Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation
Grus
Right ascension
22h 06m 06.88568s[1]
Declination
−39° 32′ 36.0659″[1]
Apparent magnitude (V)
4.47[2]
Characteristics
Evolutionary stage
giant
Spectral type
K3 III[3]
U−B color index
+1.628[2]
B−V color index
+1.369[2]
Astrometry
Radial velocity (Rv)
+38.80[4] km/s
Proper motion (μ)
RA: −23.80[1] mas/yr Dec.: −124.58[1] mas/yr
Parallax (π)
13.47 ± 0.22 mas[1]
Distance
242 ± 4 ly (74 ± 1 pc)
Absolute magnitude (MV)
+0.12[5]
Details[6]
Mass
2.4 M☉
Radius
22.3 R☉
Luminosity
155 L☉
Surface gravity (log g)
2.13 cgs
Temperature
4,269 K
Other designations
λ Gru, CD−40° 14639, FK5 1581, HD 209688, HIP 109111, HR 8411, SAO 213543[7]
Database references
SIMBAD
data
Lambda Gruis, Latinized from λ Gruis, is a solitary,[8] orange-hued star in the southern constellation of Grus. With an apparent visual magnitude of 4.47,[2] it is visible to the naked eye as a faint point of light. The distance to this star, as determined using an annual parallax shift of 13.47 mas as seen from the Earth,[1] is around 242 light years. It is drifting further away with a radial velocity of +39 km/s,[4] having come to within 183 light-years some 805,000 years ago.[5]
This is an evolved K-type giant star with a stellar classification of K3 III,[3] having exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. It has about 2.4 times the mass of the Sun and has expanded to 22.3 times the Sun's radius. The star is radiating 155 times the Sun's luminosity from its photosphere at an effective temperature of 4,269 K.[6]
^ abcdefCite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
^ abcdCite error: The named reference Jennens1975 was invoked but never defined (see the help page).
^ abCite error: The named reference Houk1978 was invoked but never defined (see the help page).
^ abCite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
^ abCite error: The named reference Anderson2012 was invoked but never defined (see the help page).
^ abCite error: The named reference Cruzalebes2010 was invoked but never defined (see the help page).
^Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
^Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
LambdaGruis, Latinized from λ Gruis, is a solitary, orange-hued star in the southern constellation of Grus. With an apparent visual magnitude of 4.47...
Alpha Gruis is the brightest star in the southern constellation of Grus. It is officially named Alnair; Alpha Gruis is the star's Bayer designation, which...
Nebula, IC 5148 is a planetary nebula located around 1 degree west of LambdaGruis in the constellation of Grus (The Crane). It was discovered by Australian...
consisting of Gamma Gruis, LambdaGruis, Gamma Piscis Austrini and 19 Piscis Austrini. Consequently, the Chinese name for Gamma Gruis itself is 敗臼一 (Bài...
Beta Gruis Star 2.12 Algol Triple star system Maximum brightness 2.14 2.115 Denebola Star 2.17 Gamma Centauri Binary star system 2.21 2.14 Lambda Velorum...
اليمين aḏ-ḏirāʿ al-yamīn ('the right arm' [of Cepheus]). /ælˈdɛrəmɪn/ Grus γ Gruis Aldhanab The name was originally الذنب aḏ-ḏanab ('the tail' [of the constellation...
stars of Musca, along with Fomalhaut, Alpha Pavonis, and Alpha and Beta Gruis, were all claimed by the Arrernte. Musca is bordered by Crux to the north...
210.4–210.7 L/Teff Orbit of Venus 158.6 Reported for reference Tiaki (β Gruis) 138 L/Teff Gacrux (γ Crucis) 84±7 Twenty-sixth brightest star in the night...
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