HD 30453
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 5.86[3] |
| Characteristics | |
| Spectral type | A8m[4] or Am(A7/F0/F2)[5] |
| U−B Template:Engvar | +0.14[3] |
| B−V Template:Engvar | +0.24[3] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[6] km/s |
| Proper motion (μ) | RA: +18.324 mas/yr[2] Dec.: −34.866 mas/yr[2] |
| Parallax (π) | 9.7628±0.1172 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 1.23[1] |
| Orbit[6] | |
| Period (P) | Script error: No such module "val". |
| Semi-major axis (a) | Script error: No such module "val". |
| Eccentricity (e) | 0.0 (adopted) |
| Periastron epoch (T) | Script error: No such module "val". |
| Semi-amplitude (K1) (primary) | Script error: No such module "val". km/s |
| Semi-amplitude (K2) (secondary) | Script error: No such module "val". km/s |
| Details | |
| Radius | Script error: No such module "val".[2] Template:Solar radius |
| Luminosity | Script error: No such module "val".[2] Template:Solar luminosity |
| Temperature | Script error: No such module "val".[2] K |
| Rotational velocity (v sin i) | Script error: No such module "val".[7] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[8] | |
| Database references | |
| SIMBAD | data |
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HD 30453 is a binary star[9] system in the northern constellation of Auriga. It is visible to the naked eye with an apparent visual magnitude of 5.86.[3] The system is located at a distance of approximately 334 light years from the Sun based on parallax.[2] It is drifting further away from the Sun with a radial velocity of 16.65 km/s.[6]
This is a double-lined spectroscopic binary system with an essentially circular orbit and a period of one week.[6] The primary component is a chemically peculiar star of type CP1,[7] or Am star, with a stellar classification of A8m.[4] Abt and Morrell (1995) classed it as Am(A7/F0/F2),[5] indicating it has the hydrogen lines of an A7 star, the calcium K line of a cooler F0 star, and the metallic lines of an F2 class. It has been mentioned as a potential variable star.[10] The star has 3.6[2] times the girth of the Sun and is radiating 38 times the Sun's luminosity from its photosphere at an effective temperature of 7568 K.[2] It has a moderate rotation rate, with a projected rotational velocity of around 16 km/s.[7]
A third component was detected in 1987 using speckle interferometry at an angular separation of Script error: No such module "val"..[6]
References
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- ↑ a b Template:Cite XHIP
- ↑ a b c d e f g h i j Template:Cite Gaia DR2
- ↑ a b c d Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c d e Script error: No such module "citation/CS1".
- ↑ a b c 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 "Check for unknown parameters".