HD 73267
Observation data
Epoch J2000      Equinox J2000
Constellation Pyxis
Right ascension 08h 36m 17.77623s[1]
Declination −34° 27′ 35.9196″[1]
Apparent magnitude (V) 8.889[2]
Characteristics
Spectral type G5V[3]
Apparent magnitude (J) 7.493±0.023[4]
Apparent magnitude (H) 7.126±0.031[4]
Apparent magnitude (K) 7.062±0.023[4]
B−V color index 0.827±0.003[2]
Astrometry
Radial velocity (Rv)+51.836±0.0011[5] km/s
Proper motion (μ) RA: −106.336±0.012 mas/yr[1]
Dec.: 123.293±0.013 mas/yr[1]
Parallax (π)19.9362 ± 0.0130 mas[1]
Distance163.6 ± 0.1 ly
(50.16 ± 0.03 pc)
Absolute magnitude (MV)5.24[6]
Details[2]
Mass0.897±0.019 M☉
Radius0.909±0.033 R☉
Luminosity0.783±0.09[3] L☉
Surface gravity (log g)74.447±0.035 cgs
Temperature5,387±10 K
Metallicity [Fe/H]0.07±0.04 dex
Rotation~43 d
Rotational velocity (v sin i)1.65[3] km/s
Age8.140±3.505 Gyr
Other designations
CD−34°5039, HD 73267, HIP 42202, SAO 199418, PPM 285436, NLTT 19895, GSC 07144-01553, 2MASS J08361779-3427358[7]
Database references
SIMBADdata
Exoplanet Archivedata

HD 73267 is a star in the southern constellation Pyxis, near the western constellation border with Puppis. It has an apparent visual magnitude of 8.889[2] and can be viewed with a small telescope. The distance to HD 73267 is 164 light years based on parallax, and it is drifting further away with a radial velocity of +51.8 km/s.[5] It has an absolute magnitude of 5.24.[6]

This object is a G-type main-sequence star with a stellar classification of G5V.[3] It is roughly eight billion years old with a near-solar metallicity and is spinning with a projected rotational velocity of 1.65 km/s,[3] giving it a rotation period of around 33 days. The star has 90% of the mass and size of the Sun.[2] It is radiating 78%[3] of the Sun's luminosity from its photosphere at an effective temperature of 5387 K.[2]

Planetary system

In October 2008, a candidate planet was discovered orbiting this star. This object was detected using the radial velocity method by search programs conducted using the HARPS spectrograph.[3] Subsequent analysis of collected data suggests the presence of an additional long-period planet in the system with at least 83% of the mass of Jupiter.[2] In 2022, the inclination and true mass of HD 73267 b were measured, and the presence of a second planet was confirmed using a combination of radial velocity and astrometry.[8]

The HD 73267 planetary system[8]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(years)		 Eccentricity Inclination Radius
b 4.158+0.681
−0.519 MJ		 2.229+0.091
−0.100		 3.444+0.001
−0.002		 0.261±0.004 130.843+7.614
−7.660°		 —
c 5.131+0.912
−0.282 MJ		 12.688+0.631
−0.812		 46.740+2.150
−2.977		 0.089+0.023
−0.022		 91.849+18.586
−24.998°		 —

See also

References

  1. 1 2 3 4 5 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.
  2. 1 2 3 4 5 6 7 Barbato, D.; et al. (August 2018). "Exploring the realm of scaled solar system analogues with HARPS". Astronomy & Astrophysics. 615: 21. arXiv:1804.08329. Bibcode:2018A&A...615A.175B. doi:10.1051/0004-6361/201832791. S2CID 119099721. A175.
  3. 1 2 3 4 5 6 7 Moutou, C.; et al. (2009). "The HARPS search for southern extra-solar planets XVII. Six long-period giant planets around BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, HD 153950". Astronomy and Astrophysics. 496 (2): 513–519. arXiv:0810.4662. Bibcode:2009A&A...496..513M. doi:10.1051/0004-6361:200810941. S2CID 116707055.
  4. 1 2 3 Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
  5. 1 2 Soubiran, C.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars". Astronomy and Astrophysics. 616: A7. arXiv:1804.09370. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. S2CID 52952408.
  6. 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, S2CID 119257644
  7. ↑ "HD 73267". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-11-29.
  8. 1 2 Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
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