest Approach To Earth (1.820 AU)
May 19 - Asteroid 2104 Toronto Closest Approach To Earth (1.931 AU)
May 19 - Asteroid 10377 Kilimanjaro Closest Approach To Earth (2.630 AU)
May 19 - John Hayford's 150th Birthday (1868)
* May 20 - Cygnus CRS-9 (OA-9)/CubeRRT/HaloSat/RainCube/SORTIE/TEMPEST-D/CaNOP/
RadSat-g/EQUiSat/MemSat/EnduroSat One Antares 230 Launch (International Space Station)
May 20 - Comet 118P/Shoemaker-Levy At Opposition (3.363 AU)
May 20 - Comet 84P/Giclas At Opposition (3.775 AU)
May 20 - Apollo Asteroid 24761 Ahau Closest Approach To Earth (0.867 AU)
May 20 - Asteroid 15318 Innsbrook Closest Approach To Earth (1.155 AU)
May 20 - Asteroid 472 Roma Closest Approach To Earth (1.822 AU)
May 20 - Asteroid 3623 Chaplin Closest Approach To Earth (1.937 AU)
May 20 - Asteroid 8657 Cedrus Closest Approach To Earth (2.026 AU)
May 20 - 30th Anniversary (1978), Pioneer Venus 1 Launch
* May 21 - Chang'e 4 Relay/DSLWP-A1 & A2 CZ-4C Launch (L2 Halo Orbit Mission)
* May 21 - Asteroid 4 Vesta Occults 2UCAC 2491645 (6.0 Magnitude Star)
May 21 - Centaur Object 10199 Chariklo Occults 2UCAC 20274656 (14.4 Magnitude Star)
May 21 - Asteroid 4104 Alu Closest Approach To Earth (1.368 AU)
May 21 - Asteroid 8734 Warner Closest Approach To Earth (1.978 AU)
May 21 - Glenn Curtiss' 140th Birthday (1878)
May 22 - Mars Autumnal Equinox
May 22 - Comet 215P/NEAT At Opposition (3.056 AU)
May 22 - Asteroid 9949 Brontosaurus Closest Approach To Earth (1.230 AU)
May 22 - Asteroid 16682 Donati Closest Approach To Earth (1.326 AU)
May 22 - Asteroid 1541 Estonia Closest Approach To Earth (1.625 AU)
May 22 - David Levy's 70th Birthday (1948)
May 22 - 110th Anniversary (1808), Stannern Meteorite Fall in Czechoslovakia
May 23 - Comet 24P/Schaumasse At Opposition (1.453 AU)
* May 23 - Comet C/2018 EF9 (Lemmon) Perihelion (1.556 AU)
May 23 - Comet P/2010 H2 (Vales) At Opposition (2.259 AU)
May 23 - Comet 159P/LONEOS Perihelion (3.625 AU)
May 23 - Comet 104P/Kowal At Opposition (4.057 AU)
May 23 - Apollo Asteroid 2016 WL7 Near-Earth Flyby (0.080 AU)
May 23 - Asteroid 1284 Latvia Closest Approach To Earth (2.107 AU)
May 23 - Thomas Reiter's 60th Birthday (1958)
* May 24 - SES-12 Falcon 9 Launch
May 24 - Comet 107P/Wilson-Harrington Perihelion (0.970 AU)
* May 24 - Comet C/2018 C2 (Lemmon) Closest Approach To Earth (1.201 AU)
May 24 - Asteroid 4 Vesta Occults UCAC4-359-131702 (12.4 Magnitude Star)
* May 24 - Apollo Asteroid 2018 FS3 Near-Earth Flyby (0.074 AU)
May 24 - Asteroid 337044 Bobdylan Closest Approach To Earth (1.468 AU)
May 24 - Asteroid 30444 Shemp Closest Approach To Earth (1.848 AU)
May 25 - Towel Day - Annual Tribute to Douglas Adams
* May 25 - GSAT 11/Azerspace 2 (Intelsat 38) Ariane 5 Launch
May 25 - Comet 5D/Brorsen Closest Approach To Earth (2.295 AU)
