File:M025.jpg · Wikimedia Commons · See Wikimedia Commons
Key facts
- Right ascension
- 18 31 47.0
- Declination
- −19 ° 07 ′ 00 ″
- Distance
- 2,000 ly (620 pc )
- Apparent dimensions v
- 36 ′
- Mass
- 1,937 M ☉ M ☉
- Radius
- 6.5 light-years
- Estimated age
- 67.6 million years
- Other designations
- Messier 25, IC 4725, Cr 382, C 1828–192, Mel 204
via Wikipedia infobox
Wikidata facts
- Distance from Earth
- 620
- Radius
- 10
- Image
- M025.jpg
Show 13 more facts
- Commons category
- Messier 25
- time of discovery or invention
- 1745-00-00
- catalog code
- [KPS2012] MWSC 2940
- Commons gallery
- Messier 25
- apparent magnitude
- 4.6
- spectral class
- IV
- right ascension
- 277.9458
- declination
- -19.1167
- radial velocity
- 61.206
- parallax
- 1.5043
- metallicity
- 0.00
- right ascension component of proper motion
- -1.720
- declination component of proper motion
- -6.101
Sources (2)
via Wikidata · CC0
~1 min read
Article
Messier 25, also known as IC 4725, is an open cluster of stars in the southern constellation of Sagittarius. The first recorded observation of this cluster was made by Philippe Loys de Chéseaux in 1745 and it was included in Charles Messier's list of nebulous objects in 1764. The cluster is located near some obscuring features, with a dark lane passing near the center.
M25 is at a distance of about 2,000 light-years away from Earth and is 67.6 million years old. The spatial dimension of this cluster is about 13 light-years across. It has an estimated mass of 1,937 M☉, of which about 24% is interstellar matter. A Delta Cephei type variable star designated U Sagittarii is a member of this cluster, as are two red giants, one of which is a binary system.