Beta Horologii
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Horologium |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 4.979[2] |
| Characteristics | |
| Spectral type | A3/5 III(m)[3] |
| U−B Template:Engvar | +0.15[4] |
| B−V Template:Engvar | +0.13[4] |
| R−I Template:Engvar | +0.05[4] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[5] km/s |
| Proper motion (μ) | RA: 22.074 ± 0.294[6] mas/yr Dec.: 5.825 ± 0.287[6] mas/yr |
| Parallax (π) | 10.4568±0.1427 mas[6] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | +0.20[7] |
| Details | |
| Radius | 1.40[8] Template:Solar radius |
| Luminosity | 63[9] Template:Solar luminosity |
| Temperature | 8,303[9] K |
| Rotational velocity (v sin i) | 115[10] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[2] | |
| Database references | |
| SIMBAD | data |
Script error: No such module "Check for unknown parameters".
Beta Horologii, Latinized from β Horologii, is the third-brightest star in the southern constellation of Horologium. It is faintly visible to the naked eye with an apparent visual magnitude of 4.98.[2] Based upon an annual parallax shift of 11.07 mas as seen from Earth,[2] it is located about 295 light years from the Sun. The star is moving away with a radial velocity of +24 km/s.[5]
This is a solitary,[11] A-type giant with a stellar classification of A3/5 III(m).[3] It is a suspected chemically peculiar star of the metallic-line type.[12] Beta Horologii has a relatively high rate of spin with a projected rotational velocity of 115 km/s, giving it an oblate shape with an equatorial bulge that is an estimated 10% wider compared to the polar radius.[10] It has about 1.40[8] times the radius of the Sun and is radiating 63[9] times the Sun's luminosity from its photosphere at an effective temperature of 8,303 K.[9]
References
<templatestyles src="Reflist/styles.css" />
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d Template:Cite simbad
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c HR 909, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 18, 2008.
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c Template:Cite DR2
- ↑ Script error: No such module "citation/CS1".
- ↑ a b HD 18866, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line September 18, 2008.
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
Script error: No such module "Check for unknown parameters".
External links
- Jim Kaler's Stars, University of Illinois: BETA HOR(Beta Horologii)