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10 Persei
	Location of 10 Per (circled)
Observation data; Epoch J2000 Equinox J2000
Constellation	Perseus
Right ascension	02h 25m 16.02834s
Declination	+56° 36′ 35.3544″
Apparent magnitude (V)	6.26
Characteristics
Evolutionary stage	Blue supergiant
Spectral type	B2Ia
U−B color index	−0.61
B−V color index	+0.30
Variable type	α Cyg
Astrometry
Radial velocity (Rv)	−39.87±1.93 km/s
Proper motion (μ)	RA: −0.508 mas/yr ; Dec.: −1.182 mas/yr
Parallax (π)	0.4424 ± 0.0263 mas
Distance	7000±815 ly ; (2,150±250 pc)
Absolute magnitude (MV)	−6.70
Details
Mass	23.6±1.9 M☉
Radius	49±6 R☉
Luminosity	257,000 L☉
Surface gravity (log g)	2.45±0.07 cgs
Temperature	18,600±300 K
Rotational velocity (v sin i)	48±6 km/s
Age	7.76 Myr
Other designations
	V554 Persei, HR 696, HD 14818, BD+55°612, HIP 11279, SAO 23304, GC 2885
Database references
SIMBAD	data

10 Persei is a blue supergiant star in the constellation Perseus. Its apparent magnitude is 6.26 although it is slightly variable.

10 Persei is located around 3,333 parsecs (10,870 ly) distant in the Perseus OB1 stellar association. It lies close to the Double Cluster and is considered a cluster member.^[7]

A light curve for V554 Persei, plotted from *Hipparcos* data^[8]

In 1999, 10 Persei was given the variable star designation V554 Persei, after being identified as varying in Hipparcos photometry.^[9] Its brightness varies by less than a tenth of a magnitude with no clear period.^[4]

References

^ ^a ^b ^c ^d ^e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ ^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.
^ Kraus, M.; Borges Fernandes, M.; Kubát, J. (2009). "Parameters of galactic early B supergiants. The influence of the wind on the interstellar extinction determination". Astronomy and Astrophysics. 499 (1): 291. Bibcode:2009A&A...499..291K. doi:10.1051/0004-6361/200810319.
^ ^a ^b 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.
^ ^a ^b Weßmayer, D.; Przybilla, N.; Butler, K. (2022-12-01), "Quantitative spectroscopy of B-type supergiants", Astronomy & Astrophysics, 668: A92, arXiv:2208.02692, Bibcode:2022A&A...668A..92W, doi:10.1051/0004-6361/202243973, ISSN 0004-6361
^ Searle, S. C.; Prinja, R. K.; Massa, D.; Ryans, R. (2008). "Quantitative studies of the optical and UV spectra of Galactic early B supergiants. I. Fundamental parameters". Astronomy and Astrophysics. 481 (3): 777. arXiv:0801.4289. Bibcode:2008A&A...481..777S. doi:10.1051/0004-6361:20077125. S2CID 1552752.
^ Lee, Hsu-Tai; Lim, Jeremy (2008). "On the Formation of Perseus OB1 at High Galactic Latitudes". The Astrophysical Journal. 679 (2): 1352–1363. arXiv:0804.4520. Bibcode:2008ApJ...679.1352L. doi:10.1086/587801. S2CID 14252530.
^ "Hipparcos Tools Interactive Data Access". Hipparcos. ESA. Retrieved 8 December 2021.
^ Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Frolov, M. S.; Antipin, S. V.; Kireeva, N. N.; Pastukhova, E. N. (1999). "The 74th Special Name-list of Variable Stars". Information Bulletin on Variable Stars. 4659: 1. Bibcode:1999IBVS.4659....1K.