Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Ara [1] |
Right ascension | 16h 53m 05.755s [2] |
Declination | –46° 19′ 58.64″ [2] |
Apparent magnitude (V) | 9.18 [1] |
Characteristics | |
Spectral type | G6V [3] |
Apparent magnitude (B) | 9.891 [1] |
Apparent magnitude (J) | 7.984±0.021 [1] |
Apparent magnitude (H) | 7.656±0.031 [1] |
Apparent magnitude (K) | 7.634±0.021 [1] |
B−V color index | 0.711±0.025 [1] |
Astrometry | |
Radial velocity (Rv) | −21.338±0.0007 [4] km/s |
Proper motion (μ) |
RA: −107.358
mas/
yr
[2] Dec.: −93.597 mas/ yr [2] |
Parallax (π) | 11.3545 ± 0.0142 mas [2] |
Distance | 287.2 ± 0.4
ly (88.1 ± 0.1 pc) |
Absolute magnitude (MV) | 4.62 [1] |
Details | |
Mass | 1.147±0.030 [5] M☉ |
Radius | 1.128±0.074 [5] R☉ |
Luminosity | 1.443 [6] L☉ |
Surface gravity (log g) | 4.365±0.054 [5] cgs |
Temperature | 5,907±52 [5] K |
Metallicity [Fe/H] | 0.29±0.07 [5] dex |
Rotational velocity (v sin i) | 2.6 [6] km/s |
Age | 6.2 Gyr
[6] 1.622±1.369 [5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
HD 152079 is a star with an orbiting exoplanet in the southern constellation of Ara. It is located at a distance of 287 light years from the Sun based on parallax measurements, [2] but is drifting closer with a radial velocity of −21 km/s. [4] At that distance the star is much too faint to be visible with the naked eye, having an apparent visual magnitude of 9.18. [1]
This is a G-type main-sequence star [8] with a stellar classification of G6V. [3] Age estimates range from 1.6 [5] to 6.2 [6] billion years. It has 1.15 times the mass of the Sun and 1.13 times the Sun's girth. This is a metal-rich star, having a higher iron abundance than in the Sun. [5] The star is radiating 1.44 [6] times the luminosity of the Sun from its photosphere at an effective temperature of 5,907 K. [5]
It has one confirmed exoplanet, discovered in 2010 by the Magellan Planet Search Program. This is a super-jovian object with an eccentric orbit and a 8.0 yr orbital period. [8] In 2018, an analysis of HARPS data suggested the presence of an additional outer companion with a mass at least 83% of the mass of Jupiter. [5]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥ 2.661±0.046 MJ | 4.187+0.051 −0.053 |
2,918.92+37.87 −39.28 |
0.532+0.015 −0.016 |
— | — |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Ara [1] |
Right ascension | 16h 53m 05.755s [2] |
Declination | –46° 19′ 58.64″ [2] |
Apparent magnitude (V) | 9.18 [1] |
Characteristics | |
Spectral type | G6V [3] |
Apparent magnitude (B) | 9.891 [1] |
Apparent magnitude (J) | 7.984±0.021 [1] |
Apparent magnitude (H) | 7.656±0.031 [1] |
Apparent magnitude (K) | 7.634±0.021 [1] |
B−V color index | 0.711±0.025 [1] |
Astrometry | |
Radial velocity (Rv) | −21.338±0.0007 [4] km/s |
Proper motion (μ) |
RA: −107.358
mas/
yr
[2] Dec.: −93.597 mas/ yr [2] |
Parallax (π) | 11.3545 ± 0.0142 mas [2] |
Distance | 287.2 ± 0.4
ly (88.1 ± 0.1 pc) |
Absolute magnitude (MV) | 4.62 [1] |
Details | |
Mass | 1.147±0.030 [5] M☉ |
Radius | 1.128±0.074 [5] R☉ |
Luminosity | 1.443 [6] L☉ |
Surface gravity (log g) | 4.365±0.054 [5] cgs |
Temperature | 5,907±52 [5] K |
Metallicity [Fe/H] | 0.29±0.07 [5] dex |
Rotational velocity (v sin i) | 2.6 [6] km/s |
Age | 6.2 Gyr
[6] 1.622±1.369 [5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
HD 152079 is a star with an orbiting exoplanet in the southern constellation of Ara. It is located at a distance of 287 light years from the Sun based on parallax measurements, [2] but is drifting closer with a radial velocity of −21 km/s. [4] At that distance the star is much too faint to be visible with the naked eye, having an apparent visual magnitude of 9.18. [1]
This is a G-type main-sequence star [8] with a stellar classification of G6V. [3] Age estimates range from 1.6 [5] to 6.2 [6] billion years. It has 1.15 times the mass of the Sun and 1.13 times the Sun's girth. This is a metal-rich star, having a higher iron abundance than in the Sun. [5] The star is radiating 1.44 [6] times the luminosity of the Sun from its photosphere at an effective temperature of 5,907 K. [5]
It has one confirmed exoplanet, discovered in 2010 by the Magellan Planet Search Program. This is a super-jovian object with an eccentric orbit and a 8.0 yr orbital period. [8] In 2018, an analysis of HARPS data suggested the presence of an additional outer companion with a mass at least 83% of the mass of Jupiter. [5]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥ 2.661±0.046 MJ | 4.187+0.051 −0.053 |
2,918.92+37.87 −39.28 |
0.532+0.015 −0.016 |
— | — |