Astronomy:HD 91496
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Short description: Giant star in the constellation Carina
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 31m 02.057s[1] |
| Declination | −73° 13′ 17.38″[1] |
| Apparent magnitude (V) | 4.92[2] |
| Characteristics | |
| Evolutionary stage | giant |
| Spectral type | K4/5 III[3] |
| Variable type | suspected[4] |
| Astrometry | |
| Radial velocity (Rv) | 13.14[1] km/s |
| Proper motion (μ) | RA: -7.00[1] mas/yr Dec.: 7.66[1] mas/yr |
| Parallax (π) | 3.1223 ± 0.1500[1] mas |
| Distance | 1,040 ± 50 ly (320 ± 20 pc) |
| Absolute magnitude (MV) | -2.55[5] |
| Details | |
| Mass | 6[6] M☉ |
| Radius | 115[1] R☉ |
| Luminosity | 2,787[1] L☉ |
| Surface gravity (log g) | 1.34[7] cgs |
| Temperature | 3,915[1] K |
| Rotational velocity (v sin i) | 5.7[8] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 91496 (HR 4142) is a giant star in the constellation Carina, with an apparent magnitude is 4.92 and an MK spectral class of K4/5 III. It has been suspected of varying in brightness, but this has not been confirmed.
HD 91496 has a faint companion, six magnitudes fainter and 33″ away.[10] It is a distant background star.[11]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 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. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27. 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.
- ↑ Samus, N. N. et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S 1: B/gcvs. Bibcode: 2009yCat....102025S.
- ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric (2019). "Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly". Astronomy and Astrophysics 623: A72. doi:10.1051/0004-6361/201834371. Bibcode: 2019A&A...623A..72K.
- ↑ Kunder, Andrea; Kordopatis, Georges; Steinmetz, Matthias; Zwitter, Tomaž; McMillan, Paul J.; Casagrande, Luca; Enke, Harry; Wojno, Jennifer et al. (2017). "The Radial Velocity Experiment (RAVE): Fifth Data Release". The Astronomical Journal 153 (2): 75. doi:10.3847/1538-3881/153/2/75. Bibcode: 2017AJ....153...75K.
- ↑ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy and Astrophysics 561: A126. doi:10.1051/0004-6361/201220762. Bibcode: 2014A&A...561A.126D.
- ↑ "HR 4142". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HR+4142.
- ↑ Sinachopoulos, D.; Gavras, P.; Dionatos, O.; Ducourant, Ch.; Medupe, Th. (2007). "CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars". Astronomy and Astrophysics 472 (3): 1055. doi:10.1051/0004-6361:20066290. Bibcode: 2007A&A...472.1055S.
- ↑ Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
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