A table listing some of the Astronomical Phenomena for May 2013:
Phenomena May
| Day | Event |
|---|---|
| 2 | Last quarter Moon (11:14 UT) |
| 4 | Moon passes 6 degrees north of Neptune mag 7.9 (7 UT) |
| 5 | Eta Aquarids meteor shower peaks ZHR = 55 (1 UT) |
| 7 | Moon passes 4 degrees north of Uranus mag 5.9 (0 UT) |
| 9 | Asteroid (16) Psyche mag 10.4 is at opposition in Libra |
| 10 | New Moon. Annular solar eclipse visible from northeast Australia and Pacific Ocean (00:28 UT) |
| 11 | Mercury is at superior conjunction (21 UT) |
| 12 | Moon passes 3 degrees south of Jupiter mag -1.9 (13 UT) |
| 13 | Moon is at apogee 405,828 km (13:41 UT) |
| 16 | Asteroid (25) Phocaea mag 10.0 is at opposition in Libra |
| 18 | First quarter Moon (4:35 UT) |
| 18 | Venus mag. -3.9 passes 6 degrees north of Aldebaran mag 0.9 (10 UT) |
| 21 | Mercury mag. -1.3 passes 7 degrees north of Aldebaran mag 0.9 (1 UT) |
| 22 | Moon passes 0.005 degrees north of Spica mag 1.0, occultation is visible from southeast Asia and northeast Australia (11 UT) |
| 23 | Moon passes 4 degrees south of Saturn mag 0.2 (10 UT) |
| 23 | Asteroid (6) Hebe mag 9.6 is at opposition in Ophiuchus |
| 25 | Full Moon, penumbral lunar eclipse (4:25 UT) |
| 25 | Mercury mag -0.9 passes 1.4 degrees north of Venus mag -3.9 (4 UT) |
| 26 | Moon is at perigee 358,377 km (1:50 UT) |
| 27 | Mercury mag -0.8 passes 2 degrees north of Jupiter mag -1.9 (10 UT) |
| 28 | Venus mag. -3.9 passes 1 degree north of Jupiter mag -1.9 (21 UT) |
| 31 | Moon passes 6 degrees north of Neptune mag 7.9 (14 UT) |
| 31 | NEO 285263 mag 10.6 makes close approach to Earth 0.0392 AU (approx. 5.8 million km or 3.6 million miles) |
| 31 | Last quarter Moon (18:59 UT) |