58 Persei

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58 Persei
Perseus constellation map.svg
Red circle.svg
Location of 58 Persei (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Perseus
Right ascension 04h 36m 41.43017s [1]
Declination +41° 15 53.3213 [1]
Apparent magnitude  (V)4.26 [2]
Characteristics
Spectral type K1II + B7V [3]
U−B color index +0.81 [2]
B−V color index +1.24 [2]
Astrometry
Radial velocity (Rv)+9.80 [4] km/s
Proper motion (μ)RA: −4.56 [1] mas/yr
Dec.: −17.84 [1] mas/yr
Parallax (π)4.09±0.38  mas [1]
Distance 800 ± 70  ly
(240 ± 20  pc)
Absolute magnitude  (MV)-2.67 [5]
Orbit [6]
Primary58 Persei A
Companion58 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 [7]   M
Radius 86.7+4.6
−5.1
[8]   R
Luminosity 1,731±323 [9]   L
Surface gravity (log g)2.21 [10]   cgs
Temperature 4,500 [9]   K
Metallicity [Fe/H]−0.20 [5]   dex
Rotational velocity (v sin i)11.0 [11]  km/s
Age 50.1±6.8 [7]   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 [12]
Database references
SIMBAD data

58 Persei is a binary [3] and possibly a triple [13] 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. [2] It is approximately 800  light years away from the Sun based on parallax, [1] and is drifting further away with a radial velocity of +10 km/s. [4]

This is a single-lined spectroscopic binary system with an orbital period of 28.7 years and an eccentricity of 0.65. [14] The primary member, designated component A, is an orange-hued (K–type) bright giant with a stellar classification of K1II. [3] The star is around 50 million years old [7] with 6.8 times the mass of the Sun. [7] Having exhausted the supply of hydrogen at its core, it has expanded to roughly 87 times the Sun's radius. [8] It is radiating 1,731 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,500 K. [9]

The secondary, component B, appears to be a B-type main-sequence star with a stellar classification of B7V. [3] It is a suspected binary of unknown period with component masses of 3.3 and 1.2 times the mass of the Sun. [13]

References

  1. 1 2 3 4 5 6 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
  2. 1 2 3 4 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. 1 2 3 4 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.
  4. 1 2 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.
  5. 1 2 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
  6. 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.
  7. 1 2 3 4 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
  8. 1 2 Baines, Ellyn K.; Clark, James H.; Kingsley, Bradley I.; Schmitt, Henrique R.; Stone, Jordan M. (2025-05-07). "Vintage NPOI: New and Updated Angular Diameters for 145 Stars". The Astronomical Journal. 169 (6): 293. arXiv: 2506.02912 . Bibcode:2025AJ....169..293B. doi: 10.3847/1538-3881/adc930 . ISSN   1538-3881.
  9. 1 2 3 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.
  10. 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.
  11. 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
  12. "58 Per". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019-07-23.
  13. 1 2 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 .
  14. 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.