54 Arietis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Apparent magnitude (V) | 6.27[3] |
| Characteristics | |
| Evolutionary stage | AGB[4] |
| Spectral type | M0 III[5] |
| B−V Template:Engvar | Script error: No such module "val".[6] |
| Astrometry | |
| Radial velocity (Rv) | Script error: No such module "val".[2] km/s |
| Proper motion (μ) | RA: +38.133[2] mas/yr Dec.: −14.295[2] mas/yr |
| Parallax (π) | 4.3947±0.1037 mas[2] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | −0.54[6] |
| 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 |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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54 Arietis is a star in the northern zodiac constellation of Aries. 54 Arietis is the Flamsteed designation. It is a challenge to view with the naked eye even under good viewing conditions, having an apparent visual magnitude of 6.27.[3] Based upon an annual parallax shift of Script error: No such module "val"., it is located approximately Script error: No such module "convert". distant from Earth, and it is drifting further away with a radial velocity of +44 km/s.[2] The brightness of the star is diminished by 0.15[8] in magnitude from extinction caused by interstellar gas and dust. The star is positioned near the ecliptic and thus is subject to lunar occultations.[9]
This is an aging red giant star with a stellar classification of M0 III[5] that is currently evolving along the asymptotic giant branch.[4] Having exhausted the supply of hydrogen at its core, the star has expanded to 41[2] times the Sun's radius. It varies slightly in brightness, with a periodicity of 6.2 days and an amplitude change of 0.0096 in magnitude.[5] On average it is radiating 387[2] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,013 K.[2]
References
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- ↑ Script error: No such module "citation/CS1".
- ↑ a b c d e f g h i j k l m Template:Cite Gaia DR2
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ a b c Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Template:Cite simbad
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1". See event #419 for example.
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