HD 175541
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 8.02[1] |
| Characteristics | |
| Spectral type | G6/8IV[3] |
| U−B Template:Engvar | 0.56 |
| B−V Template:Engvar | Script error: No such module "val".[1] |
| R−I Template:Engvar | 0.33 |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: Script error: No such module "val". mas/yr[2] Dec.: Script error: No such module "val". mas/yr[2] |
| Parallax (π) | 7.6470±0.0255 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 2.54[1] |
| Details | |
| Mass | Script error: No such module "val".[4] Template:Solar mass |
| Radius | Script error: No such module "val".[4] Template:Solar radius |
| Luminosity | Script error: No such module "val".[4] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[4] cgs |
| Temperature | Script error: No such module "val".[4] K |
| Metallicity [Fe/H] | Script error: No such module "val".[5] dex |
| Rotational velocity (v sin i) | Script error: No such module "val".[5] km/s |
| Age | Script error: No such module "val".[4] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[6] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
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HD 175541 is an 8th magnitude star with an exoplanetary companion in the constellation Serpens. It has the proper name Kaveh, which was selected by Iran during the NameExoWorlds campaign as part of the 100th anniversary of the IAU. Kaveh is one of the heroes of Shahnameh.[7][8] The apparent visual magnitude of 8.02[1] is too faint for this star to be visible in the naked eye. It is located at a distance of approximately 427 light-years from the Sun based on parallax measurements, and is drifting further away with a radial velocity of +20 km/s.[2] Despite its distance, it was given the number 736 in the Gliese Catalogue of Nearby Stars.[6]
This is an evolved G-type star with a stellar classification of G6/8IV.[3] The absolute magnitude of 2.54[1] places it 3.5 magnitudes above the comparable main sequence stars in the Sun's neighborhood, indicating that it is on the subgiant branch. When this intermediate-mass star was on the main-sequence, it was an A-type star.[9] It is around three[4] billion years old and is chromospherically inactive[9] with low a projected rotational velocity of 0.5 km/s.[5] The star has 1.45 times the mass and has expanded to 4.1 times the radius of the Sun. It is radiating ten times the luminosity of the Sun from its photosphere at an effective temperature of 5,093 K.[4]
In April 2007, a Jovian planet was found orbiting this star using the radial velocity method, from Lick and Keck Observatories in Mount Hamilton (California) and Mauna Kea (Hawai'i), United States.[9]
Template:OrbitboxPlanet begin Template:OrbitboxPlanet
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See also
References
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