HD 28454

HD 28454
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Caelum
Right ascension 04h 27m 05.96464s
Declination −46° 56′ 50.9697″
Apparent magnitude (V) 6.10
Characteristics
Evolutionary stage main sequence
Spectral type F5.5 V
U−B color index −0.07
B−V color index +0.48
Astrometry
Radial velocity (Rv)15±2.4 km/s
Proper motion (μ) RA: +63.853 mas/yr
Dec.: −270.620 mas/yr
Parallax (π)30.6049±0.0259 mas
Distance106.57 ± 0.09 ly
(32.67 ± 0.03 pc)
Absolute magnitude (MV)+3.5
Details
Mass1.24 M☉
Radius1.42±0.06 R☉
Luminosity3.26±0.01 L☉
Surface gravity (log g)4.30 ± 0.14 cgs
Temperature6,468±80 K
Metallicity [Fe/H]−0.25±0.10 dex
Rotation14.810 days
Rotational velocity (v sin i)8 km/s
Age1.61 Gyr
Other designations
3 G. Caeli, CD−47°1383, CPD−47°441, FK5 2329, GC 5428, HD 28454, HIP 20781, HR 1418, SAO 216809
Database references
SIMBADdata

HD 28454, also known as HR 1418, is a solitary, yellowish-white hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.1, making it faintly visible to the naked eye under ideal conditions. This star is located relatively close at a distance of about 107 light years based on parallax measurements of Gaia DR3 but is receding with a heliocentric radial velocity of 15 km/s.

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

HD 28454 is an ordinary F-type main sequence star with a stellar classification of F5.5 V. It has 1.21 times the mass of the Sun and 1.42 times its radius. It radiates 3.26 times the luminosity of the Sun from its photosphere at an effective temperature of 6,468 K. HD 28454 is estimated to be 1.61 billion years, and spins modestly with a projected rotational velocity of 8 km/s. The star is metal deficient, having an iron abundance 56% that of the Sun's.

A candidate extrasolar planet has been detected from Gaia DR3 astrometry. It has a minimum mass of 8 MJ and a minimum semi-major axis of 2.27 astronomical units.

The HD 28454 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination
(°)		 Radius
b (unconfirmed) ≥8.0 MJ ≥2.27 — — — —

References

  1. 1 2 3 4 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.
  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.
  3. 1 2 Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2 June 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. eISSN 1538-3881. ISSN 0004-6256.
  4. 1 2 Mermilliod, J. -C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data: 0. Bibcode:1986EgUBV........0M.
  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. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
  6. 1 2 3 4 Bressan, Alessandro; Marigo, Paola; Girardi, Léo; Salasnich, Bernardo; Dal Cero, Claudia; Rubele, Stefano; Nanni, Ambra (21 November 2012). "parsec : stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code: parsec : tracks and isochrones". Monthly Notices of the Royal Astronomical Society. 427 (1): 127–145. arXiv:1208.4498. Bibcode:2012MNRAS.427..127B. doi:10.1111/j.1365-2966.2012.21948.x. ISSN 1365-2966.
  7. 1 2 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. eISSN 1538-3881.
  8. ↑ David, Trevor J.; Hillenbrand, Lynne A. (12 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. eISSN 1538-4357.
  9. 1 2 Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (26 May 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s): Improved astrophysical parameters for the Geneva-Copenhagen Survey⋆". Astronomy & Astrophysics. 530: A138. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. eISSN 1432-0746. ISSN 0004-6361.
  10. 1 2 Netopil, Martin (August 2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv:1705.00883. Bibcode:2017MNRAS.469.3042N. doi:10.1093/mnras/stx1077. ISSN 1365-2966.
  11. ↑ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G.; Siverd, Robert J.; Lund, Michael B.; Kuhn, Rudolf B.; James, David; Gaudi, B. Scott (2018). "Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey". The Astronomical Journal. 155 (1): 39. arXiv:1711.03608. Bibcode:2018AJ....155...39O. doi:10.3847/1538-3881/aa9bf4.
  12. 1 2 Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv:astro-ph/0405198. Bibcode:2004A&A...418..989N. doi:10.1051/0004-6361:20035959. eISSN 1432-0746. ISSN 0004-6361.
  13. ↑ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
  14. ↑ "HD 28454". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 3, 2022.
  15. ↑ E-Rara.ch, 2026
  16. 1 2 Kiefer, F.; Lagrange, A.-M.; Rubini, P.; Philipot, F. (October 2025). "Searching for substellar companion candidates with Gaia: II. A catalog of 9698 planet candidate solar-type hosts". Astronomy and Astrophysics. 702: A77. arXiv:2409.16993. Bibcode:2025A&A...702A..77K. doi:10.1051/0004-6361/202451745. ISSN 0004-6361. HD 28454's database entry at VizieR.