Global InformationPhi Gruis information
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Grus |
| Right ascension | 23h 18m 09.88466s[1] |
| Declination | −40° 49′ 27.7034″[1] |
| Apparent magnitude (V) | 5.49[2] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F4 V[3] |
| U−B color index | −0.05[2] |
| B−V color index | +0.47[2] |
| Astrometry | |
| Radial velocity (Rv) | +15.15±0.29[1] km/s |
| Proper motion (μ) | RA: +126.920[1] mas/yr Dec.: −122.577[1] mas/yr |
| Parallax (π) | 29.3153 ± 0.1115 mas[1] |
| Distance | 111.3 ± 0.4 ly (34.1 ± 0.1 pc) |
| Absolute magnitude (MV) | 2.82[4] |
| Details[5] | |
| Mass | 1.45+0.02 −0.01 M☉ |
| Radius | 1.87+0.07 −0.04[1] R☉ |
| Luminosity | 5.84±0.03[1] L☉ |
| Surface gravity (log g) | 4.06±0.02 cgs |
| Temperature | 6,606±63 K |
| Metallicity [Fe/H] | 0.00±0.05 dex |
| Rotational velocity (v sin i) | 19.9±1.0[4] km/s |
| Age | 2.12+0.22 −0.16 Gyr |
| Other designations | |
φ Gru, CD−41°15211, GJ 4330, HD 219693, HIP 115054, HR 8859, SAO 231539[6] | |
| Database references | |
| SIMBAD | data |
Phi Gruis, Latinised from φ Gruis, is a solitary,[7] yellow-white hued star in the southern constellation of Grus, near the eastern constellation border with Phoenix. It is faintly visible to the naked eye with an apparent visual magnitude of +5.49.[2] Based upon an annual parallax shift of 29.3 mas as seen from the Earth,[8] it lies at a distance of 111 light years from the Sun. The star is drifting further away with a radial velocity of +15 km/s.[1]
This object is an F-type main-sequence star with a stellar classification of F4 V,[3] where the luminosity class of 'V' indicates it is currently generating energy through hydrogen fusion at its core. It is 2.12[5] billion years old and is spinning with a projected rotational velocity of 20 km/s.[4] The star has 1.45[5] times the mass of the Sun and 1.87[1] times the Sun's radius. It is radiating 5.8[1] times as much luminosity as the Sun from its photosphere at an effective temperature of 6,606 km/s.[5]
- ^ a b c d e f g h i j k Cite error: The named reference
GaiaDR2was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
Przybylski1965was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
gray2006was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
AmmlerVonEiff2012was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
AguileraGómez2018was invoked but never defined (see the help page). - ^ Cite error: The named reference
SIMBADwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Eggleton2008was invoked but never defined (see the help page). - ^ Cite error: The named reference
vanLeeuwen2007was invoked but never defined (see the help page).