Loading AI tools
Star in the constellation Aquarius From Wikipedia, the free encyclopedia
HD 223311 is a star in the equatorial constellation of Aquarius. It has an orange hue and is visible to the naked eye as a dim star with an apparent visual magnitude of 6.08.[2] Based on parallax measurements, the star is located at a distance of approximately 910 light years from the Sun. It is a radial velocity standard[9] star that is drifting closer to the Sun at the rate of −20 km/s.[3] The star is situated near the ecliptic and thus is subject to lunar occultations.[10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquarius |
Right ascension | 23h 48m 32.47911s[1] |
Declination | −06° 22′ 49.5328″[1] |
Apparent magnitude (V) | 6.08[2] |
Characteristics | |
Spectral type | K4III[3] |
U−B color index | +1.71[2] |
B−V color index | +1.452[3] |
Variable type | suspected[4] |
Astrometry | |
Radial velocity (Rv) | −20.069±0.008[3] km/s |
Proper motion (μ) | RA: +0.01[5] mas/yr Dec.: −19.04[5] mas/yr |
Parallax (π) | 3.5950 ± 0.0884 mas[1] |
Distance | 910 ± 20 ly (278 ± 7 pc) |
Absolute magnitude (MV) | −0.80[6] |
Details | |
Radius | 40.78+3.27 −7.51[1] R☉ |
Luminosity | 496±15[1] L☉ |
Temperature | 4,267+457 −162[1] K |
Metallicity [Fe/H] | −0.22±0.09[7] dex |
Other designations | |
Database references | |
SIMBAD | data |
This is an aging K-type giant star with a stellar classification of K4III.[3] Having exhausted the supply of hydrogen at its core, it has cooled and expanded off the main sequence. At present it has 41[1] times the girth of the Sun. It is a suspected variable star of unknown type that has been measured ranging in brightness from magnitude 5.01 down to 5.26 in the infrared I band.[4] The star is radiating 496 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,267 K.[1]
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.