May 25 - Comet P/2012 SB6 (Lemmon) At Opposition (3.601 AU)
May 25 - Comet P/2011 U2 (Bressi) At Opposition (4.583 AU)
May 25 - Asteroid 17059 Elvis Closest Approach To Earth (1.555 AU)
May 25 - Asteroid 2169 Taiwan Closest Approach To Earth (1.912 AU)
May 25 - Asteroid 157064 Sedona Closest Approach To Earth (2.108 AU)
May 25 - 10th Anniversary (2008), Phoenix, Mars Landing
May 26 - Comet 234P/LINEAR Closest Approach To Earth (2.354 AU)
May 26 - Comet 187P/LINEAR Closest Approach To Earth (2.888 AU)
May 26 - Comet 187P/LINEAR At Opposition (2.888 AU)
May 26 - Comet P/2011 U2 (Bressi) Closest Approach To Earth (4.583 AU)
May 26 - Apollo Asteroid 2017 LF Near-Earth Flyby (0.085 AU)
May 26 - Asteroid 5738 Billpickering Closest Approach To Earth (2.120 AU)
May 26 - Plutino 2006 HJ123 At Opposition (33.096 AU)
May 27 - Moon Occults Asteroid 16 Psyche
May 27 - Comet 255P/Levy At Opposition (2.698 AU)
May 27 - Comet P/2017 G2 (PANSTARRS) Closest Approach To Earth (2.954 AU)
May 27 - Comet 315P/LONEOS At Opposition (3.368 AU)
May 27 - Comet 187P/LINEAR Perihelion (3.881 AU)
May 27 - Aten Asteroid 66391 (1999 KW4) Near-Earth Flyby (0.078 AU)
May 27 - Atira Asteroid 481817 (2008 UL90) Closest Approach To Earth (0.580 AU)
May 27 - Asteroid 11335 Santiago Closest Approach To Earth (1.457 AU)
May 27 - Asteroid 2197 Shanghai Closest Approach To Earth (2.306 AU)
May 27 - Plutino 38628 Huya At Opposition (27.633 AU)
May 27 - Alexander Volkov's 70th Birthday (1948)
May 28 - Comet P/1999 RO28 (LONEOS) Closest Approach To Earth (2.877 AU)
May 28 - Comet C/2015 VL62 Closest Approach To Earth (2.895 AU)
May 28 - Comet 215P/NEAT Closest Approach To Earth (3.051 AU)
May 28 - Comet 157P/Tritton At Opposition (3.884 AU)
May 28 - Asteroid 4 Vesta Occults TYC 6268-00905-1 (10.3 Magnitude Star)
May 28 - Amor Asteroid 2018 ER4 Near-Earth Flyby (0.064 AU)
May 28 - Asteroid 17744 Jodiefoster Closest Approach To Earth (1.379 AU)
May 28 - Asteroid 6117 Brevardastro Closest Approach To Earth (1.480 AU)
May 28 - Asteroid 6714 Montreal Closest Approach To Earth (1.657 AU)
May 28 - Asteroid 4099 Wiggins Closest Approach To Earth (1.805 AU)
May 28 - Asteroid 3780 Maury Closest Approach To Earth (1.827 AU)
May 28 - Asteroid 2044 Wirt Closest Approach To Earth (1.998 AU)
May 28 - Asteroid 1042 Amazone Closest Approach To Earth (2.279 AU)
May 29 - Comet 357P/Hill Perihelion (2.527 AU)
May 29 - Aten Asteroid 68347 (2001 KB67) Near-Earth Flyby (0.024 AU)
May 29 - Apollo Asteroid 2014 WG365 Near-Earth Flyby (0.061 AU)
May 29 - Asteroid 3131 Mason-Dixon Closest Approach To Earth (1.835 AU)
May 29 - Kuiper Belt Object 2010 JO179 At Opposition (57.435 AU)
May 30 - Comet C/2017 B3 (LINEAR) Closest Approach To Earth (3.873 AU)
