78 Aquarii
Star in the constellation Aquarius
From Wikipedia, the free encyclopedia
78 Aquarii (abbreviated 78 Aqr) is a star in the constellation of Aquarius. 78 Aquarii is its Flamsteed designation. Based on stellar parallax measurements made by Gaia, it is located about 600 light-years (180 parsecs) from the Sun.
Snapshot of 78 Aqr from Digitized Sky Survey project | |
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 54m 34.12178s[1] |
| Declination | −07° 12′ 16.6490″[1] |
| Apparent magnitude (V) | 6.181[2] |
| Characteristics | |
| Spectral type | K2III[3] |
| Astrometry | |
| Radial velocity (Rv) | 11.63±0.14[1] km/s |
| Proper motion (μ) | RA: −14.811[1] mas/yr Dec.: −34.596[1] mas/yr |
| Parallax (π) | 5.4411±0.0498 mas[1] |
| Distance | 599 ± 5 ly (184 ± 2 pc) |
| Details | |
| Radius | 21.775[4] R☉ |
| Luminosity | 203[1] L☉ |
| Surface gravity (log g) | 1.72[5] cgs |
| Temperature | 4,400±30[4] K |
| Metallicity [Fe/H] | −0.01[5] dex |
| Other designations | |
| BD−07°5886, HD 216637, HIP 113127, HR 8710, SAO 146382[6] | |
| Database references | |
| SIMBAD | data |
78 Aquarii has a spectral type of K2III,[3] indicating a giant star with a reddish color. Its apparent magnitude is 6.18,[2] indicating it is not visible to the sky for all but the best viewing conditions. At its surface, its temperature is estimated to be roughly 4,400 K.[4] It has no known exoplanets.
