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 back on at the other edge, often an hour later. Pick your place and instrument; the list shows only what you can see.
16 occultations you can see from New Delhi with a small telescope (80 mm) this month, on 10 nights · 1148 in all from there
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
- 120:07:54 HIP 32086 V 7.3Disappears at the dark limb
Night of Mon 7 Jun
- 121:08:55 HIP 38113 V 8.2Disappears at the dark limb
Night of Tue 8 Jun
- 120:20:41 HIP 43079 V 7.9Disappears at the dark limb
- 221:00:00 HIP 43206 V 7.2Disappears at the dark limb
- 321:16:10 TYC 1396-2099-1 V 8.5Disappears at the dark limb · reappears 21:25:58 at the dark limb
- 422:07:48 HIP 43412 V 8.0Disappears at the dark limb
Night of Wed 9 Jun
- 122:48:23 HR 3882 V 7.0Disappears at the dark limb
- 222:51:24 19 Leo V 6.5Disappears at the dark limb
Night of Fri 11 Jun
- 122:10:55 TYC 4923-978-1 V 7.1Disappears at the dark limb
Night of Mon 14 Jun
- 101:01:48 HIP 68314 V 7.1Disappears at the dark limb
Night of Thu 17 Jun
- 103:32:39 HR 6216 V 6.7Disappears at the dark limb
Night of Sun 20 Jun
- 102:53:08 χ1 Sgr V 4.9Disappears at the bright limb · reappears 04:19:01 at the dark limb
Night of Tue 22 Jun
- 102:28:07 HIP 103703 V 6.1Reappears at the dark limb
Night of Sat 26 Jun
- 101:13:25 TYC 590-60-1 V 7.2Reappears at the dark limb
- 201:17:00 HIP 118104 V 7.6Reappears at the dark limb
- 301:19:26 TYC 590-192-1 V 7.6Reappears at the dark limb
Reading the list
The Moon images use LRO LOLA terrain (a 40 KB relief map), lit and tilted as at that moment. North up, east left. Dark-limb events are easy to see: the star vanishes at, or reappears from, the Moon's unlit edge. At the bright limb only bright stars show against the glare. PA is where on the edge it happens, measured from north through east. Cusp angle is the distance from the crescent's nearest tip. graze means the star skims the edge from your place and may blink 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 |
Rules of thumb: the dark-limb limit drops by 2.5 mag × (lit fraction − 0.4) in moonglare and by 1 mag in twilight. Events with the Moon below 5° are left out, and so are daylight events except for the brightest stars. Stars: Gaia DR3 to G 9.5, Hipparcos-2 for the brightest, names from the Yale Bright Star Catalogue. Moon: JPL DE431. Times use the Moon's smooth edge (±2 s). Mountains can shift a contact by seconds, and by more near a graze.