33 Boötis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.39[2] |
| Characteristics | |
| Spectral type | A1 V[3] |
| B−V Template:Engvar | Script error: No such module "val".[2] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: –67.247[1] mas/yr Dec.: −17.749[1] mas/yr |
| Parallax (π) | 17.3936±0.1330 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 1.61[2] |
| Details | |
| Mass | 2.25[4] Template:Solar mass |
| Luminosity | 20.94[2] Template:Solar luminosity |
| Surface gravity (log g) | 4.18[5] cgs |
| Temperature | Script error: No such module "val".[4] K |
| Rotational velocity (v sin i) | 86[4] km/s |
| Age | 142[4] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[6] | |
| Database references | |
| SIMBAD | data |
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33 Boötis is a single[7] star in the northern constellation Boötes, located 188 light years away from the Sun. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.39.[2] The object is moving closer to the Earth with a heliocentric radial velocity of −13 km/s,[2] and is catalogued as a member of the Pleiades supercluster.[8]
This is an ordinary A-type main-sequence star with a stellar classification of A1 V.[3] It is a source of X-ray emission, but early A-type stars are not expected to be an X-ray source so this may indicate it has an undetected companion.[9] 33 Boötis is 142[4] million years old with a projected rotational velocity of 86 km/s.[4] The star has 2.25[4] times the mass of the Sun and is radiating 21[2] times the luminosity of the Sun from its photosphere at an effective temperature of 10,176 K.[4]
References
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- ↑ a b c d e Template:Cite DR2
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- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d e f g h Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
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