| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lynx |
| Right ascension | 08 08 27.44632 |
| Declination | +51° 30′ 24.0055″ |
| Apparent magnitude (V) | 4.78 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A2 V |
| B−V color index | 0.048±0.006 |
| Astrometry | |
| Radial velocity (Rv) | +11.0±4.2 km/s |
| Proper motion (μ) | RA: −60.95 mas/yr Dec.: −3.11 mas/yr |
| Parallax (π) | 13.04 ± 0.31 mas |
| Distance | 250 ± 6 ly (77 ± 2 pc) |
| Absolute magnitude (MV) | 0.36 |
| Details | |
| Mass | 2.24 M☉ |
| Luminosity | 65.41 L☉ |
| Surface gravity (log g) | 3.96 cgs |
| Temperature | 10,014±340 K |
| Rotational velocity (v sin i) | 183 km/s |
| Age | 157 Myr |
| Other designations | |
| 27 Lyn, BD+51°1391, FK5 307, HD 67006, HIP 39847, HR 3173, SAO 26687, WDS J08085+5130A | |
| Database references | |
| SIMBAD | data |
27 Lyncis is a single star in the northern constellation of Lynx. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.78. This object is located around 250 light years away from the Sun, as determine from parallax measurements. It is moving further from the Sun with a heliocentric radial velocity of +11 km/s.
This is an ordinary A-type main-sequence star with a stellar classification of A2 V, which indicates it is generating energy through hydrogen fusion at its core. It is 157 million years old and is spinning with a projected rotational velocity of 183. The star has 2.24 times the mass of the Sun and is radiating 65 times the Sun's luminosity from its photosphere at an effective temperature of 10,014 K. X-ray emission is being detected near these coordinates, which may be coming from an undetected companion or a background source.
References
- ^ 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.
- ^ 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.
- ^ 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.
- ^ David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
- "27 Lyn". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-06-06.
- 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.
- De Rosa, R. J.; et al. (July 2011), "The Volume-limited A-Star (VAST) survey - I. Companions and the unexpected X-ray detection of B6-A7 stars", Monthly Notices of the Royal Astronomical Society, 415 (1): 854–866, arXiv:1103.4363, Bibcode:2011MNRAS.415..854D, doi:10.1111/j.1365-2966.2011.18765.x, S2CID 84181878.
