NGC 721 explained

NGC 721
Epoch:J2000
Constellation Name:Andromeda
Z:0.018566[1]
H Radial V:5514 km/s
Dist Ly:[2]
Type:SB(rs)bc[3]
Appmag B:13.8

NGC 721 is a barred spiral galaxy located in the constellation Andromeda about 250 million light years from the Milky Way. It was discovered by the Prussian astronomer Heinrich d'Arrest in 1862.[4] [5] [6]

See also

References

  1. NGC 721. 2020-05-20.
  2. 2016AJ....152...50T. 10.3847/0004-6256/152/2/50. 1605.01765. Cosmicflows-3. Tully, R. Brent. Courtois, Hélène M.. Sorce, Jenny G.. The Astronomical Journal. 152. 2. 50. 21. 2016. 250737862 . free .
  3. Web site: Results for object NGC 0721 (NGC 721). NASA/IPAC Extragalactic Database. California Institute of Technology. 2020-05-24.
  4. Web site: The galaxy NGC 721 - In-The-Sky.org. Ford. Dominic. in-the-sky.org. en. 2020-04-09.
  5. Web site: Revised NGC Data for NGC 721. spider.seds.org. 2020-04-09.
  6. Web site: Your NED Search Results. ned.ipac.caltech.edu. 2020-04-09.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "NGC 721".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.