53 Persei

53 Persei is a single variable star in the northern constellation of Perseus. It has the Bayer designation d Persei, while 53 Persei is the Flamsteed designation. The star is visible to the naked eye as a faint, blue-white hued point of light with an apparent visual magnitude of 4.8. It is located approximately 480 light years away from the Sun, as determined from parallax, and is drifting further away with a radial velocity of +7.3 km/s. This star has a stellar classification of B4IV, and was the prototype of a class of variable stars known as slowly pulsating B stars. It was one of the first mid-B type variable stars in the northern hemisphere to be studied. The star undergoes non-radial pulsations with a primary period of 2.36 days. Observation of the star with the BRITE satellite revealed eight separate frequencies in the star's light curve. 53 Persei is around 50 million years old with a projected rotational velocity of 15 km/s. It has six times the mass of the Sun and four times the Sun's radius. The star is radiating 780 times the luminosity of the Sun from its photosphere at an effective temperature of 16,720 K.

Star in the constellation Perseus

This article is about d Persei; not to be confused with δ (delta) Persei.

53 Persei

Location of 53 Persei (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Perseus[1]
Right ascension	04h 21m 33.16624s[2]
Declination	+46° 29′ 55.9648″[2]
Apparent magnitude (V)	4.77 - 4.86[3]
Characteristics
Evolutionary stage	main sequence[2]
Spectral type	B4IV[4]
U−B color index	−0.52[5]
B−V color index	−0.03[5]
Variable type	SPB[6]
Astrometry
Radial velocity (Rv)	+7.30[7] km/s
Proper motion (μ)	RA: +21.659[2] mas/yr Dec.: −35.177[2] mas/yr
Parallax (π)	6.8802±0.1353 mas[2]
Distance	474 ± 9 ly (145 ± 3 pc)
Absolute magnitude (MV)	−1.42[8]
Details
Mass	5.9±0.1[9] M☉
Radius	3.98±0.49[8] R☉
Luminosity	779.8+213.3 −167.5[8] L☉
Surface gravity (log g)	3.93±0.09[8] cgs
Temperature	16,720[10] K
Rotational velocity (v sin i)	15[11] km/s
Age	50.1±9.3[9] Myr
Other designations
d Per, 53 Per, V469 Per, NSV 1560, BD+46°872, FK5 2319, GC 5256, HD 27396, HIP 20354, HR 1350, SAO 39483[12]
Database references
SIMBAD	data

53 Persei is a single^[13] variable star in the northern constellation of Perseus. It has the Bayer designation d Persei, while 53 Persei is the Flamsteed designation. The star is visible to the naked eye as a faint, blue-white hued point of light with an apparent visual magnitude of 4.8. It is located approximately 480 light years away from the Sun, as determined from parallax, and is drifting further away with a radial velocity of +7.3 km/s.^[7]

This star has a stellar classification of B4IV,^[4] and was the prototype of a class of variable stars known as slowly pulsating B stars.^[15] It was one of the first mid-B type variable stars in the northern hemisphere to be studied.^[6] The star undergoes non-radial pulsations with a primary period of 2.36 days. Observation of the star with the BRITE satellite revealed eight separate frequencies in the star's light curve.^[6]

53 Persei is around 50^[9] million years old with a projected rotational velocity of 15 km/s.^[11] It has six^[9] times the mass of the Sun and four^[8] times the Sun's radius. The star is radiating 780^[8] times the luminosity of the Sun from its photosphere at an effective temperature of 16,720 K.^[10]

References

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1. ^ 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. XHIP record for this object at VizieR.
2. ^ ^{a b c d e f} 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.
3. ^ "V469 Per". International Variable Star Index. AAVSO. Retrieved 2026-04-05.
4. ^ ^{a b} Lesh, Janet Rountree (1968). "The Kinematics of the Gould Belt: An Expanding Group?". Astrophysical Journal Supplement. 17: 371. Bibcode:1968ApJS...17..371L. doi:10.1086/190179.
5. ^ ^{a b} Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
6. ^ ^{a b c} Niemczura, E.; et al. (September 2017). Zwintz, Konnstanze; Poretti, Ennio (eds.). Photometric and spectroscopic variability of 53 Per. Second BRITE-Constellation Science Conference: Small satellites—big science, held 22–26 August 2016 in Innsbruck, Austria. Vol. 5. Warsaw, Poland: Polish Astronomical Society. pp. 217–218. Bibcode:2017sbcs.conf..217N.
7. ^ ^{a b} 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.
8. ^ ^{a b c d e f} Briquet, M.; et al. (April 2007). "On the co-existence of chemically peculiar Bp stars, slowly pulsating B stars and constant B stars in the same part of the HR diagram". Astronomy and Astrophysics. 466 (1): 269–276. arXiv:astro-ph/0702111. Bibcode:2007A&A...466..269B. doi:10.1051/0004-6361:20066940. S2CID 16304587.
9. ^ ^{a b c d} Tetzlaff, N.; et al. (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
10. ^ ^{a b} Zorec, J.; et al. (2009). "Fundamental parameters of B supergiants from the BCD system". Astronomy and Astrophysics. 501 (1): 297–320. arXiv:0903.5134. Bibcode:2009A&A...501..297Z. doi:10.1051/0004-6361/200811147. S2CID 14969137.
11. ^ ^{a b} Abt, Helmut A.; et al. (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573 (1): 359–365. Bibcode:2002ApJ...573..359A. doi:10.1086/340590.
12. ^ "53 Per". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-07-18.
13. ^ 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.
14. ^ Huang, L.; Guo, Z.; Hao, J.; Percy, J. R.; Fieldus, M. S.; Fried, R.; Pavlovski, K.; Bozic, H.; Ruzic, Z.; Paparo, M.; Vetoe, B. (August 1994). "A Multisite UBV Photometric Campaign on 53 Persei in 1991 January". The Astrophysical Journal. 431: 850–869. Bibcode:1994ApJ...431..850H. doi:10.1086/174536.
15. ^ Le Contel, J. M.; et al. (1989). "Spectral variations in 53 Per". Acta Astronomica. 39 (3): 227–234. Bibcode:1989AcA....39..227L.