Astronomy:HD 28454

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Short description: Star in the constellation of Caelum
HD 28454
Observation data
Equinox J2000.0]] (ICRS)
Constellation Caelum[1]
Right ascension  04h 27m 05.96464s[2]
Declination −46° 56′ 50.9697″[2]
Apparent magnitude (V) 6.10[1]
Characteristics
Evolutionary stage main sequence[2]
Spectral type F5.5 V[3]
U−B color index −0.07[4]
B−V color index +0.48[4]
Astrometry
Radial velocity (Rv)15±2.4[5] km/s
Proper motion (μ) RA: +63.853[2] mas/yr
Dec.: −270.620[2] mas/yr
Parallax (π)30.6049 ± 0.0259[2] mas
Distance106.57 ± 0.09 ly
(32.67 ± 0.03 pc)
Absolute magnitude (MV)+3.5[1]
Details
Mass1.24[6] M☉
Radius1.42±0.06[7] R☉
Luminosity3.26±0.01[2] L☉
Surface gravity (log g)4.30 ± 0.14[8] cgs
Temperature6,468±80[9] K
Metallicity [Fe/H]−0.25±0.10[10] dex
Rotation14.810 days[11]
Rotational velocity (v sin i)8[12] km/s
Age1.61[6] Gyr
Other designations
CD−47°1383, CPD−47°441, FK5 2329, GC 5428, HD 28454, HIP 20781, HR 1418, SAO 216809[13]
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,[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.[5]

HD 28454 is an ordinary F-type main sequence star with a stellar classification of F5.5 V.[3] It has 1.21 times the mass of the Sun[6] and 1.42 times its radius.[7] It radiates 3.26 times the luminosity of the Sun[2] from its photosphere at an effective temperature of 6,468 K.[9] HD 28454 is estimated to be 1.61 billion years,[6] and spins modestly with a projected rotational velocity of 8 km/s.[12] The star is metal deficient, having an iron abundance 56% that of the Sun's.[10]

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.[14]

The HD 28454 planetary system[14]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius

Template:Orbitbox planet hypothetical

References

  1. ↑ 1.0 1.1 1.2 1.3 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A  XHIP record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 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. doi:10.1086/504637. ISSN 0004-6256. Bibcode: 2006AJ....132..161G. 
  4. ↑ 4.0 4.1 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. ↑ 5.0 5.1 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. doi:10.1134/S1063773706110065. ISSN 1063-7737. Bibcode: 2006AstL...32..759G. 
  6. ↑ 6.0 6.1 6.2 6.3 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. doi:10.1111/j.1365-2966.2012.21948.x. ISSN 1365-2966. Bibcode: 2012MNRAS.427..127B. 
  7. ↑ 7.0 7.1 Stassun, Keivan G. et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  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. doi:10.1088/0004-637X/804/2/146. Bibcode: 2015ApJ...804..146D. 
  9. ↑ 9.0 9.1 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. doi:10.1051/0004-6361/201016276. ISSN 0004-6361. Bibcode: 2011A&A...530A.138C. 
  10. ↑ 10.0 10.1 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. doi:10.1093/mnras/stx1077. ISSN 1365-2966. Bibcode: 2017MNRAS.469.3042N. 
  11. ↑ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G. et al. (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. doi:10.3847/1538-3881/aa9bf4. Bibcode: 2018AJ....155...39O. 
  12. ↑ 12.0 12.1 Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S. et al. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics 418 (3): 989–1019. doi:10.1051/0004-6361:20035959. ISSN 0004-6361. Bibcode: 2004A&A...418..989N. 
  13. ↑ "HD 28454". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+28454. 
  14. ↑ 14.0 14.1 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" (in en). Astronomy and Astrophysics 702: A77. doi:10.1051/0004-6361/202451745. ISSN 0004-6361. Bibcode: 2025A&A...702A..77K.  HD 28454's database entry at VizieR.
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