HD 20468 is a class K2II[3] (orange bright giant) star in the constellation Perseus. Its apparent magnitude is 4.82[2] and it is approximately 1180 light years away based on parallax.[1]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 03h 18m 43.82583s[1] |
| Declination | 34° 13′ 21.5473″[1] |
| Apparent magnitude (V) | 4.82[2] |
| Characteristics | |
| Spectral type | K2IICN1[3] |
| U−B color index | 1.55[2] |
| B−V color index | 1.49[2] |
| Astrometry | |
| Radial velocity (Rv) | 1.80[4] km/s |
| Proper motion (μ) | RA: 2.75[1] mas/yr Dec.: -8.87[1] mas/yr |
| Parallax (π) | 2.77 ± 0.23 mas[1] |
| Distance | 1,180 ± 100 ly (360 ± 30 pc) |
| Absolute magnitude (MV) | -2.92[5] |
| Details | |
| Mass | 7.0[6] M☉ |
| Luminosity | 3512[7] L☉ |
| Surface gravity (log g) | 1.09[8] cgs |
| Temperature | 4,369[8] K |
| Metallicity [Fe/H] | 0.03[8] dex |
| Rotational velocity (v sin i) | 5.9[9] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
edit- ^ a b c d e f 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 18759600.653-664&rft.date=2007&rft_id=info:arxiv/0708.1752&rft_id=https://api.semanticscholar.org/CorpusID:18759600#id-name=S2CID&rft_id=info:doi/10.1051/0004-6361:20078357&rft_id=info:bibcode/2007A&A...474..653V&rft.aulast=Van Leeuwen&rft.aufirst=F.&rfr_id=info:sid/en.wikipedia.org:HD 20468" class="Z3988"> Vizier catalog entry
- ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- ^ a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit , 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
- ^ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data". Astronomy & Astrophysics. 430: 165–186. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.165-186&rft.date=2005&rft_id=info:arxiv/astro-ph/0409579&rft_id=https://api.semanticscholar.org/CorpusID:17804304#id-name=S2CID&rft_id=info:doi/10.1051/0004-6361:20041272&rft_id=info:bibcode/2005A&A...430..165F&rft.aulast=Famaey&rft.aufirst=B.&rft.au=Jorissen, A.&rft.au=Luri, X.&rft.au=Mayor, M.&rft.au=Udry, S.&rft.au=Dejonghe, H.&rft.au=Turon, C.&rfr_id=info:sid/en.wikipedia.org:HD 20468" class="Z3988">
- ^ 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. Vizier catalog entry
- ^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.190-200&rft.date=2011&rft_id=info:arxiv/1007.4883&rft_id=https://api.semanticscholar.org/CorpusID:118629873#id-name=S2CID&rft_id=info:doi/10.1111/j.1365-2966.2010.17434.x&rft_id=info:bibcode/2011MNRAS.410..190T&rft.aulast=Tetzlaff&rft.aufirst=N.&rft.au=Neuhäuser, R.&rft.au=Hohle, M. M.&rft_id=https://doi.org/10.1111%2Fj.1365-2966.2010.17434.x&rfr_id=info:sid/en.wikipedia.org:HD 20468" class="Z3988"> Vizier catalog entry
- ^ Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349. arXiv:1003.2335. Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. S2CID 111387483. Vizier catalog entry
- ^ a b c Earle Luck, R. (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
- ^ De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Vizier catalog entry
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