Astronomy:HR 2096

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Short description: Star in the constellation Auriga
HR 2096
Observation data
{{#ifeq:J2000|J2000.0 (ICRS)|Epoch J2000.0      Equinox J2000.0 (ICRS)| Epoch J2000      [[Astronomy:Equinox (celestial coordinates)|Equinox J2000}}
Constellation Auriga[1]
A
Right ascension  06h 00m 18.8979s[2]
Declination +44° 35′ 31.247″[2]
Apparent magnitude (V) 6.20[3]
B
Right ascension  06h 00m 18.8991s[4]
Declination +44° 35′ 31.246″[4]
Apparent magnitude (V) 11.2[5]
Characteristics
Spectral type K2III[6]
Astrometry
A
Radial velocity (Rv)+3.02±0.01[7] km/s
Proper motion (μ) RA: −32.545[2] mas/yr
Dec.: −38.565[2] mas/yr
Parallax (π)8.6381 ± 0.0275[2] mas
Distance378 ± 1 ly
(115.8 ± 0.4 pc)
B
Radial velocity (Rv)+3.02±0.01[7] km/s
Proper motion (μ) RA: −33.530[4] mas/yr
Dec.: −37.595[4] mas/yr
Parallax (π)8.5217 ± 0.0551[4] mas
Distance383 ± 2 ly
(117.3 ± 0.8 pc)
Details
A
Mass1.39[8] M☉
Radius12.0[9] R☉
Luminosity60[9] L☉
Surface gravity (log g)2.60[9] cgs
Temperature4,646[9] K
Metallicity [Fe/H]−0.10[8] dex
Rotational velocity (v sin i)3.17[10] km/s
Age7.2[11] Gyr
B
Mass0.84[12] M☉
Surface gravity (log g)4.55[12] cgs
Temperature5,495[12] K
Other designations
BD+44°1332, HD 40325, HIP 28438, SAO 40769[13]
Database references
SIMBADdata

HR 2096, also known as HD 40325 is a double star about 380 light years away in the constellation Auriga. The primary is a giant star of spectral type K2III,[6] while the secondary is a hotter but less luminous star. It is not a member of any known moving group of stars.[14]

A third star 35″ (as of 2015) from the closer pair is listed in multiple star catalogues as component C,[15] but it is an unrelated background star.[16] It is another giant of spectral type K0III.[17]

References

  1. ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A  XHIP record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ Oja, T. (1991). "UBV photometry of stars whose positions are accurately known. VI.". Astronomy and Astrophysics Supplement Series 89: 415. Bibcode: 1991A&AS...89..415O. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  5. ↑ Turon, C. et al. (1993). "Version 2 of the HIPPARCOS Input Catalogue". Bulletin d'Information du Centre de Donnees Stellaires 43: 5. Bibcode: 1993BICDS..43....5T. 
  6. ↑ 6.0 6.1 Stephenson, C. B. (1960). "A study of visual binaries having primaries above the main sequence". The Astronomical Journal 65: 60. doi:10.1086/108191. Bibcode: 1960AJ.....65...60S. 
  7. ↑ 7.0 7.1 Jönsson, Henrik; Holtzman, Jon A.; Allende Prieto, Carlos; Cunha, Katia; García-Hernández, D. A.; Hasselquist, Sten; Masseron, Thomas; Osorio, Yeisson et al. (2020). "APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South". The Astronomical Journal 160 (3): 120. doi:10.3847/1538-3881/aba592. Bibcode: 2020AJ....160..120J. 
  8. ↑ 8.0 8.1 Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R. et al. (2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics 633: A34. doi:10.1051/0004-6361/201936360. Bibcode: 2020A&A...633A..34C. 
  9. ↑ 9.0 9.1 9.2 9.3 Yu, Jie; Khanna, Shourya; Themessl, Nathalie; Hekker, Saskia; Dréau, Guillaume; Gizon, Laurent; Bi, Shaolan (2023). "Revised Extinctions and Radii for 1.5 Million Stars Observed by APOGEE, GALAH, and RAVE". The Astrophysical Journal Supplement Series 264 (2): 41. doi:10.3847/1538-4365/acabc8. Bibcode: 2023ApJS..264...41Y. 
  10. ↑ Das, Pradosh Barun; Zucker, Daniel B.; De Silva, Gayandhi M.; Borsato, Nicholas W.; Mura-Guzmán, Aldo; Buder, Sven; Ness, Melissa; Nordlander, Thomas et al. (2025). "The GALAH Survey: Stellar parameters and abundances for 800 000 Gaia RVS spectra using GALAH DR4 and the Cannon". Monthly Notices of the Royal Astronomical Society 538 (2): 605. doi:10.1093/mnras/staf169. Bibcode: 2025MNRAS.538..605D. 
  11. ↑ Kordopatis, G.; Schultheis, M.; McMillan, P. J.; Palicio, P. A.; De Laverny, P.; Recio-Blanco, A.; Creevey, O.; Álvarez, M. A. et al. (2023). "Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters of Gaia DR3". Astronomy and Astrophysics 669: A104. doi:10.1051/0004-6361/202244283. Bibcode: 2023A&A...669A.104K. 
  12. ↑ 12.0 12.1 12.2 Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardèvol, J.; Casamiquela, L.; Figueras, F.; Jiménez-Arranz, Ó. et al. (2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy and Astrophysics 658: A91. doi:10.1051/0004-6361/202142369. Bibcode: 2022A&A...658A..91A. 
  13. ↑ "HR 2096". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HR+2096. 
  14. ↑ 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. Revisiting the concept of superclusters". Astronomy and Astrophysics 430: 165–186. doi:10.1051/0004-6361:20041272. Bibcode: 2005A&A...430..165F. 
  15. ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal 122 (6): 3466. doi:10.1086/323920. Bibcode: 2001AJ....122.3466M. 
  16. ↑ 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. 
  17. ↑ Stephenson, C. B. (1960). "A study of visual binaries having primaries above the main sequence". Astronomical Journal 65: 60–79. doi:10.1086/108191. Bibcode: 1960AJ.....65...60S. 




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