Multiple-star system in the constellation of Perseus
This article is about e Persei. Not to be confused with ε (epsilon) Persei .
58 Persei
Location of 58 Persei (circled)
Observation dataEpoch J2000 Equinox J2000
Constellation
Perseus
Right ascension
04 36 41.43017
Declination
+41° 15′ 53.3213″
Apparent magnitude (V)
4.26
Characteristics
Spectral type
K1II + B7V
U−B color index
+0.81
B−V color index
+1.24
Astrometry Radial velocity (Rv )+9.80 km/s Proper motion (μ) RA: −4.56 mas /yr Dec.: −17.84 mas /yr Parallax (π)4.09 ± 0.38 mas Distance 800 ± 70 ly (240 ± 20 pc ) Absolute magnitude (MV )-2.67
Orbit Primary 58 Persei A Companion 58 Persei B Period (P)28.8 yr Semi-major axis (a)0.051″ Eccentricity (e)0.64 Inclination (i)81° Longitude of the node (Ω)237° Periastron epoch (T)1978.65 Argument of periastron (ω) (secondary)191°
Details 58 Per A Mass 6.8±0.2 M ☉ Radius 70.71±6.67 R ☉ Luminosity 1,731±323 L ☉ Surface gravity (log g )2.21 cgs Temperature 4,500 K Metallicity −0.20 dex Rotational velocity (v sin i )11.0 km/s Age 50.1±6.8 Myr
Other designations Boss 1074, 58 Per , BD +40°1000, FK5 2338, GC 5609, HD 29094–95, HIP 21476, HR 1454, SAO 39639, CCDM J04367+4116A
Database references SIMBAD data
58 Persei is a binary and possibly a triple star system in the northern constellation of Perseus . It has the Bayer designation e Persei , while 58 Persei is the Flamsteed designation . This system is visible to the naked eye as a faint point of light with an apparent visual magnitude of 4.26. It is approximately 800 light years away from the Sun based on parallax , and is drifting further away with a radial velocity of +10 km/s.
This is a single-lined spectroscopic binary system with an orbital period of 28.7 years and an eccentricity of 0.65. The primary member, designated component A, is an orange-hued (K–type ) bright giant with a stellar classification of K1II. The star is around 50 million years old with 7 times the mass of the Sun . Having exhausted the supply of hydrogen at its core , it has expanded to roughly 71 times the Sun's radius . It is radiating 1,731 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,500 K.
The secondary, component B, appears to be a B-type main-sequence star with a stellar classification of B7V. It is a suspected binary of unknown period with component masses of 3.3 and 1.2 times the mass of the Sun.
References
^ Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics . 474 (2): 653–664. arXiv :0708.1752 . Bibcode :2007A&A...474..653V . doi :10.1051/0004-6361:20078357 . S2CID 18759600 . Vizier catalog entry
^ 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 .
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems" . Monthly Notices of the Royal Astronomical Society . 389 (2): 869–879. arXiv :0806.2878 . Bibcode :2008MNRAS.389..869E . doi :10.1111/j.1365-2966.2008.13596.x . S2CID 14878976 .
^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters . 32 (11): 759–771. arXiv :1606.08053 . Bibcode :2006AstL...32..759G . doi :10.1134/S1063773706110065 . S2CID 119231169 .
^ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv :1108.4971 . Bibcode :2012AstL...38..331A . doi :10.1134/S1063773712050015 . S2CID 119257644 . Vizier catalog entry
Heintz, W.D. (1997). "Photographic astrometry of binary and proper-motion stars. VII". Astronomical Journal . 105 (3): 1188–1195. Bibcode :1997yCat.1239....0E . doi :10.1086/116503 .
^ 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
^ van Belle, Gerard T.; von Braun, Kaspar; Ciardi, David R.; Pilyavsky, Genady; Buckingham, Ryan S.; Boden, Andrew F.; Clark, Catherine A.; Hartman, Zachary; van Belle, Gerald; Bucknew, William; Cole, Gary (2021-12-01). "Direct Measurements of Giant Star Effective Temperatures and Linear Radii: Calibration against Spectral Types and V - K Color" . The Astrophysical Journal . 922 (2): 163. arXiv :2107.09205 . Bibcode :2021ApJ...922..163V . doi :10.3847/1538-4357/ac1687 . ISSN 0004-637X . 58 Persei's database entry at VizieR .
Soubiran, Caroline; Le Campion, Jean-François; Brouillet, Nathalie; Chemin, Laurent (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics . 591 : A118. arXiv :1605.07384 . Bibcode :2016A&A...591A.118S . doi :10.1051/0004-6361/201628497 . S2CID 119258214 .
De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series . 139 (3): 433. arXiv :astro-ph/0608248 . Bibcode :1999A&AS..139..433D . doi :10.1051/aas:1999401 . Vizier catalog entry
"58 Per" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-07-23.
^ Parsons, Sidney B. (May 2004). "New and Confirmed Triple Systems with Luminous Cool Primaries and Hot Companions" . The Astronomical Journal . 127 (5): 2915–2930. Bibcode :2004AJ....127.2915P . doi :10.1086/383546 .
Batten, Alan H.; Fletcher, J. M.; MacCarthy, D. G. (1989). "Catalogue of the orbital elements of spectroscopic binary systems : 8 : 1989". Publications of the Dominion Astrophysical Observatory . 17 : 1. Bibcode :1989PDAO...17....1B .
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