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 solar luminosity 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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