36 Cancri
36 Cancri is a star in the southern part of the zodiac constellation of Cancer, located around 501 light years away from the Sun. It has the Bayer designation c Cancri; 36 Cancri is the Flamsteed designation. This object is a visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.92.[2] It is moving further from the Earth with a heliocentric radial velocity of +16 km/s.[6]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 37m 05.76881s[1] |
| Declination | +09° 39′ 20.08650″[1] |
| Apparent magnitude (V) | 5.92[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A3 V[4][5] |
| B−V color index | 0.083±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | +16.4±2.5[6] km/s |
| Proper motion (μ) | RA: −28.271[1] mas/yr Dec.: −4.237[1] mas/yr |
| Parallax (π) | 6.5093 ± 0.0735 mas[1] |
| Distance | 501 ± 6 ly (154 ± 2 pc) |
| Absolute magnitude (MV) | 0.05[2] |
| Details | |
| Mass | 2.66±0.05[3] M☉ |
| Radius | 2.0[7] R☉ |
| Luminosity | 93.1+13.2 −11.6[3] L☉ |
| Temperature | 8472+98 −97[3] K |
| Rotational velocity (v sin i) | 44[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an ordinary A-type main-sequence star with a stellar classification of A3 V,[4] which indicates it is generating energy through hydrogen fusion at its core. It has a projected rotational velocity of 44 km/s, with 2.66[3] times the mass of the Sun and double the Sun's radius.[7] The star is radiating 93[3] times the Sun's luminosity from its photosphere at an effective temperature of 8,472 K.[3]
References edit
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ 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, S2CID 119257644.
- ^ a b c d e f g h Zorec, J.; et al. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy and Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
- ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
- ^ a b "36 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-02-28.
- ^ a b 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, S2CID 59451347, A61.
- ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (Third ed.): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.