A light curve for Lambda Columbae, plotted from TESS data.[1] The 0.64 day period is marked in red.
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation
Columba
Right ascension
05h 53m 06.88101s[2]
Declination
−33° 48′ 04.9079″[2]
Apparent magnitude (V)
4.86[3]
Characteristics
Spectral type
B5 V[4]
U−B color index
−0.57[3]
B−V color index
−0.15[3]
Variable type
Suspected rotating ellipsoidal[5]
Astrometry
Radial velocity (Rv)
+30.0[6] km/s
Proper motion (μ)
RA: −4.72[2] mas/yr Dec.: +31.32[2] mas/yr
Parallax (π)
9.75 ± 0.21 mas[2]
Distance
335 ± 7 ly (103 ± 2 pc)
Absolute magnitude (MV)
−0.17[7]
Details
Mass
4.0±0.1[4]M☉
Radius
3.4[8]R☉
Luminosity
213[9]L☉
Surface gravity (log g)
4.22[10] cgs
Temperature
13,524[9] K
Metallicity [Fe/H]
−0.06[10] dex
Rotational velocity (v sin i)
88[11] km/s
Age
56.6±26.1[4] Myr
Other designations
λ Col, CD−33° 2599, HD 39764, HIP 27810, HR 2056, SAO 196276.[12]
Database references
SIMBAD
data
Lambda Columbae, Latinized from λ Columbae, is a probable binary star[13] in the southern constellation of Columba. With an apparent visual magnitude of 4.86,[3] it is faintly visible to the naked eye. The measured annual parallax shift of 9.75 mas[2] yields an estimated distance of roughly 335 light years.
Lambda Columbae has a stellar classification of B5 V,[4] indicating that it is a B-type main sequence star. It is a suspected rotating ellipsoidal variable[14] with a period of 0.64 days and an amplitude of 0.07 magnitude.[15] Confirmation would indicate that this is a close binary system.[5] It has an estimated age of around 57 million years.[4]
In Chinese, 子 (Zǐ), meaning Son, refers to an asterism consisting of λ Columbae and β Columbae.[16] Consequently, λ Columbae itself is known as 子一 (Zǐ yī, English: the First Star of Son.).[17] From this Chinese name, the name Tsze is derived.[18]
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^(in Chinese)中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
^(in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 16 日
^Cite error: The named reference Allen1963 was invoked but never defined (see the help page).
LambdaColumbae, Latinized from λ Columbae, is a probable binary star in the southern constellation of Columba. With an apparent visual magnitude of 4...
Son, refers to an asterism consisting of Beta Columbae and LambdaColumbae. Consequently, Beta Columbae itself is known as 子二 (Zǐ èr, English: the Second...
Cyprus between Limassol and Larnaca Zi Yi (子一), a star also called LambdaColumbae Sima Liang (227–291), known as Ziyi (子翼), a regent during the Jin Dynasty...
considered "theme" houses; predating the current classification system are Columbae (Social Change Through Nonviolence, since 1970), and Synergy (Exploring...
system 3.12 Beta Columbae Star 3.13 Delta Herculis Binary star system 3.139 3.12 HR 3803 Star 3.14 3.12 Alpha Lyncis Star 3.14 Lambda Centauri Star 3.14...
a multiple system. This event is credited with ejecting AE Aurigae, Mu Columbae and 53 Arietis at above 200 km·s−1 and has been traced to the Trapezium...
Arabic name Scientific star name Phact (al-)Fākhitah the Dove فاخثة Alpha Columbae Phad (al-)Fakhidh the Thigh فخذ Gamma Ursae Majoris Pherkad (al-)Farqad...
stars, with 3 Canis Majoris being placed by Lacaille into Columba as Delta Columbae (Flamsteed had not recognised Columba as a distinct constellation). He...
Kōng Master of Constructions Beta Ceti Diphda Cetus 屎 Shǐ Excrement Mu Columbae Columba A single-star asterism in the Three Stars mansion. 郎將 Láng Jiāng...
ISSN 0004-6361. S2CID 15874925. Murdin, P.; Penston, M. V. (1977-12-01). "The Lambda Orionis association". Monthly Notices of the Royal Astronomical Society...
related set of runaway stars is the case of AE Aurigae, 53 Arietis and Mu Columbae, all of which are moving away from each other at velocities of over 100 km/s...