Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Musca |
Right ascension | 12h 57m 31.95991s [1] |
Declination | −65° 38′ 47.2594″ [1] |
Apparent magnitude (V) | 6.86 [2] |
Characteristics | |
Evolutionary stage | red giant branch |
Spectral type | G8III [3] |
B−V color index | 1.018±0.008 [2] |
Astrometry | |
Radial velocity (Rv) | 72.82±0.15 [1] km/s |
Proper motion (μ) |
RA: −65.486±0.043
[1]
mas/
yr Dec.: +31.269±0.038 [1] mas/ yr |
Parallax (π) | 6.3628 ± 0.0284 mas [1] |
Distance | 513 ± 2
ly (157.2 ± 0.7 pc) |
Absolute magnitude (MV) | 1.22 [2] |
Details [4] | |
Mass | 1.21±0.25
[4] 1.54±0.05 [5] 2.32±0.23 [6] M☉ |
Radius | 10.28+0.11 −0.17 [1] R☉ |
Luminosity | 50.5±0.4 [1] L☉ |
Surface gravity (log g) | 2.49±0.06 cgs |
Temperature | 4,793±22 K |
Metallicity [Fe/H] | −0.28±0.05 dex |
Rotational velocity (v sin i) | 3.29±0.47 km/s |
Age | 4.17±2.34 Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 112410 is a star in the southern constellation of Musca. It has a yellow hue and is too dim to be readily visible to the average sight, having an apparent visual magnitude of 6.86. [2] The distance to this star is 513 light years based on parallax, and it is drifting further away from the Sun with a radial velocity of 73 km/s. [1] It has an absolute magnitude of 1.22. [2]
This is an aging giant star with a stellar classification of G8III. [3] It is cooling and expanding along the red giant branch, [5] having evolved off the main sequence after exhausting its core supply of hydrogen fuel. At present it has 10 [1] times the Sun's radius. Mass estimates range from 1.21 [4] up to 2.32 [6] times the mass of the Sun. The star has a lower metallicity the Sun – what astronomers term the abundance of elements with more mass than helium – and it is spinning with a projected rotational velocity of 3.3 km/s. [4] It is radiating 50.5 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,793 K. [4]
HD 112410 has a substellar companion calculated to have a mass at least 9.2 times that of Jupiter and an orbital period of 124.6 days at a typical separation of approximately 0.57 astronomical units (AU). As of 2013, this is the nearest exoplanet orbiting around any ascending red giant branch star, and second-closest planet to a giant star after the companion of HIP 13044. [5]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
HD 112410 b | >9.18 MJ | 0.565 | 124.6 | 0.23 | — | — |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Musca |
Right ascension | 12h 57m 31.95991s [1] |
Declination | −65° 38′ 47.2594″ [1] |
Apparent magnitude (V) | 6.86 [2] |
Characteristics | |
Evolutionary stage | red giant branch |
Spectral type | G8III [3] |
B−V color index | 1.018±0.008 [2] |
Astrometry | |
Radial velocity (Rv) | 72.82±0.15 [1] km/s |
Proper motion (μ) |
RA: −65.486±0.043
[1]
mas/
yr Dec.: +31.269±0.038 [1] mas/ yr |
Parallax (π) | 6.3628 ± 0.0284 mas [1] |
Distance | 513 ± 2
ly (157.2 ± 0.7 pc) |
Absolute magnitude (MV) | 1.22 [2] |
Details [4] | |
Mass | 1.21±0.25
[4] 1.54±0.05 [5] 2.32±0.23 [6] M☉ |
Radius | 10.28+0.11 −0.17 [1] R☉ |
Luminosity | 50.5±0.4 [1] L☉ |
Surface gravity (log g) | 2.49±0.06 cgs |
Temperature | 4,793±22 K |
Metallicity [Fe/H] | −0.28±0.05 dex |
Rotational velocity (v sin i) | 3.29±0.47 km/s |
Age | 4.17±2.34 Myr |
Other designations | |
Database references | |
SIMBAD | data |
HD 112410 is a star in the southern constellation of Musca. It has a yellow hue and is too dim to be readily visible to the average sight, having an apparent visual magnitude of 6.86. [2] The distance to this star is 513 light years based on parallax, and it is drifting further away from the Sun with a radial velocity of 73 km/s. [1] It has an absolute magnitude of 1.22. [2]
This is an aging giant star with a stellar classification of G8III. [3] It is cooling and expanding along the red giant branch, [5] having evolved off the main sequence after exhausting its core supply of hydrogen fuel. At present it has 10 [1] times the Sun's radius. Mass estimates range from 1.21 [4] up to 2.32 [6] times the mass of the Sun. The star has a lower metallicity the Sun – what astronomers term the abundance of elements with more mass than helium – and it is spinning with a projected rotational velocity of 3.3 km/s. [4] It is radiating 50.5 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,793 K. [4]
HD 112410 has a substellar companion calculated to have a mass at least 9.2 times that of Jupiter and an orbital period of 124.6 days at a typical separation of approximately 0.57 astronomical units (AU). As of 2013, this is the nearest exoplanet orbiting around any ascending red giant branch star, and second-closest planet to a giant star after the companion of HIP 13044. [5]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
HD 112410 b | >9.18 MJ | 0.565 | 124.6 | 0.23 | — | — |