78 Aquarii
 Snapshot of 78 Aqr from Digitized Sky Survey project | |
| Observation data EpochJ2000EquinoxJ2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h54m34.12147s[1] |
| Declination | −07° 12′ 16.6508″[1] |
| Apparent magnitude(V) | 6.181[2] |
| Characteristics | |
| Spectral type | K2III[3] |
| Astrometry | |
| Radial velocity(Rv) | 11.95 ± 0.22[1]km/s |
| Proper motion(μ) | RA:−14.505[1]mas/yr Dec.:−34.478[1]mas/yr |
| Parallax(π) | 5.4637 ± 0.0851mas[1] |
| Distance | 597 ± 9ly (183 ± 3pc) |
| Details | |
| Radius | 21.775[4]R☉ |
| Temperature | 4400 ± 30[4]K |
| Other designations | |
| Database references | |
| SIMBAD | data |
78 Aquarii(abbreviated78 Aqr) is astarin theconstellationofAquarius.78 Aquariiis itsFlamsteed designation.Based onstellar parallaxmeasurements made byGaia,it is located about 600light-years(180parsecs) from theSun.[1]
78 Aquarii has aspectral typeof K2III,[3]indicating agiant starwith a reddish color. Itsapparent magnitudeis 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.
References[edit]
- ^abcdefgBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData Release 2: Summary of the contents and survey properties ".Astronomy & Astrophysics.616.A1.arXiv:1804.09365.Bibcode:2018A&A...616A...1G.doi:10.1051/0004-6361/201833051.Gaia DR2 record for this sourceatVizieR.
- ^abHøg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars".Astronomy and Astrophysics.355:L27–L30.Bibcode:2000A&A...355L..27H.
- ^abHouk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5".Michigan Spectral Survey.5.Bibcode:1999MSS...C05....0H.
- ^abcStassun, K.G.; et al. (October 2019)."The revised TESS Input Catalog and Candidate Target List".The Astronomical Journal.158(4): 138.arXiv:1905.10694.Bibcode:2019AJ....158..138S.doi:10.3847/1538-3881/ab3467.S2CID166227927.
- ^"78 Aqr".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2021-02-22.
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