The Moon and the stars — June 2027

Lunar occultations of stars to magnitude 9.5, computed for your location

Every night the Moon slides in front of stars. A star doesn't fade behind it — it switches off, then switches back on at the other edge, often an hour later. Pick your place and what you observe with; the list keeps what you can realistically see.

Naked eye Binoculars Small telescope (80 mm) Telescope (200 mm)

16 occultations you can see from New Delhi with small telescope (80 mm) this month, on 10 nights · 1153 in all from there

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 7

1 8

4 9

Times in IST. A night runs from noon to noon, so an event at 01:30 stays with the evening before. On each Moon, the numbered marks show where on the limb each star disappears or reappears.

Night of Sun 6 Jun

1
20:07:54 HIP 32086 V 7.3
Disappears at the dark limb
11° up in the WNW · dusk · PA 62° · cusp 63°

Night of Mon 7 Jun

1
21:08:55 HIP 38113 V 8.2
Disappears at the dark limb
10° up in the WNW · dark sky · PA 119° · cusp 70°

Night of Tue 8 Jun

1
20:20:41 HIP 43079 V 7.9
Disappears at the dark limb
30° up in the W · dark sky · PA 138° · cusp 58°
2
21:00:00 HIP 43206 V 7.2
Disappears at the dark limb
22° up in the W · dark sky · PA 116° · cusp 79°
3
21:16:10 TYC 1396-2099-1 V 8.5
Disappears at the dark limb · reappears 21:25:58 at the dark limb
18° up in the W · dark sky · PA 38° · cusp 23°
4
22:07:48 HIP 43412 V 8.0
Disappears at the dark limb
7° up in the WNW · dark sky · PA 127° · cusp 69°

Night of Wed 9 Jun

1
22:48:23 HR 3882 V 7.0
Disappears at the dark limb
7° up in the W · dark sky · PA 87° · cusp 67°
2
22:51:24 19 Leo V 6.5
Disappears at the dark limb
7° up in the W · dark sky · PA 52° · cusp 31°

Night of Fri 11 Jun

1
22:10:55 TYC 4923-978-1 V 7.1
Disappears at the dark limb
30° up in the WSW · dark sky · PA 99° · cusp 76°

Night of Mon 14 Jun

1
01:01:48 HIP 68314 V 7.1
Disappears at the dark limb
13° up in the WSW · dark sky · PA 179° · cusp 17°

Night of Thu 17 Jun

1
03:32:39 HR 6216 V 6.7
Disappears at the dark limb
8° up in the SW · dark sky · PA 122° · cusp 45°

Night of Sun 20 Jun

1
02:53:08 χ1 Sgr V 4.9
Disappears at the bright limb · reappears 04:19:01 at the dark limb
35° up in the SSW · dark sky · PA 49° · cusp 50°

Night of Tue 22 Jun

1
02:28:07 HIP 103703 V 6.1
Reappears at the dark limb
42° up in the SSE · dark sky · PA 259° · cusp 85°

Night of Sat 26 Jun

1
01:13:25 TYC 590-60-1 V 7.2
Reappears at the dark limb
17° up in the E · dark sky · PA 213° · cusp 57°
2
01:17:00 HIP 118104 V 7.6
Reappears at the dark limb
18° up in the E · dark sky · PA 197° · cusp 41°
3
01:19:26 TYC 590-192-1 V 7.6
Reappears at the dark limb
19° up in the E · dark sky · PA 221° · cusp 65°

Reading the list

The Moons are drawn from LRO LOLA topography (a 40 KB relief map), lit by the Sun as it is at that moment and turned to the Moon's real libration: north up, east to the left. A dark-limb event — the star vanishing into, or popping out of, the unlit edge of the Moon — is easy to see. At the bright limb only bright stars show against the glare. PA is where on the limb it happens, measured from north through east; the cusp angle is the distance from the nearest horn of the crescent. graze marks a star passing within 3″ of the edge from your place: a few kilometres from a graze line, where it may blink several times behind mountains.

Instrument	dark limb	bright limb
Naked eye	V ≤ 3.0	V ≤ 1.0
Binoculars	V ≤ 6.5	V ≤ 3.5
Small telescope (80 mm)	V ≤ 8.5	V ≤ 5.5
Telescope (200 mm)	V ≤ 9.5	V ≤ 7.0

Those limits are rules of thumb: the dark-limb limit drops by 2.5 magnitudes × (lit fraction − 0.4) in moonglare and by 1 in twilight; events with the Moon under 5° are left out, and daylight events except for the brightest stars. Stars are from Gaia DR3 to G 9.5, with Hipparcos-2 for the brightest and the Yale Bright Star Catalogue for names; the Moon is from the JPL DE431 ephemeris. Times are for the Moon's mean limb, ±2 s — mountains at the edge can move a contact by a few seconds, and much more near a graze.