HD 18970

Last updated
HD 18970
Perseus constellation map.svg
Red circle.svg
Location of k Persei (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Perseus
Right ascension 03h 05m 32.41223s [1]
Declination +56° 42′ 20.5858″ [1]
Apparent magnitude  (V)4.77 [2]
Characteristics
Evolutionary stage red giant branch [3]
Spectral type G9.5III [4]
U−B color index +0.85 [5]
B−V color index +1.02 [5]
Astrometry
Radial velocity (Rv)−46.37 [6] km/s
Proper motion (μ)RA: −12.72 [1] mas/yr
Dec.: +70.04 [1] mas/yr
Parallax (π)15.45±0.27  mas [1]
Distance 211 ± 4  ly
(65 ± 1  pc)
Absolute magnitude  (MV)0.72 [2]
Details
Mass 1.53 [7]   M☉
Radius 11 [7]   R☉
Luminosity 63.48 [2]   L☉
Surface gravity (log g)2.54 [7]   cgs
Temperature 4,900 [8]   K
Metallicity [Fe/H]−0.08 [2]   dex
Rotational velocity (v sin i)< 1.0 [9]  km/s
Other designations
k Persei, BD+56°767, FK5  2217, GC  3674, HIP  14382, HR  918, HD  18970, SAO  23791
Database references
SIMBAD data

HD 18970 is a class G9.5III [4] (yellow giant) star in the constellation Perseus. Its apparent magnitude is 4.77 [2] and it is approximately 211 light years away based on parallax. [1]

References

  1. 1 2 3 4 5 6 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. Vizier catalog entry
  2. 1 2 3 4 5 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
  3. ↑ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  4. 1 2 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.
  5. 1 2 Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M. Vizier catalog entry
  6. ↑ 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.
  7. 1 2 3 Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv: astro-ph/9911002 . Bibcode:1999A&A...352..555A. Vizier catalog entry
  8. ↑ Gontcharov, G. A. (2009). "Red giant clump in the Tycho-2 catalogue". Astronomy Letters. 34 (11): 785–796. arXiv: 1607.00619 . Bibcode:2008AstL...34..785G. doi:10.1134/S1063773708110078. S2CID   73524157. Vizier catalog entry
  9. ↑ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID   54046583. Vizier catalog entry


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