Key facts
- Right ascension
- 07 38 25
- Declination
- +21 ° 34 ′ 30 ″
- Distance
- 10,060 ly (3,085 pc )
- Apparent dimensions v
- 6.4'
- Estimated age
- 2 billion years
- Other designations
- Melotte 69, Collinder 154
- Constellation
- Gemini
via Wikipedia infobox
Wikidata facts
- Instance of
- open cluster
- Constellation
- Gemini
- Distance from Earth
- 8100
- Image
- NGC2420.jpg
Show 12 more facts
- Commons category
- NGC 2420
- catalog code
- Melotte 69
- discoverer or inventor
- William Herschel
- time of discovery or invention
- 1783-11-19
- apparent magnitude
- 8.3
- right ascension
- 114.5958
- declination
- 21.5733
- epoch
- J2000.0
- radial velocity
- 73.57
- metallicity
- -0.05
- right ascension component of proper motion
- -1.32
- declination component of proper motion
- -4.18
via Wikidata · CC0
~3 min read
Encyclopedic overview
NGC 2420 is an open cluster in the constellation Gemini. It was discovered by German-British astronomer William Herschel on 19 November 1783. The cluster is about two billion years old and it is located 10,000 light years away.
Observation
Excerpted from Wikipedia’s “NGC 2420” article, available under the CC BY-SA 4.0 licence.