1 Vulpeculae is a class B4IV[3] (blue subgiant) star in the constellation Vulpecula. Its apparent magnitude is 4.77[2] and it is approximately 780 light years away based on parallax.[1]
The primary was discovered to be a spectroscopic binary in 1978 with a period around 250 days although the orbital elements are described as marginal.[8] There are also companions B, with magnitude 11.6 and separation 39.1", and C, with magnitude 12.8 and separation 43.6".[9][10]
Component A is also a suspected variable star, reported to vary from 4.57 to 4.77 in magnitude.[11] It was reported as possibly variable in 1952 during a search for β CMa variables,[12] but has not been seen to vary since. It was listed as one of the least variable stars based on Hipparcos photometry.[13]
On 29 May 1983, 1 Vulpeculae was occulted by the asteroid Pallas. This event was observed at 130 locations in the United States and Mexico and was the best observed of all asteroid occultation events.[14]
^ abcdefCite error: The named reference Gaia EDR3 was invoked but never defined (see the help page).
^ abcdDucati, 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.
^Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Carnegie Institution of Washington. Bibcode:1953GCRV..C......0W. LCCN 54001336.
^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 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873. Vizier catalog entry
^Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi:10.1086/340590.
^Cite error: The named reference Abt1978 was invoked but never defined (see the help page).
^Dommanget, J.; Nys, O. (2002). "VizieR Online Data Catalog: CCDM (Catalog of Components of Double & Multiple stars) (Dommanget+ 2002)". VizieR On-line Data Catalog: I/274. Originally Published in: Observations et Travaux 54. 1274. Bibcode:2002yCat.1274....0D. Vizier catalog entry
^Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. Vizier catalog entry
^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....102025S.
^Walker, M. F. (1952). "A search for stars of the beta Canis Majoris type". Astronomical Journal. 57: 227. Bibcode:1952AJ.....57..227W. doi:10.1086/106759.
^Adelman, S. J. (2001). "Research Note Hipparcos photometry: The least variable stars". Astronomy and Astrophysics. 367: 297–298. Bibcode:2001A&A...367..297A. doi:10.1051/0004-6361:20000567.
^Cite error: The named reference Dunham1990 was invoked but never defined (see the help page).
1Vulpeculae is a class B4IV (blue subgiant) star in the constellation Vulpecula. Its apparent magnitude is 4.77 and it is approximately 780 light years...
Alpha Vulpeculae (α Vulpeculae, abbreviated Alpha Vul, α Vul), officially named Anser /ˈænsər/, is the brightest star in the constellation of Vulpecula...
magnitude in this constellation. The brightest star in Vulpecula is Alpha Vulpeculae, a magnitude 4.44m red giant at an approximate distance of 291 light-years...
1983, 2 Pallas occulted the naked-eye bright spectroscopic binary star 1Vulpeculae along a track across the southern United States, northern Mexico, and...
(1990). "The size and shape of (2) Pallas from the 1983 occultation of 1Vulpeculae". Astronomical Journal. 99: 1636–1662. Bibcode:1990AJ.....99.1636D. doi:10...
SV Vulpeculae is a classical Cepheid (δ Cepheid) variable star in the constellation Vulpecula. It is a supergiant at a distance of 8,700 light years. SV...
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Vulpeculae is a variable star located in the constellation Vulpecula. A supergiant star, it is around 382 times the diameter of the Sun. S Vulpeculae...
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