85 Pegasi
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Pegasus |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 5.75 / 8.89 |
| Characteristics | |
| A | |
| Evolutionary stage | subgiant[2] |
| Spectral type | G5IV[2] |
| B | |
| Spectral type | K6-8V[2] |
| Astrometry | |
| Proper motion (μ) | RA: 780.22 ± 2.01[1] mas/yr Dec.: -917.75 ± 1.20[1] mas/yr |
| Parallax (π) | 82.5±0.8 mas[3] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 5.32 + 7.68 + 11.19[4] |
| Details | |
| A | |
| Mass | Script error: No such module "val".[5] Template:Solar mass |
| Radius | Script error: No such module "val".[6] Template:Solar radius |
| Luminosity | Script error: No such module "val".[6] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[5] cgs |
| Temperature | Script error: No such module "val".[6] K |
| Metallicity [Fe/H] | Script error: No such module "val".[5] dex |
| Age | Script error: No such module "val".[2] Gyr Script error: No such module "val".[4] Gyr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Ba | |
| Mass | Script error: No such module "val".[2] Template:Solar mass |
| Radius | 0.512[4] Template:Solar radius |
| Luminosity | 0.074[4] Template:Solar luminosity |
| Surface gravity (log g) | Script error: No such module "val".[2] cgs |
| Temperature | Script error: No such module "val".[2] K |
| Bb | |
| Mass | 0.14[4] Template:Solar mass |
| Radius | 0.155[4] Template:Solar radius |
| Luminosity | 0.003[4] Template:Solar luminosity |
| Surface gravity (log g) | 5.18[4] cgs |
| Temperature | 3,330[4] K |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| BDS 12701, HR 9088, HD 224930, LFT 1848, LHS 101, LTT 17088, SAO 91669, HIP 171. | |
| 85 Pegasi A: ADS 17175 A, GJ 914 A, BD +26°4734 A, BU 733 A. | |
| 85 Pegasi B: ADS 17175 B, GJ 914 B, BD +26°4734 B, BU 733 B. | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
Script error: No such module "Check for unknown parameters".
85 Pegasi is a multiple star system 39.5 light years away[3] in the constellation of Pegasus. The primary component is sixth magnitude 85 Pegasi A, which is a yellow dwarf like the Sun. The secondary component, 85 Pegasi B, is a ninth magnitude orange dwarf that takes 26.28 years to orbit at 10.3 AU around the primary in an elliptical orbit. The orbital distance ranges from 6.4 AU at periastron to 14.2 AU at apastron. 85 Pegasi B may itself be a binary, with a close, faint red dwarf companion (designated 85 Pegasi Bb) separated by 2 AU from the primary (designated 85 Pegasi Ba). The mass would be 11% solar mass (Template:Solar mass). All components in the star system including Star A are smaller, cooler and less massive, luminous, and metallic than the Sun and 51 Pegasi.
An infrared excess has been detected around the primary, most likely indicating the presence of a circumstellar disk at a radius of more than 97 AU. The temperature of this dust is below 25 K.[7]
References
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- ↑ a b c d Script error: No such module "Citation/CS1". Vizier catalog entry
- ↑ a b c d e f g Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1". Vizier catalog entry
- ↑ a b c d e f g h i Script error: No such module "Citation/CS1".
- ↑ a b c Script error: No such module "Citation/CS1".
- ↑ a b c Script error: No such module "Citation/CS1". 85 Peg's database entry at VizieR.
- ↑ Script error: No such module "Citation/CS1".
Script error: No such module "Check for unknown parameters".
- Script error: No such module "Citation/CS1".