May 30 - Comet 144P/Kushida At Opposition (3.888 AU)
May 30 - Asteroid 4 Vesta Occults UCAC4-358-128730 (12.2 Magnitude Star)
* May 30 - Centaur Object 10199 Chariklo Occults 2UCAC 20036612 (14.9 Magnitude Star)
May 30 - Asteroid 12325 Bogota Closest Approach To Earth (1.354 AU)
May 30 - Neptune Trojan 2010 TT191 At Opposition (33.184 AU)
May 30 - Michael Lopez-Alegria's 60th Birthday (1958)
May 30 - Hannes Alfven's 100th Birthday (1908)
May 30 - Raymond Dugan's 140th Birthday (1878)
* May 31 - BlackSky Global 1 PSLV Launch
May 31 - Comet 164P/Christensen Perihelion (1.685 AU)
May 31 - Comet 227P/Catalina-LINEAR At Opposition (2.195 AU)
May 31 - Asteroid 4 Vesta Occults TYC 6268-00025-1 (10.7 Magnitude Star)
May 31 - Asteroid 4 Vesta Occults TYC 6268-00036-1 (11.0 Magnitude Star)
May 31 - Amor Asteroid 2013 LE7 Near-Earth Flyby (0.046 AU)
May 31 - Aten Asteroid 5381 Sekmet Closest Approach To Earth (1.081 AU)
May 31 - Asteroid 13599 Lisbon Closest Approach To Earth (1.901 AU)
May 31 - Asteroid 24102 Jacquecassini Closest Approach To Earth (1.916 AU)
May 31 - Asteroid 589 Croatia Closest Approach To Earth (2.255 AU)
May 31 - Kuiper Belt Object 2007 JH43 At Opposition (39.551 AU)
May 31 - 10th Anniversary (2008), STS-124 Launch (Space Shuttle Discovery, International Space Station)
May 31 - 20th Anniversary (1998), Galileo, Europa 15 Flyby

June 2018
Jun ?? - DSX/FORMOSAT 7A-77F/GPIM/OTB/FalconSat 6/NPSat 1/Oculus-ASR/Prox 1/LightSail-B/
Nanosat 7/SSTE 4/SET 1/ARMADILLO/Falconsat 7 (Peregrinne)/TBEx A & B/Prometheus 2-1 - 2-8/
TEPCE 1 & 2/CP 9 StangSat Falcon Launch
* Jun ?? - Pakistan Remote Sensing Satellite (PRSS-1)/PakTES 1 CZ-2C/SMA Launch * Jun ?? - GSAT-29 GSLV Mk III Launch
* Jun ?? - Telstar 19V Falcon 9 Launch
Jun 01 - Comet 168P/Hergenrother Closest Approach To Earth (2.988 AU)
Jun 01 - Asteroid 4 Vesta Occults 2UCAC 24660991 (12.1 Magnitude Star)
Jun 01 - Asteroid 8837 London Closest Approach To Earth (0.983 AU)
Jun 01 - Asteroid 61342 Lovejoy Closest Approach To Earth (1.165 AU)
Jun 01 - Asteroid 5891 Gehrig Closest Approach To Earth (1.727 AU)
Jun 01 - Georgy Dobrovolsky's 90th birthday (1928)
Jun 01 - Geminiano Montanari's 385th Birthday (1633)
* Jun 02 - Comet C/2018 C2 (Lemmon) Perihelion (1.957 AU)
Jun 02 - Comet 261P/Larson At Opposition (2.265 AU)
Jun 02 - Comet 178P/Hug-Bell At Opposition (3.780 AU)
Jun 02 - Comet C/2017 M5 (TOTAS) Perihelion (5.990 AU)
Jun 02 - Apollo Asteroid 2016 XF Near-Earth Flyby (0.077 AU)
Jun 02 - Asteroid 16421 Roadrunner Closest Approach To Earth (0.981 AU)
Jun 02 - Asteroid 5860 Deankootz Closest Approach To Earth (1.830 AU)
Jun 02 - Asteroid 243 Ida Closest Approach To Earth (1.969 AU)
Jun 02 - Asteroid 2191 Uppsala Closest Approach To Earth (2.259 AU)
