Gemini Gem
Gemini is one of the 88 constellations, covering 514 square degrees of the sky (30th largest). It is highest at midnight in January and best in the evening sky in February and March.
13 of its best-known objects have a page of their own here.
Facts
| Abbreviation | Gem |
|---|---|
| Size | 514 square degrees (30th largest of the 88; the full Moon covers about 0.2) |
| Middle (J2000) | 7h 09m, +23° |
| Highest at midnight | January (in the evening, around 8–10 pm: February and March) |
| How high | From India (about 20° N) its middle climbs to about 87° above the horizon; from 50° N, to about 63°. |
| Pages here | 13 objects |
Nebulae
3Star clusters
1Black holes, pulsars and other extreme objects
1Planetary systems
1Stars
7Brightest NGC and IC objects
OpenNGC| Object | Type | Magnitude | Size |
|---|---|---|---|
| NGC 2129 (on the map) | Open star cluster | 6.7 | 3.9′ |
| IC 444 (on the map) | Reflection nebula | 7 | 8′ |
| NGC 2395 (on the map) | Open star cluster | 8 | 4.6′ |
| NGC 2420 (on the map) | Open star cluster | 8.3 | 7.5′ |
| IC 2157 (on the map) | Open star cluster | 8.4 | 2.7′ |
| NGC 2331 (on the map) | Open star cluster | 8.5 | 4.8′ |
| NGC 2158 (on the map) | Open star cluster | 8.6 | 8.4′ |
| NGC 2266 (on the map) | Open star cluster | 9.5 | 4.2′ |
| NGC 2392 (Eskimo Nebula) | Planetary nebula | 9.6 | 0.9′ |
| NGC 2355 (on the map) | Open star cluster | 9.7 | 6′ |
| NGC 2304 (on the map) | Open star cluster | 10 | 4.8′ |
| NGC 2371 (on the map) | Planetary nebula | 11.2 | 2.2′ |
Smaller magnitudes are brighter; the faintest stars the eye sees are about 6. The full Moon is about 31′ across.
Data: IAU constellation boundaries (Roman 1987) · OpenNGC (Mattia Verga, CC BY-SA 4.0) · Data sources & credits