World Library  
Flag as Inappropriate
Email this Article

Zeta Persei

Article Id: WHEBN0003110306
Reproduction Date:

Title: Zeta Persei  
Author: World Heritage Encyclopedia
Language: English
Subject: List of stars in Perseus, L1448-IRS2E, 2 Persei, DY Persei, 20 Persei
Collection: Bayer Objects, B-Type Supergiants, Perseus (Constellation), Stars with Proper Names
Publisher: World Heritage Encyclopedia

Zeta Persei

Zeta Persei
Diagram showing star positions and boundaries of the Perseus constellation and its surroundings

Location of ζ Persei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 03h 54m 07.92248s[1]
Declination +31° 53′ 01.0812″[1]
Apparent magnitude (V) 2.86[2]
Spectral type B1 Ib[3]
U−B color index –0.72[2]
B−V color index +0.10[2]
Radial velocity (Rv) 20.1 ± 1.2[4] km/s
Proper motion (μ) RA: +5.77[1] mas/yr
Dec.: –9.92[1] mas/yr
Parallax (π) 4.34 ± 0.19[1] mas
Distance 750 ± 30 ly
(230 ± 10 pc)
Mass 14.5 ± 1.9[5] M
Radius 26–27[6] R
Luminosity 47,039[5] L
Temperature 20,800[5] K
Rotation 2.9–17.3 days
Rotational velocity (v sin i) 40[3] km/s
Age 12.6 ± 1.5[7] Myr
Other designations
44 Per, FK5 144, HD 24398, HIP 18246, HR 1203, SAO 56799.[8]

Zeta Persei (ζ Per, ζ Persei) is a star in the northern constellation of Perseus. With an apparent visual magnitude of 2.9,[2] it can be readily seen with the naked eye. Parallax measurements place it at a distance of about 750 light-years (230 parsecs) from Earth.[1]

This is a lower luminosity supergiant star with a stellar classification of B1 Ib.[3] This is an enormous star, with an estimated 26–27[6] times the Sun's radius and 13–16 times the Sun's mass.[6] It has about 47,000 times the luminosity of the Sun and it is radiating this energy at an effective temperature of 20,800 K,[5] giving it the blue-white hue of a B-type star.[9] The spectrum displays anomalously high levels of carbon.[10] Zeta Persei has a strong stellar wind that is expelling 0.23 × 10−6 times the mass of the Sun per year, or the equivalent of the Sun's mass every 4.3 million years.[11]

Zeta Persei has a 9th magnitude companion at an angular separation of 12.9 arcseconds. The two stars have the same proper motion, so they may be physically associated. If so, they are separated by at least 4,000 Astronomical Units.[12] Zeta Persei is a confirmed member of the Perseus OB2 association (Per OB2), also called the Zeta Persei association, which is a moving group of stars that includes 17 massive, high luminosity members with spectral types of O or B, giving them a blue hue. These stars have a similar trajectory through space,[4] suggesting they originated in the same molecular cloud and are about the same age.[13]


  • See also 1
  • Ambiguity 2
  • References 3
  • External links 4

See also

  • Druuge, a fictional race from the 1992 computer game Star Control II whose home world is a planet orbiting Zeta Persei.


Some sources, including Starry Night (planetarium software), an atlas,[14] and a web site[15] attribute the name 'Atik' to Zeta Persei instead of nearby Omicron Persei.


  1. ^ a b c d e f
  2. ^ a b c d
  3. ^ a b c
  4. ^ a b
  5. ^ a b c d
  6. ^ a b c
  7. ^
  8. ^
  9. ^
  10. ^
  11. ^
  12. ^
  13. ^
  14. ^
  15. ^ Your Sky Object Catalogue: Named Stars

External links

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.