HD 32515

Last updated
HD 32515
Observation data
Epoch J2000       Equinox J2000
Constellation Caelum
Right ascension 05h 02m 22.8045s [1]
Declination −31° 46′ 16.8028″ [1]
Apparent magnitude  (V)5.90 ± 0.01 [2]
Characteristics
Spectral type K2 III [3]
B−V color index +1.17 [4]
Astrometry
Radial velocity (Rv)29 ± 4 [5]  km/s
Proper motion (μ)RA: −6.866 [1]   mas/yr
Dec.: +84.982 [1]   mas/yr
Parallax (π)10.0579 ± 0.0324  mas [1]
Distance 324 ± 1  ly
(99.4 ± 0.3  pc)
Absolute magnitude  (MV)+0.91
Details
Mass 1.52 [6]   M☉
Radius 11.9 [1]   R☉
Luminosity 56.3+2.6
−2.5 [7]   L☉
Surface gravity (log g)2.44+0.11
−0.10 [8]   cgs
Temperature 4540 ± 100 [7]   K
Metallicity [Fe/H]0.00 [7]   dex
Rotational velocity (v sin i)1.4±1.2 [9]  km/s
Age 4.59 [6]   Gyr
Other designations
26 G. Caeli, CD−31° 2163, CPD−31° 684, GC  6169, HD  32515, HIP  23446, HR  1635, SAO  195509
Database references
SIMBAD data

HD 32515 (HR 1635) is a solitary star located in the southern constellation Caelum. It has an apparent magnitude of 5.9, [2] making it faintly visible to the naked eye under ideal conditions. The star is situated at a distance of 326 light years [1] but is recceding with a heliocentric radial velocity of 29.4  km/s . [5]

HD 32515 has a stellar classification of K2 III, [3] indicating that it is an early K-type giant star. HD 32515 has an angular diameter of 1.03±0.07  mas [10] (after limb darkening correction); this yields a diameter 11.9 times that of the Sun at its estimated distance. At present, it has 152% [6] of the Sun's mass and shines at 56.3 [7] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,540 K, [7] giving it an orange glow. HD 32515 has a similar metallicity [7] and age [6] to the Sun and spins slowly with a projected rotational velocity of 1.4  km/s

Related Research Articles

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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 yearsaway, the object is approaching the Solar System with a heliocentric radial velocity of −15 km/s.

<span class="mw-page-title-main">Iota Mensae</span> Star in the constellation Mensa

Iota Mensae is a single star about 880 light years away in the faint constellation Mensa. It has a very slightly variable apparent magnitude of 6.0, making it visible with the naked eye under good skies.

HD 50002 is a solitary star in the southern circumpolar constellation Volans. It is faintly visible to the naked eye with an apparent magnitude of 6.09 and is located at a distance of 708 light years. However, it is drifting further with a heliocentric radial velocity of 5.1 km/s.

HD 29559 is a solitary star in the southern constellation Caelum. It has an apparent magnitude of 6.40, placing it near the max naked eye visibility. The star is situated at a distance 408 light years based on parallax measurements but is receding with a heliocentric radial velocity of 24.2 km/s.

HD 60150 is a solitary star located in the southern circumpolar constellation Volans. It has an apparent magnitude of 6.39, placing it near the limit for naked eye visibility. Parallax measurements place the star at a distance of 738 light years and it is currently receding with a heliocentric radial velocity of 13.4 km/s.

<span class="mw-page-title-main">Eta Octantis</span> Star in the constellation of Octans

Eta Octantis, Latinized from η Octantis, is a solitary star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 6.19, making it faintly visible to the naked eye. The object is situated at a distance of 358 light years but is approaching the Solar System with a heliocentric radial velocity of −1.7 km/s.

HD 166006, also known as HR 6778, is a solitary orange-hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.07, making it barely visible to the naked eye. Based on Gaia DR2 parallax measurements, the object is located 582 light years away. It is currently approaching the Solar System with a somewhat constrained heliocentric radial velocity of −15 km/s.

HD 63584 is a solitary star in the southern circumpolar constellation Volans. With an apparent magnitude of 6.15, it is barely visible to the naked eye under ideal conditions. The star is located 420 light years away based on parallax, but is drifting away with a radial velocity of 10.4 km/s.

HD 30479 is a solitary star in the southern circumpolar constellation Mensa. It has an apparent magnitude of 6.04, making it barely visible to the naked eye even under ideal conditions. It is located at a distance of 540 light years but is receding with a heliocentric radial velocity of 10.3 km/s.