Jun 02 - 15th Anniversary (2003), Mars Express/ Beagle 2 Launch
Jun 02 - 20th Anniversary (1998), STS-91 Launch (Space Shuttle Discovery, Mir Space Station)
Jun 02 - 35th Anniversary (1983), Venera 15 Launch (USSR Venus Orbiter)
Jun 02 - 160th Anniversary (1858), Discovery of Donati's Comet
Jun 03 - Soyuz MS-7 Return to Earth (International Space Station)
Jun 03 - Comet P/2015 X6 (PANSTARRS) Closest Approach To Earth (2.212 AU)
Jun 03 - Comet P/2015 X6 (PANSTARRS) At Opposition (2.212 AU)
Jun 03 - Comet 234P/LINEAR At Opposition (2.362 AU
Jun 03 - Comet 96P/Machholz Closest Approach To Earth (2.397 AU)
Jun 03 - 5th Anniversary (2013), Discovery of Rings Around Chariklo
Jun 04 - Asteroid 16035 Sasandford Closest Approach To Earth (1.591 AU)
Jun 04 - Asteroid 2825 Crosby Closest Approach To Earth (1.594 AU)
Jun 04 - Asteroid 17656 Hayabusa Closest Approach To Earth (1.690 AU)
Jun 04 - Apollo Asteroid 4257 Ubasti Closest Approach To Earth (1.751 AU)
Jun 04 - Asteroid 10189 Normanrockwell Closest Approach To Earth (1.797 AU)
Jun 04 - Asteroid 5102 Benfranklin Closest Approach To Earth (2.013 AU)
Jun 04 - Asteroid 49272 Bryce Canyon Closest Approach To Earth (2.209 AU)
Jun 04 - Asteroid 284891 Kona Closest Approach To Earth (2.748 AU)
Jun 04 - Kuiper Belt Object 278361 (2007 JJ43) At Opposition (39.991 AU)
Jun 04 - John Grigg's 180th Birthday (1838)
Jun 05 - Apollo Asteroid 2004 LB Near-Earth Flyby (0.092 AU)
Jun 05 - Apollo Asteroid 11885 Summanus Closest Approach To Earth (1.326 AU)
Jun 05 - Asteroid 17427 Poe Closest Approach To Earth (2.918 AU)
Jun 05 - Sydney Observatory's 160th Birthday (1858)
Jun 06 - Asteroid 23990 Springsteen Closest Approach To Earth (1.261 AU)
Jun 06 - Asteroid 2829 Bobhope Closest Approach To Earth (1.718 AU)
Jun 06 - Asteroid 9533 Aleksejleonov Closest Approach To Earth (2.012 AU)
Jun 06 - 35th Anniversary (1983), Venera 16 Launch (USSR Venus Orbiter)
Jun 07 - Dwarf Planet Ceres Occults 2UCAC 40020132 (12.3 Magniutde Star)
Jun 07 - Asteroid 16 Psyche Occults TYC 5586-00262-1 (11.9 Magnitude Star)
Jun 07 - Aten Asteroid 2017 EH1 Near-Earth Flyby (0.096 AU)
Jun 07 - Asteroid 2955 Newburn Closest Approach To Earth (0.920 AU)
Jun 07 - Asteroid 1718 Namibia Closest Approach To Earth (1.186 AU)
Jun 07 - Apollo Asteroid 4769 Castalia Closest Approach To Earth (1.206 AU)
Jun 07 - Asteroid 4535 Adamcarolla Closest Approach To Earth (1.356 AU)
Jun 07 - Asteroid 83360 Catalina Closest Approach To Earth (1.700 AU3)
Jun 07 - Bernard Burke's 90th Birthday (1928)
Jun 07 - 265th Anniversary (1753), British Museum Founded
Jun 08 - World Oceans Day
Jun 08 - Soyuz MS-9 Soyuz-FG Launch (International Space Station 55S)
Jun 08 - Comet 212P/NEAT At Opposition (3.758 AU)
