astro.wikisort.org - Star

Search / Calendar

HD 114533 (HR 4976) is a solitary star in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude of 5.84,[2] allowing it to be viewed with the naked eye under ideal conditions. Located approximately 2,100 light years away,[1] the object is approaching the Solar System with a heliocentric radial velocity of about −18 km/s.[6]

HD 114533
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Chamaeleon
Right ascension 13h 14m 17.3297s[1]
Declination −78° 26′ 50.8362″[1]
Apparent magnitude (V) 5.84±0.01[2]
Characteristics
Spectral type F8 Ib[3] or G2 Ib[4]
U−B color index +0.72[5]
B−V color index +1.07[5]
Astrometry
Radial velocity (Rv)−17.9±0.3[6] km/s
Proper motion (μ) RA: −9.435[1] mas/yr
Dec.: −4.222[1] mas/yr
Parallax (π)1.5528 ± 0.0359 mas[1]
Distance2,100 ± 50 ly
(640 ± 10 pc)
Absolute magnitude (MV)−2.0[7]
Details
Mass3.78[8] M☉
Radius66.92[9] R☉
Luminosity861[10] L☉
Surface gravity (log g)1.21[8] cgs
Temperature4,765[10] K
Metallicity [Fe/H]−0.42[8] dex
Rotational velocity (v sin i)9.2±1[11] km/s
Other designations
44 G. Chamaeleontis, CPD−77°890, GC 17886, HD 114533, HIP 64587, HR 4976, SAO 257019
Database references
SIMBADdata

This is a F[4] or G-type supergiant[4] with 3.78 times the mass of the Sun[8] and 66.92 times the radius of the Sun.[9] It shines at 861 L☉ from its enlarged photosphere at an effective temperature of 4,765 K,[10] giving it an orange yellow glow. HD 114533 is metal deficient due to a metallicity only 38% that of the Sun[8] and spins modestly with a projected rotational velocity of 9.2 km/s.[11]


References


  1. Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  3. Malaroda, S. (August 1975). "Study of the F-type 1 MK spectral types". The Astronomical Journal. 80: 637. Bibcode:1975AJ.....80..637M. doi:10.1086/111786. ISSN 0004-6256.
  4. 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. Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. ISSN 1063-7737. S2CID 119231169.
  7. Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. ISSN 1063-7737. S2CID 119257644.
  8. Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; de Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361.
  9. Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256.
  10. McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (21 November 2012). "Fundamental parameters and infrared excesses of Hipparcos stars: Parameters and IR excesses from Hipparcos". 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. ISSN 0035-8711.
  11. De Medeiros, J. R.; Udry, S.; Burki, G.; Mayor, M. (November 2002). "A catalog of rotational and radial velocities for evolved stars: II. Ib supergiant stars". Astronomy & Astrophysics. 395 (1): 97–98. Bibcode:2002A&A...395...97D. doi:10.1051/0004-6361:20021214. ISSN 0004-6361.


Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.

Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.

2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии