Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 46m 22.1179s [1] |
Declination | +49° 39′ 11.0949″ [1] |
Apparent magnitude (V) | 7.73 [2] |
Characteristics | |
Evolutionary stage | Giant [2] |
Spectral type | K0III [3] |
B−V color index | 1.247±0.014 [4] |
Astrometry | |
Radial velocity (Rv) | 5.49±0.03 [5] km/s |
Proper motion (μ) |
RA: 40.328±0.100
[1]
mas/
yr Dec.: −10.312±0.099 [1] mas/ yr |
Parallax (π) | 4.3499 ± 0.0516 mas [1] |
Distance | 750 ± 9
ly (230 ± 3 pc) |
Absolute magnitude (MV) | +1.76 [4] |
Details [6] | |
Mass | 1.23±0.18 M☉ |
Radius | 12.04+0.51 −0.35 [1] R☉ |
Luminosity | 57±1 [1] L☉ |
Surface gravity (log g) | 2.47±0.11 cgs |
Temperature | 4,630±30 K |
Metallicity [Fe/H] | 0.11±0.05 dex |
Rotation | 505 days [4] |
Rotational velocity (v sin i) | <1 km/s |
Age | 5.82±2.75 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 17092 is a star in the constellation of Perseus. It has an orange hue but is visible only with binoculars or better equipment, having an apparent visual magnitude of 7.73. [2] The distance to this star is approximately 750 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +5.5 km/s. [5]
This object is an aging giant star with a stellar classification of K0III, [3] which means it has exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. [4] It is roughly six billion years old with 1.2 [6] times the mass of the Sun and has expanded to 12 times the Sun's radius. [1] The star is radiating 57 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,630 K. [6]
On 6 May 2007, a planet HD 17092 b was discovered with the Hobby-Eberly Telescope by Niedzielski who used the wobble method. This planet is a massive gas giant and orbits at 1.29 astronomical units from the star with a period of about 360 days. [4]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥4.6±0.3 MJ | 1.29±0.05 | 359.9±2.4 | 0.166±0.052 | — | — |
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 46m 22.1179s [1] |
Declination | +49° 39′ 11.0949″ [1] |
Apparent magnitude (V) | 7.73 [2] |
Characteristics | |
Evolutionary stage | Giant [2] |
Spectral type | K0III [3] |
B−V color index | 1.247±0.014 [4] |
Astrometry | |
Radial velocity (Rv) | 5.49±0.03 [5] km/s |
Proper motion (μ) |
RA: 40.328±0.100
[1]
mas/
yr Dec.: −10.312±0.099 [1] mas/ yr |
Parallax (π) | 4.3499 ± 0.0516 mas [1] |
Distance | 750 ± 9
ly (230 ± 3 pc) |
Absolute magnitude (MV) | +1.76 [4] |
Details [6] | |
Mass | 1.23±0.18 M☉ |
Radius | 12.04+0.51 −0.35 [1] R☉ |
Luminosity | 57±1 [1] L☉ |
Surface gravity (log g) | 2.47±0.11 cgs |
Temperature | 4,630±30 K |
Metallicity [Fe/H] | 0.11±0.05 dex |
Rotation | 505 days [4] |
Rotational velocity (v sin i) | <1 km/s |
Age | 5.82±2.75 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 17092 is a star in the constellation of Perseus. It has an orange hue but is visible only with binoculars or better equipment, having an apparent visual magnitude of 7.73. [2] The distance to this star is approximately 750 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +5.5 km/s. [5]
This object is an aging giant star with a stellar classification of K0III, [3] which means it has exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. [4] It is roughly six billion years old with 1.2 [6] times the mass of the Sun and has expanded to 12 times the Sun's radius. [1] The star is radiating 57 [1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,630 K. [6]
On 6 May 2007, a planet HD 17092 b was discovered with the Hobby-Eberly Telescope by Niedzielski who used the wobble method. This planet is a massive gas giant and orbits at 1.29 astronomical units from the star with a period of about 360 days. [4]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥4.6±0.3 MJ | 1.29±0.05 | 359.9±2.4 | 0.166±0.052 | — | — |