Astronomy:HD 33266
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Short description: Star in the constellation Camelopardalis
| Observation data Epoch J2000.0 Equinox (celestial coordinates) | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 05h 13m 02.8149s[1] |
| Declination | +61° 51′ 00.1463″[1] |
| Apparent magnitude (V) | 6.17±0.01[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | A2 Vam[note 1] |
| U−B color index | +0.08[4] |
| B−V color index | +0.04[4] |
| Astrometry | |
| Radial velocity (Rv) | −4.4±2.9[5] km/s |
| Proper motion (μ) | RA: −12.154[1] mas/yr Dec.: +2.135[1] mas/yr |
| Parallax (π) | 6.7795 ± 0.0364[1] mas |
| Distance | 481 ± 3 ly (147.5 ± 0.8 pc) |
| Absolute magnitude (MV) | +0.58[6] |
| Details | |
| Mass | 2.45+0.32−0.34[7] M☉ |
| Radius | 3.14±0.08[7] R☉ |
| Luminosity | 49.7[8] L☉ |
| Surface gravity (log g) | 3.83+0.07−0.06[7] cgs |
| Temperature | 8,952[8] K |
| Metallicity [Fe/H] | 0.00[9] dex |
| Rotational velocity (v sin i) | 15±1[10] km/s |
| Age | 340[9] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 33266 (HR 1675) is a solitary star in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 6.17, making it faintly visible to the naked eye. Located 481 light years away, it is approaching the Sun with a heliocentric radial velocity of −4.4 km/s.
HD 33266 is an A-type star with 2.45 times the mass of the Sun and 3.14 times the radius of the Sun.[7] It shines at 49.7 solar luminosity from its photosphere at an effective temperature of 8,952 K,[8] giving it a white glow. Due to HD 33266 being an Am star,[3] it spins slowly with a projected rotational velocity of 15 km/s[10] at an age of 340 million years.[9] Its metallicity − elements heavier than helium − is at solar level.[9]
Note
- ↑ Despite it being referenced as either A2 III or IV, this is actually an Am main sequence star.
References
- ↑ 1.0 1.1 1.2 1.3 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. ISSN 0004-6361. Bibcode: 2000A&A...355L..27H.
- ↑ 3.0 3.1 Çalışkan, Şeyma; Kılıçoğlu, Tolgahan; Elmaslı, Aslı; Nasolo, Yahya; Avcı, Zeynep; Albayrak, Berahitdin (January 2015). "Chemical abundance analysis of the A-type stars CP Cyg and HD 33266". New Astronomy 34: 6–10. doi:10.1016/j.newast.2014.05.001. ISSN 1384-1076. Bibcode: 2015NewA...34....6C.
- ↑ 4.0 4.1 Mermilliod, J. -C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data: 0. Bibcode: 1986EgUBV........0M.
- ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. ISSN 1063-7737. Bibcode: 2006AstL...32..759G.
- ↑ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation" (in en). Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1063-7737. Bibcode: 2012AstL...38..331A.
- ↑ 7.0 7.1 7.2 7.3 Stassun, Keivan G. et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256. Bibcode: 2019AJ....158..138S.
- ↑ 8.0 8.1 8.2 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (21 November 2012). "Fundamental parameters and infrared excesses of Hipparcos stars: Parameters and IR excesses from Hipparcos". Monthly Notices of the Royal Astronomical Society 427 (1): 343–357. doi:10.1111/j.1365-2966.2012.21873.x. ISSN 0035-8711. Bibcode: 2012MNRAS.427..343M.
- ↑ 9.0 9.1 9.2 9.3 Gontcharov, G. A. (December 2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters 38 (12): 771–782. doi:10.1134/S1063773712120031. ISSN 0320-0108. Bibcode: 2012AstL...38..771G.
- ↑ 10.0 10.1 Royer, F.; Grenier, S.; Baylac, M.-O.; Gómez, A. E.; Zorec, J. (October 2002). "Rotational velocities of A-type stars: II. Measurement of ${v\sin i}$ in the northern hemisphere". Astronomy & Astrophysics 393 (3): 897–911. doi:10.1051/0004-6361:20020943. ISSN 0004-6361. Bibcode: 2002A&A...393..897R.
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