Omicron Persei

From Wikipedia, the free encyclopedia
Jump to: navigation, search
ο Persei
Perseus constellation map.svg
Red circle.svg

Location of ο Persei (circled red)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 03h 44m 19.13204s[1]
Declination 32° 17′ 17.6929″[1]
Apparent magnitude (V) 3.83[2]
Spectral type B1III / B2V[3]
U−B color index -0.75[2]
B−V color index +0.05[2]
Variable type ellipsoidal[4]
Radial velocity (Rv) +12.20[5] km/s
Proper motion (μ) RA: +8.18[1] mas/yr
Dec.: -10.43[1] mas/yr
Parallax (π) 2.91 ± 0.73[1] mas
Distance approx. 1,100 ly
(approx. 340 pc)
Mass 15.5[6] M
Luminosity 61,869[7] L
Temperature 22,840[8] K
Rotational velocity (v sin i) 90[9] km/s
Other designations
Atik, 38 Persei, ADS 2726 AB, BD+31°642, CCDM J03443+3217AB, GC 4461, GSC 02359-01258, HIP 17448, HR 1131, HD 23180, SAO 56673, WDS J03443+3217AB
Database references

Omicron Persei (ο Persei, abbreviated Omicron Per, ο Per), also named Atik,[10] is a binary star in the constellation of Perseus.


ο Persei (Latinised to Omicron Persei) is the star's Bayer designation.

It bore the traditional name Atik (also Ati, Al Atik), Arabic for "the shoulder". Some sources, including a planetarium software package, an atlas,[11] and a web site[12] attribute the name Atik to the nearby, brighter star Zeta Persei. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[13] to catalogue and standardize proper names for stars. The WGSN approved the name Atik for Omicron Persei on 12 September 2016 and it is now so entered in the IAU Catalog of Star Names.[10]


USS Atik was a ship of the United States Navy.


Atik is a spectroscopic binary consisting of a spectral type B1 giant and a type B2 dwarf orbiting each other every 4.4 days.[3]

In fiction[edit]

Omicron Persei is perhaps best known from the animated television series Futurama, where it is the home star system of the Omicronians—a race of giant, horned toad creatures. Its eighth planet is ruled by the despotic leader, Lrrr,[14] who loudly and frequently announces the name of his home system.

It has been featured in other science fiction, including Star Trek, Alien: Covenant, Mystery Science Theater 3000, and Transformers.


  1. ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D. 
  3. ^ a b Stickland, D. J.; Lloyd, C. (1998). "Spectroscopic binary orbits from ultraviolet radial velocities. Paper 28: Omicron Persei". The Observatory. 118: 138. Bibcode:1998Obs...118..138S. 
  4. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....1.2025S. 
  5. ^ Pourbaix, D.; Tokovinin, A. A.; Batten, A. H.; Fekel, F. C.; Hartkopf, W. I.; Levato, H.; Morrell, N. I.; Torres, G.; Udry, S. (2004). "SB9: The ninth catalogue of spectroscopic binary orbits". Astronomy and Astrophysics. 424 (2): 727. arXiv:astro-ph/0406573Freely accessible. Bibcode:2004A&A...424..727P. doi:10.1051/0004-6361:20041213. 
  6. ^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190. arXiv:1007.4883Freely accessible. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.  Vizier catalog entry
  7. ^ Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335Freely accessible. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355.  Vizier catalog entry
  8. ^ Zorec, J.; Cidale, L.; Arias, M. L.; Frémat, Y.; Muratore, M. F.; Torres, A. F.; Martayan, C. (2009). "Fundamental parameters of B supergiants from the BCD system". Astronomy and Astrophysics. 501: 297. arXiv:0903.5134Freely accessible. Bibcode:2009A&A...501..297Z. doi:10.1051/0004-6361/200811147. 
  9. ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573: 359. Bibcode:2002ApJ...573..359A. doi:10.1086/340590. 
  10. ^ a b "IAU Catalog of Star Names". Retrieved 28 July 2016. 
  11. ^ Mullaney, James, and Tirion, Wil (2009). The Cambridge Double Star Atlas, Chart 7. University Press, Cambridge. ISBN 978-0-521-49343-7. 
  12. ^ Your Sky Object Catalogue: Named Stars
  13. ^ IAU Working Group on Star Names (WGSN), International Astronomical Union, retrieved 22 May 2016. 
  14. ^ Wallace, Lewis (25 August 2010). "Futurama Takes Starbuck and Sergio Aragonés to Comic-Con in 3010". Wired. Condé Nast. Retrieved 25 December 2014. 

External links[edit]