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]
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] |
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 |
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]
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° |
— |