Astronomy:HD 73267
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[1] mas/yr Dec.: 123.293±0.013[1] mas/yr |
| Parallax (π) | 19.9362 ± 0.0130[1] mas |
| Distance | 163.6 ± 0.1 ly (50.16 ± 0.03 pc) |
| Absolute magnitude (MV) | 5.24[6] |
| Details[2] | |
| Mass | 0.897±0.019 M☉ |
| Radius | 0.909±0.033 R☉ |
| Luminosity | 0.783±0.09[3] L☉ |
| Surface gravity (log g) | 74.447±0.035 cgs |
| Temperature | 5,387±10 K |
| Metallicity [Fe/H] | 0.07±0.04 dex |
| Rotation | ~43 d |
| Rotational velocity (v sin i) | 1.65[3] km/s |
| Age | 8.140±3.505 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
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]
| 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
- List of extrasolar planets
References
- ↑ 1.0 1.1 1.2 1.3 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.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Barbato, D. et al. (August 2018). "Exploring the realm of scaled solar system analogues with HARPS". Astronomy & Astrophysics 615: 21. doi:10.1051/0004-6361/201832791. A175. Bibcode: 2018A&A...615A.175B.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 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. doi:10.1051/0004-6361:200810941. Bibcode: 2009A&A...496..513M. http://www.aanda.org/articles/aa/full_html/2009/11/aa10941-08/aa10941-08.html.
- ↑ 4.0 4.1 4.2 Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E. et al. (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. http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=II/246.
- ↑ 5.0 5.1 Soubiran, C. et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars". Astronomy and Astrophysics 616: A7. doi:10.1051/0004-6361/201832795. Bibcode: 2018A&A...616A...7S.
- ↑ 6.0 6.1 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A
- ↑ "HD 73267". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+73267.
- ↑ 8.0 8.1 Feng, Fabo et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series 262 (21): 21. doi:10.3847/1538-4365/ac7e57. Bibcode: 2022ApJS..262...21F.
External links
Coordinates: 
08h 36m 17.776s, −34° 27′ 35.92″
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