HR 515
Appearance
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 mas[1] |
Distance | 550 ± 30 ly (170 ± 10 pc) |
Absolute magnitude (MV) | 0.84[2] |
Details | |
Luminosity | 38.31[2] L☉ |
Rotational velocity (v sin i) | 96[6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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
- ^ a b c d e 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.
- ^ a b c d 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.
- ^ 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.
- ^ a b 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.
- ^ 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.
- ^ 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.
- ^ "V* VY Psc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-02-26.
- ^ a b "VY Psc". VSX: The International Variable Star Index. American Association of Variable Star Observers. Retrieved 1 August 2014.
- ^ "VY Psc (VY Piscium)". VSNET. Retrieved 1 August 2014.