Jun 08 - Comet P/2016 WM48 (Lemmon) At Opposition (3.852 AU)
Jun 08 - Apollo Asteroid 4660 Nereus Closest Approach To Earth (1.743 AU)
Jun 08 - Asteroid 20403 Attenborough Closest Approach To Earth (2.222 AU)
Jun 08 - Kuiper Belt Object 2010 KZ39 At Opposition (45.036 AU)
Jun 08 - 100th Anniversary (1918), Discovery of Nova Aquila
Jun 09 - Comet P/2012 TK8 (Tenagra) At Opposition (4.125 AU)
Jun 09 - Amor Asteroid 2009 SK104 Near-Earth Flyby (0.081 AU)
* Jun 09 - Asteroid 881 Athene Closest Approach To Earth (1.326 AU)
Jun 09 - Apollo Asteroid 4197 Morpheus Closest Approach To Earth (1.770 AU)
Jun 09 - Asteroid 130 Elektra Closest Approach To Earth (2.560 AU)
Jun 09 - Asteroid 2069 Hubble Closest Approach To Earth (2.589 AU)
* Jun 10 - Fengyun 2H CZ-3A Launch
Jun 10 - Comet 263P/Gibbs At Opposition (1.732 AU)
Jun 10 - Comet P/2001 T3 (NEAT) Perihelion (2.486 AU)
Jun 10 - Comet C/2015 VL62 At Opposition (2.940 AU)
Jun 10 - 15th Anniversary (2003), Mars Exploration Rover A (Spirit) Launch
Jun 10 - 45th Anniversary (1973), Explorer 49 Launch (Moon Orbiter)
* Jun 11 - IGS Radar-6 H-2A Launch
Jun 11 - Comet P/2007 T2 (Kowalski) Closest Approach To Earth (0.502 AU)
Jun 11 - Comet P/2017 G2 (PANSTARRS) At Opposition (2.989 AU)
Jun 11 - Amor Asteroid 2018 EJ4 Near-Earth Flyby (0.015 AU)
Jun 11 - Amor Asteroid 2015 DP155 Near-Earth Flyby (0.023 AU)
Jun 11 - Apollo Asteroid 2008 LA Near-Earth Flyby (0.071 AU)
* Jun 11 - Asteroid 26733 Nanavistor Closest Approach To Earth (1.370 AU)
* Jun 11 - Asteroid 6827 Wombat Closest Approach To Earth (2.023 AU)
Jun 11 - Neptune Trojan 2013 KY18 At Opposition (29.046 AU)
Jun 11 - Kuiper Belt Object 174567 Varda At Opposition (45.762 AU)
Jun 11 - 5th Anniversary (2013), Shenzhou 10 CZ-2F/H Launch (Chinese Manned Launch to Tian Gong1 1 Space Station)
Jun 11 - 70th Anniversary (1948), V-2 Blossom Launch (Carried Albert I the Rhesus Monkey)
Jun 11 - Johann Georg Palitzsch's 295th Birthday (1723)
Jun 12 - Gaofen 6/Luijia 1 CZ-2D Launch
Jun 12 - Comet 354P/LINEAR Closest Approach To Earth (1.559 AU)
Jun 12 - Asteroid 14593 Everett Closest Approach To Earth (1.598 AU)
Jun 12 - Asteroid 1241 Dysona Closest Approach To Earth (1.982 AU)
Jun 12 - Asteroid 70715 Allancheuvront Closest Approach To Earth (2.028 AU)
Jun 12 - David Gill's 175th Birthday (1843)
Jun 13 - Progress MS-7 Reenters Earth's Atmosphere (International Space Station)
Jun 13 - STP-2 Falcon Heavy Launch
* Jun 13 - ICON (MIDEX 8) Pegasus XL Launch
Jun 13 - Comet 354P/LINEAR At Opposition (1.559 AU)
Jun 13 - Comet 182P/LONEOS Closest Approach To Earth (2.859 AU)
Jun 13 - Asteroid 4 Vesta Occults 2UCAC 24411081 (11.8 Magnitude Star)
* Jun 13 - Asteroid 770 Bali Closest Approach To Earth (1.523 AU)

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