Astronomy:HD 1032

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Short description: Star in the constellation Octans
HD 1032
Observation data
Epoch J2000.0   Equinox (celestial coordinates)
Constellation Octans
Right ascension  00h 13m 19.6219s[1]
Declination −84° 59′ 38.3178″[1]
Apparent magnitude (V) 5.77[2]
Characteristics
Evolutionary stage AGB[3]
Spectral type M0/1 III[4]
U−B color index +2.10[2]
B−V color index +1.72[2]
Variable type suspected[5]
Astrometry
Radial velocity (Rv)4±0.4[6] km/s
Proper motion (μ) RA: +11.046[1] mas/yr
Dec.: +17.696[1] mas/yr
Parallax (π)3.8517 ± 0.0501[1] mas
Distance850 ± 10 ly
(260 ± 3 pc)
Absolute magnitude (MV)−1.57[7]
Details
Mass1.11[8] M☉
Radius95.54[9] R☉
Luminosity1,461[10] L☉
Surface gravity (log g)0.69[8] cgs
Temperature3,838±122[11] K
Metallicity [Fe/H]−0.08[8] dex
Other designations
CPD−85°2, FK5 3972, GC 257, HD 1032, HIP 1074, HR 47, SAO 258217[12]
Database references
SIMBADdata

HD 1032 (HR 47) is a solitary[13] star in the southern circumpolar constellation Octans. It is faintly visible to the naked eye with an apparent magnitude of 5.77[2] and is estimated to be 850 light years away from the Solar System based on parallax measure.[1] However, it is receding with a heliocentric radial velocity of 4 km/s.

HD 1032 is an asymptotic giant branch[3] star with a stellar classification of M0/1 III[4] — intermediate between a M0 and M1 giant star. It has 111% the mass of the Sun[8] and an enlarged radius of 95.54 R☉[9] as a result of its evolved state. It radiates at 1,461 times the luminosity of the Sun[10] from its photosphere at an effective temperature of 3,838 K,[11] giving a red hue. HD 1032 is slightly metal deficient with an iron abundance 83% that of the Sun.[8]

This is a suspected variable star that fluctuates between magnitudes 5.82 and 5.88 in the Hipparcos passband.[5]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 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.
  2. ↑ 2.0 2.1 2.2 2.3 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. 
  3. ↑ 3.0 3.1 Eggen, Olin J. (July 1992). "Asymptotic giant branch stars near the sun". The Astronomical Journal 104: 275. doi:10.1086/116239. ISSN 0004-6256. Bibcode: 1992AJ....104..275E. 
  4. ↑ 4.0 4.1 Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_ƒ0.. Bibcode: 1975mcts.book.....H. 
  5. ↑ 5.0 5.1 Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports 61 (1): 80–88. doi:10.1134/S1063772917010085. ISSN 1063-7729. Bibcode: 2017ARep...61...80S. 
  6. ↑ 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. 
  7. ↑ 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. 
  8. ↑ 8.0 8.1 8.2 8.3 8.4 Anders, F. et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics 628: A94. doi:10.1051/0004-6361/201935765. ISSN 0004-6361. Bibcode: 2019A&A...628A..94A. 
  9. ↑ 9.0 9.1 Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics 657: A7. doi:10.1051/0004-6361/202142146. ISSN 0004-6361. Bibcode: 2022A&A...657A...7K. 
  10. ↑ 10.0 10.1 McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society 471 (1): 770–791. doi:10.1093/mnras/stx1433. ISSN 0035-8711. Bibcode: 2017MNRAS.471..770M. 
  11. ↑ 11.0 11.1 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. 
  12. ↑ "HR 47". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HR+47. 
  13. ↑ Eggleton, P. P.; Tokovinin, A. A. (11 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. ISSN 0035-8711. Bibcode: 2008MNRAS.389..869E. 
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