Astronomy:16 Camelopardalis
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 05h 23m 27.84195s[1] |
| Declination | +57° 32′ 39.8364″[1] |
| Apparent magnitude (V) | 5.28[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A0Vn[4] |
| U−B color index | −0.07[2] |
| B−V color index | −0.03[2] |
| Astrometry | |
| Radial velocity (Rv) | 12.0±3.7[5] km/s |
| Proper motion (μ) | RA: +15.396[1] mas/yr Dec.: −54.447[1] mas/yr |
| Parallax (π) | 9.3655 ± 0.1506[1] mas |
| Distance | 348 ± 6 ly (107 ± 2 pc) |
| Absolute magnitude (MV) | 0.18[6] |
| Details | |
| Mass | 2.80±0.04[3] M☉ |
| Radius | 3.26[7] R☉ |
| Luminosity | 96.6+7.2 −6.6[3] L☉ |
| Temperature | 9,748+92 −87[3] K |
| Rotational velocity (v sin i) | 217[8] km/s |
| Age | 400[7] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
16 Camelopardalis is a single[10] star in the northern circumpolar constellation Camelopardalis,[9] located 348 light years away from the Sun as determined from parallax measurements.[1] It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.28.[2] This object is moving further from the Earth with a heliocentric radial velocity of around 12 km/s.[5]
This is an A-type main-sequence star with a stellar classification of A0 Vn,[4] where the 'n' notation indicates "nebulous" lines due to rapid rotation. In the past it was misidentified as a Lambda Boötis star.[11] It is around 400[7] million years old and is spinning with a projected rotational velocity of 217 km/s.[8] The star has 2.8[3] times the mass of the Sun and 3.3[7] times the Sun's radius. It is radiating 97[3] times the Sun's luminosity from its photosphere at an effective temperature of 9,748 K.[3]
An infrared excess indicates it has a dusty debris disk with a mean temperature of 120 K orbiting at a distance of 52 AU from the star. This disk has a combined mass equal to 2.1% the mass of the Earth.[7]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 Oja, T. (April 1983), "UBV photometry of FK4 and FK4 supplement stars", Astronomy and Astrophysics Supplement Series 52: 131–134, Bibcode: 1983A&AS...52..131O
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Zorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics 537: A120, doi:10.1051/0004-6361/201117691, Bibcode: 2012A&A...537A.120Z.
- ↑ 4.0 4.1 Cowley, A. et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal 74: 375–406, doi:10.1086/110819, Bibcode: 1969AJ.....74..375C
- ↑ 5.0 5.1 Kharchenko, N. V. et al. (2007), "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ˜55000 stars and mean radial velocities of 516 Galactic open clusters and associations", Astronomische Nachrichten 328 (9): 889–896, doi:10.1002/asna.200710776, Bibcode: 2007AN....328..889K
- ↑ Huang, W. et al. (2012), "A catalogue of Paschen-line profiles in standard stars", Astronomy & Astrophysics 547: A62, doi:10.1051/0004-6361/201219804, Bibcode: 2012A&A...547A..62H.
- ↑ 7.0 7.1 7.2 7.3 7.4 Rhee, Joseph H. et al. (May 2007), "Characterization of Dusty Debris Disks: The IRAS and Hipparcos Catalogs", The Astrophysical Journal 660 (2): 1556–1571, doi:10.1086/509912, Bibcode: 2007ApJ...660.1556R
- ↑ 8.0 8.1 Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics 463 (2): 671–682, doi:10.1051/0004-6361:20065224, Bibcode: 2007A&A...463..671R
- ↑ 9.0 9.1 "16 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=16+Cam.
- ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ Gerbaldi, M.; Faraggiana, R.; Lai, O. (December 2003), "The heterogeneous class of lambda Bootis stars", Astronomy and Astrophysics 412 (2): 447–464, doi:10.1051/0004-6361:20031472, Bibcode: 2003A&A...412..447G.
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