| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Coma Berenices |
| Right ascension | 12 26 59.29615 |
| Declination | +26° 49′ 32.5273″ |
| Apparent magnitude (V) | 4.96 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A4 V |
| Astrometry | |
| Radial velocity (Rv) | +0.40±0.70 km/s |
| Proper motion (μ) | RA: −11.456 mas/yr Dec.: −9.220 mas/yr |
| Parallax (π) | 11.6745 ± 0.2116 mas |
| Distance | 279 ± 5 ly (86 ± 2 pc) |
| Details | |
| Mass | 2.54±0.03 M☉ |
| Radius | 3.71 R☉ |
| Luminosity | 68.6+3.5 −3.3 L☉ |
| Surface gravity (log g) | 3.67 cgs |
| Temperature | 8,299+57 −58 K |
| Metallicity | −0.3 dex |
| Rotational velocity (v sin i) | 80 km/s |
| Age | 310 Myr |
| Other designations | |
| 16 Com, BD+27°2134, FK5 2997, HD 108382, HIP 60746, HR 4738, SAO 82314 | |
| Database references | |
| SIMBAD | data |
16 Comae Berenices is a single star in the northern constellation of Coma Berenices. 16 Comae Berenices is the Flamsteed designation. It is a member of the Coma Star Cluster and is visible to the naked eye with an apparent visual magnitude of 4.96. Based upon an annual parallax shift of 11.7 mas, it is located about 279 light years away.
This is a chemically-peculiar A-type main-sequence star with a stellar classification of A4 V. It displays an infrared excess, suggesting the presence of an orbiting debris disk at a mean distance of 18.2 AU with a temperature of 180 K. 16 Com has 2.54 times the mass of the Sun and 3.71 times the Sun's radius. The star is 310 million years old with a projected rotational velocity of 80 km/s. It is radiating 67 times the Sun's luminosity from its photosphere at an effective temperature of 8,299 K.
References
- ^ 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.
- ^ Gebran, M.; et al. (February 2008), "Chemical composition of A and F dwarf members of the Coma Berenices open cluster", Astronomy and Astrophysics, 479 (1): 189–206, arXiv:0712.0244, Bibcode:2008A&A...479..189G, doi:10.1051/0004-6361:20078807, S2CID 118369727.
- ^ 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.
- 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.
- ^ Cotten, Tara H.; Song, Inseok (July 2016), "A Comprehensive Census of Nearby Infrared Excess Stars", The Astrophysical Journal Supplement Series, 225 (1): 24, arXiv:1606.01134, Bibcode:2016ApJS..225...15C, doi:10.3847/0067-0049/225/1/15, S2CID 118438871, 15.
- ^ 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.
- Gebran, M.; et al. (2016), "A new method for the inversion of atmospheric parameters of A/Am stars", Astronomy & Astrophysics, 589: A83, arXiv:1603.01146, Bibcode:2016A&A...589A..83G, doi:10.1051/0004-6361/201528052, S2CID 118549566.
- "16 Com". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-01-05.
- 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.
