Astronomy:HD 152010
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Short description: Star in the constellation Apus
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Apus |
| Right ascension | 16h 57m 01.0485s[1] |
| Declination | −71° 06′ 41.9212″[1] |
| Apparent magnitude (V) | 6.48±0.01[2] |
| Characteristics | |
| Spectral type | A5 IV/V[3] |
| U−B color index | +0.15[4] |
| B−V color index | +0.26[4] |
| Astrometry | |
| Radial velocity (Rv) | −15.0±0.5[5] km/s |
| Proper motion (μ) | RA: −8.941[1] mas/yr Dec.: −36.107[1] mas/yr |
| Parallax (π) | 3.2415 ± 0.0204[1] mas |
| Distance | 1,006 ± 6 ly (308 ± 2 pc) |
| Absolute magnitude (MV) | −0.95[6] |
| Details | |
| Mass | 2.2[7] M☉ |
| Radius | 10.01[8] R☉ |
| Luminosity | 193[8] L☉ |
| Surface gravity (log g) | 2.85[7] cgs |
| Temperature | 7,155[7] K |
| Metallicity [Fe/H] | −1.49[7] dex |
| Rotational velocity (v sin i) | 61.5±2.5[9] km/s |
| Age | 179[10] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 152010 is a solitary star in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.48, placing it near the max visibility for the naked eye. Located 1,006 light years[1]away, the object is approaching the Solar System with a heliocentric radial velocity of −15 km/s.[5]
This A-type star has either luminosity class intermediate between a subgiant and a main sequence star. At present it has 2.2 times the mass of the Sun but has expanded to 10 times its diameter. It shines at 193 L☉ from its enlarged photosphere at an effective temperature of 7,155 K, giving it a white glow. HD 152010 is 179 million years old − 2.1% past the main sequence − and spins quickly with a projected rotational velocity of 61.5 km/s. There is a 12th magnitude companion star at an angular separation of 2.9″ along a position angle of 162° (as of 2016).[11]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. ISSN 0004-6361. Bibcode: 2000A&A...355L..27H.
- ↑ 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.
- ↑ 4.0 4.1 Moreno, H.; Carrasco, G. (July 1986). "UBVRI photometry of FK4 and FK4 supplement stars.". Astronomy and Astrophysics Supplement Series 65: 33–39. ISSN 0365-0138. Bibcode: 1986A&AS...65...33M.
- ↑ 5.0 5.1 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.
- ↑ 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.
- ↑ 7.0 7.1 7.2 7.3 Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A. et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics 628: 25. doi:10.1051/0004-6361/201935765. Bibcode: 2019A&A...628A..94A.
- ↑ 8.0 8.1 McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society 471 (1): 770. doi:10.1093/mnras/stx1433. Bibcode: 2017MNRAS.471..770M.
- ↑ Ammler-von Eiff, M.; Reiners, A. (June 2012). "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?". Astronomy & Astrophysics 542: A116. doi:10.1051/0004-6361/201118724. ISSN 0004-6361. Bibcode: 2012A&A...542A.116A.
- ↑ Zorec, J.; Royer, F. (January 2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. ISSN 0004-6361. Bibcode: 2012A&A...537A.120Z.
- ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal 122 (6): 3466–3471. doi:10.1086/323920. ISSN 0004-6256. Bibcode: 2001AJ....122.3466M.
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