HR 515

HR 515
Observation data
Epoch J2000      Equinox J2000
Constellation Pisces
Right ascension 01h 46m 35.2984s[1]
Declination +17° 24′ 45.719″[1]
Apparent magnitude (V) 6.55[2]
Characteristics
Spectral type A8 III[3]
B−V color index 0.256±0.010[2]
Variable type δ Sct[4]
Astrometry
Radial velocity (Rv)−1.0±4.4[5] km/s
Proper motion (μ) RA: +49.424[1] mas/yr
Dec.: +2.738[1] mas/yr
Parallax (π)5.94 ± 0.36[1] mas
Distance550 ± 30 ly
(170 ± 10 pc)
Absolute magnitude (MV)0.84[2]
Details
Luminosity38.31[2] L☉
Rotational velocity (v sin i)96[6] km/s
Other designations
3 Arietis, VY Psc, BD+16° 196, HD 10845, HIP 8271, HR 515, SAO 92622[7]
Database references
SIMBADdata

HR 515 is an A-type variable star of δ Scuti type[8] with a period of 0.219 days and an amplitude of 0.02 in visual magnitude.[4] Despite its Flamsteed designation of 3 Arietis (3 Ari), the star is actually located in the constellation Pisces near the border of Aries. Its apparent magnitude is 6.54–6.59.[8] The star has the variable star designation VY Piscium (VY Psc).[9]

References

  1. 1 2 3 4 5 Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.
  2. 1 2 3 4 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.
  3. ↑ Gray, R. O.; Garrison, R. F. (July 1989). "The Late A-Type Stars: Refined MK Classification, Confrontation with Stroemgren Photometry, and the Effects of Rotation". Astrophysical Journal Supplement. 70: 623. Bibcode:1989ApJS...70..623G. doi:10.1086/191349.
  4. 1 2 Rodríguez, E.; López-González, M. J.; López de Coca, P. (June 2000). "A revised catalogue of delta Sct stars". Astronomy and Astrophysics Supplement. 144: 469−474. Bibcode:2000A&AS..144..469R. doi:10.1051/aas:2000221.
  5. ↑ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012). "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project". Astronomy & Astrophysics. 546: 14. arXiv:1208.3048. Bibcode:2012A&A...546A..61D. doi:10.1051/0004-6361/201219219. A61.
  6. ↑ Royer, F.; et al. (October 2002). "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i". Astronomy and Astrophysics. 393: 897–911. arXiv:astro-ph/0205255. Bibcode:2002A&A...393..897R. doi:10.1051/0004-6361:20020943.
  7. ↑ "V* VY Psc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-02-26.
  8. 1 2 "VY Psc". VSX: The International Variable Star Index. American Association of Variable Star Observers. Retrieved 1 August 2014.
  9. ↑ "VY Psc (VY Piscium)". VSNET. Retrieved 1 August 2014.

Coordinates: 01h 46m 35.29944s, +17° 24′ 45.7133″

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