<span class="mw-page-title-main">Nu Mensae</span> Star in the constellation of Mensa

Nu Mensae, Latinized from ν Mensae, is a solitary star situated in the southern circumpolar constellation Mensa. It has an apparent magnitude of 5.76, making it faintly visible to the naked eye. The star is relatively close at a distance of 176 light years but is receding with a heliocentric radial velocity of 9.1 km/s.

HD 179886 is a binary star located in the southern constellation Telescopium. It has a combined apparent magnitude of 5.37, making it faintly visible to the naked eye if viewed under ideal conditions. The system is situated at a distance of 700 light years but is receding with a heliocentric radial velocity of 6.3 km/s.

HD 191829 is a solitary star located in the southern constellation Telescopium. It has an apparent magnitude of 5.632, making it faintly visible to the naked eye if viewed under ideal conditions. The star is situated at a distance of 710 light years but is receding with a heliocentric radial velocity of 14 km/s.

HR 2131 is a solitary star in the southern constellation Columba. It has an apparent magnitude of 5.52, allowing it to be faintly seen with the naked eye. The object is located at a distance of 670 light years but is receding with a heliocentric radial velocity of 19 km/s.

HD 193472 is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.94, making it visible with the naked eye if viewed under ideal conditions. Parallax measurements put it at a distance of 282 light years and has a radial velocity of −8 km/s, indicating that the object drifting towards the Solar System.

<span class="mw-page-title-main">HD 199223</span> Double star in the constellation Delphinus.

HD 199223 is a double star in the equatorial constellation Delphinus. However, the system was originally in Equuleus prior to the creation of official IAU constellation borders. The components have a separation of 2″ at a position angle of 282° as of 2016. They have apparent magnitudes of 6.34 and 7.49 and distances of 354 and 359 light years respectively. The system is drifting closer with a radial velocity of −33 km/s.

HD 120213 is a solitary star in the southern circumpolar constellation Chamaeleon. It is faintly visible to the naked eye with an apparent magnitude of 5.94 and is estimated to be 910 light years away from the Solar System. However, the object is drifting closer with a heliocentric radial velocity of −35 km/s.

HD 222806 is a suspected astrometric binary in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.74, allowing it to be faintly seen with the naked eye. Parallax measurements place the system at a distance of 565 light years and it is currently receding with a heliocentric radial velocity of 21 km/s.

HD 92209 is a probable spectroscopic binary in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude of 6.29, placing it near the max naked eye visibility. Parallax measurements place the system at a distance of 600 light years and is currently receding with a heliocentric radial velocity of almost 18 km/s.

HD 193721 is an astrometric binary in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.77, allowing it to be faintly seen with the naked eye. Parallax measurements place the system 760 light years away from the Solar System and it is currently receding with a heliocentric radial velocity 8.6 km/s.

References

  1. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics . arXiv: 2208.00211 . doi: 10.1051/0004-6361/202243940 . Gaia DR3 record for this source at VizieR.
  2. 1 2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (1 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. 1 2 Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40.0° to -26.0°. Bibcode:1982mcts.book.....H.
  4. ↑ 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.
  5. 1 2 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.
  6. 1 2 3 4 Luck, R. Earle (1 September 2015). "Abundances in the Local Region. I. G and K Giants". The Astronomical Journal. 150 (3): 88. arXiv: 1507.01466 . Bibcode:2015AJ....150...88L. doi:10.1088/0004-6256/150/3/88. ISSN   0004-6256. S2CID   118505114.
  7. 1 2 3 4 5 6 Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (1 January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy and Astrophysics. 633: A34. arXiv: 1910.12732 . Bibcode:2020A&A...633A..34C. doi:10.1051/0004-6361/201936360. ISSN   0004-6361. S2CID   204907220.
  8. ↑ Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevic, 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. (1 August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv: 1904.11302 . Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN   0004-6361. S2CID   131780028.
  9. ↑ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (1 January 2014). "A catalog of rotational and radial velocities for evolved stars. V. Southern stars". Astronomy and Astrophysics. 561: A126. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN   0004-6361. S2CID   54046583.
  10. ↑ Lafrasse, Sylvain; Mella, Guillaume; Bonneau, Daniel; Duvert, Gilles; Delfosse, Xavier; Chesneau, Olivier; Chelli, Alain (16 July 2010). "Building the 'JMMC Stellar Diameters Catalog' using SearchCal". Optical and Infrared Interferometry II. Vol. 7734. pp. 77344E. arXiv: 1009.0137 . Bibcode:2010SPIE.7734E..4EL. doi:10.1117/12.857024. S2CID   32097037.
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