HD 32453

HD 32453
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Caelum
Right ascension	05h 01m 34.5224s
Declination	−39° 43′ 04.967″
Apparent magnitude (V)	6.01±0.01
Characteristics
Evolutionary stage	red giant branch
Spectral type	G8 III
B−V color index	+0.88
Astrometry
Radial velocity (Rv)	5.52±0.12 km/s
Proper motion (μ)	RA: −5.335 mas/yr ; Dec.: +32.895 mas/yr
Parallax (π)	8.0408±0.0210 mas
Distance	406 ± 1 ly ; (124.4 ± 0.3 pc)
Absolute magnitude (MV)	+0.78
Details
Mass	2.40 M☉
Radius	9.73 R☉
Luminosity	50.1 L☉
Surface gravity (log g)	3.18±0.14 cgs
Temperature	5,032±61 K
Metallicity [Fe/H]	−0.02±0.13 dex
Rotational velocity (v sin i)	2±1.4 km/s
Age	700 Myr
Other designations
	CD−39°1744, HD 32453, HIP 23377, HR 1631, SAO 195501
Database references
SIMBAD	data

HD 32453 (HR 1631) is a solitary star located in the southern constellation Caelum. With an apparent magnitude of 6.01, it's barely visible to the naked eye under ideal conditions. This star is located 406 light years away based on its parallax shift, but is drifting away at a rate of 5.52 km/s.

This star was designated Epsilon Caeli by Johann Elert Bode in his 1801 Uranographia, but this is now no longer used.

HD 32453 has a classification of G8 III, which states it is an evolved G-type star that exhausted hydrogen at its core and left the main sequence. At present it has 2.40 times the Sun's mass, but at an age of 700 million years, HD 32453 has expanded to 9.7 times the latter's girth. It radiates at 50 solar luminosities from its enlarged photosphere at an effective temperature of 5,032 K, which gives it a yellow hue. HD 32453 is slightly metal deficient, and spins slowly with a projected rotational velocity of 2 km/s, common for a giant star.

References

1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
1 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.
1 2 Houk, N. (1 January 1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40_ƒ0 to -26_ƒ0. Bibcode:1982mcts.book.....H.
↑ Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1 January 1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
1 2 3 Demarque, Pierre; Woo, Jong-Hak; Kim, Yong-Cheol; Yi, Sukyoung K. (December 2004). "Y 2 Isochrones with an Improved Core Overshoot Treatment". The Astrophysical Journal Supplement Series. 155 (2): 667–674. arXiv:astro-ph/0409024. Bibcode:2004ApJS..155..667D. doi:10.1086/424966. ISSN 1538-4357.
1 2 3 Stassun, Keivan G.; et al. (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.
1 2 3 4 Luck, R. Earle (25 August 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 1538-3881.
1 2 3 Alves, S.; Benamati, L.; Santos, N. C.; Adibekyan, V. Zh.; Sousa, S. G.; Israelian, G.; De Medeiros, J. R.; Lovis, C.; Udry, S. (11 April 2015). "Determination of the spectroscopic stellar parameters for 257 field giant stars★". Monthly Notices of the Royal Astronomical Society. 448 (3): 2749–2765. arXiv:1503.02556. Bibcode:2015MNRAS.448.2749A. doi:10.1093/mnras/stv189. ISSN 1365-2966.
1 2 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars: V. Southern stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN 1432-0746.
↑ E-Rara.ch, 2026

[Anderson2012-1] 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.

[GaiaDR3-2] 1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[Tycho2000-3] 1 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.

[Houk1982-4] 1 2 Houk, N. (1 January 1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40_ƒ0 to -26_ƒ0. Bibcode:1982mcts.book.....H.

[Johnson1966-5] Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1 January 1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.

[Dermarque2004-6] 1 2 3 Demarque, Pierre; Woo, Jong-Hak; Kim, Yong-Cheol; Yi, Sukyoung K. (December 2004). "Y 2 Isochrones with an Improved Core Overshoot Treatment". The Astrophysical Journal Supplement Series. 155 (2): 667–674. arXiv:astro-ph/0409024. Bibcode:2004ApJS..155..667D. doi:10.1086/424966. ISSN 1538-4357.

[tic-7] 1 2 3 Stassun, Keivan G.; et al. (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.

[Luck2015-8] 1 2 3 4 Luck, R. Earle (25 August 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 1538-3881.

[Alves2015-9] 1 2 3 Alves, S.; Benamati, L.; Santos, N. C.; Adibekyan, V. Zh.; Sousa, S. G.; Israelian, G.; De Medeiros, J. R.; Lovis, C.; Udry, S. (11 April 2015). "Determination of the spectroscopic stellar parameters for 257 field giant stars★". Monthly Notices of the Royal Astronomical Society. 448 (3): 2749–2765. arXiv:1503.02556. Bibcode:2015MNRAS.448.2749A. doi:10.1093/mnras/stv189. ISSN 1365-2966.

[DeMed2014-10] 1 2 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars: V. Southern stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN 1432-0746.

[bode-11] E-Rara.ch, 2026