HD 172910

HD 172910
Location of HD 172910 (circled)
Observation data
Epoch J2000      Equinox ICRS
Constellation Sagittarius
Right ascension 18h 44m 19.35901s
Declination −35° 38′ 31.1546″
Apparent magnitude (V) 4.87
Characteristics
Spectral type B2.5V
U−B color index -0.72
B−V color index -0.18
Astrometry
Radial velocity (Rv)+3.90 km/s
Proper motion (μ) RA: -0.68 mas/yr
Dec.: -27.24 mas/yr
Parallax (π)6.99±0.23 mas
Distance470 ± 20 ly
(143 ± 5 pc)
Absolute magnitude (MV)-0.91
Details
Mass7.2 M☉
Luminosity602 L☉
Temperature15,000 K
Metallicity [Fe/H]+0.01 dex
Rotational velocity (v sin i)65 km/s
Other designations
CD-35°12876, CCDM J18443-3539A, FK5 3490, GC 25613, GSC 07419-03077, HIP 91918, HR 7029, HD 172910, SAO 210509, WDS J18443-3539A
Database references
SIMBADdata

HD 172910 is a class B2.5V (blue main-sequence) star in the constellation Sagittarius. Its apparent magnitude is 4.87 and it is approximately 467 light years away based on parallax.

It has one companion, B, with magnitude 12.6 and separation 10.0".

In Chinese astronomy, HD 172910 is called 農丈人 (Pinyin: Nóngzhàngrén, lit. 'Peasant'), because this star is marking itself and stand alone in Peasant asterism, Dipper mansion (see : Chinese constellation).

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 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. 1 2 3 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.
  4. ↑ Evans, D. S. (1967). "The Revision of the General Catalogue of Radial Velocities". Determination of Radial Velocities and Their Applications. 30: 57. Bibcode:1967IAUS...30...57E.
  5. 1 2 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
  6. ↑ 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. Vizier catalog entry
  7. ↑ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–357. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. S2CID 118665352. Vizier catalog entry
  8. ↑ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771–782. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. S2CID 118345778. Vizier catalog entry
  9. ↑ 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. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. Vizier catalog entry
  10. ↑ Ian Ridpath's Star Tales - Sagittarius the Archer