  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Apus |
| Right ascension | 16h 33m 27.08379s[1] |
| Declination | −78° 53′ 49.7372″[1] |
| Apparent magnitude (V) | 3.86[2] |
| Characteristics | |
| Spectral type | G9 III[2] |
| U−Bcolor index | +0.62[3] |
| B−Vcolor index | +0.91[3] |
| Astrometry | |
| Radial velocity (Rv) | +5.7[2] km/s |
| Proper motion (μ) | RA: –126.122 ± 0.688[4]mas/yr Dec.: –78.699 ± 0.667[4]mas/yr |
| Parallax (π) | 21.7674±0.5542 mas[4] |
| Distance | 150 ± 4 ly (46 ± 1 pc) |
| Absolute magnitude (MV) | +0.41[5] |
| Details | |
| Surface gravity (log g) | 3.5[6] cgs |
| Temperature | 5,040[6] K |
| Metallicity [Fe/H] | –0.05[6] dex |
| Rotational velocity (v sin i) | 2.7[2] km/s |
| Other designations | |
| FK5 611,GJ 626.1,HD 147675,HIP 81065,HR 6102,SAO 257407,CPD–78° 1103[7] | |
| Database references | |
| SIMBAD | data |
Gamma Apodis (γ Aps, γ Apodis) is theBayer designation for astar in the southerncircumpolar constellation ofApus. Fromparallax measurements, the distance to this star can be estimated as 150 ± 4 light-years (46.0 ± 1.2 pc).[4] It is visible to the naked eye with anapparent visual magnitude of 3.86.[2] Astellar classification of G9 III[2] identifies it as agiant star in the later stages of itsevolution. It is an active X-ray source with a luminosity of1.607 × 1030 erg s−1, making it one of the 100 strongest stellar X-ray sources within 50 parsecs of the Sun.[8]
InChinese caused by adaptation of the European southern hemisphere constellations into the Chinese system,異雀 (Yì Què), meaningExotic Bird, refers to an asterism consisting of γ Apodis,ζ Apodis,ι Apodis,β Apodis,δ Octantis,δ1 Apodis,η Apodis,α Apodis andε Apodis. Consequently, γ Apodis itself is known as異雀四 (Yì Què sì, English:the Fourth Star of Exotic Bird).[9]
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