Alpha Columbae

α Columbae
Data pengamatan; Epos J2000.0 Ekuinoks J2000.0 (ICRS)
Rasi bintang	Columba
Asensio rekta	05j 39m 38.9399d
Deklinasi	−34° 04′ 26.788″
Magnitudo tampak (V)	2.60
Ciri-ciri
Kelas spektrum	B7IVe
Indeks warna U−B	-0.46
Indeks warna B−V	-0.12
Indeks warna R−I	-0.09
Astrometri
Kecepatan radial (Rv)	35 ± 5 km/s
Gerak diri (μ)	RA: -0.10 mdb/thn ; Dek.: -24.05 mdb/thn
Paralaks (π)	12,16±0,60 mdb
Jarak	270 ± 10 tc ; (82 ± 4 pc)
Magnitudo mutlak (MV)
Detail
Massa	4.5 M☉
Radius	7 R☉
Luminositas (bolometrik)	1,000 L☉
Suhu	12,500 K
Penamaan lain
	Alpha Columbae (α Col), CD -34°2375 , CPD -34°703, FK5 215, CSV 100672, GC 7078, HD 37795, HIP 26634, HR 1956, NSV 2549, PPM 281732, SAO 196059, CCDM J05396-3404 A.
Referensi basis data
SIMBAD	data

Alpha Columbae (α Columbae / α Col) adalah bintang tercerah pada rasi Columba. Alpha Columbae adalah bintang ganda dengan kode CCDM J05396-3404.

Bintang utamanya (CCDM J05396-3404 A) bintang subraksasa (subgiant) dan memiliki magnitudo antara 2.62 sampai 2.66. Diketahui sering adanya semburan gas pada bintang ini^[5]. Pasangannya, (CCDM J05396-3404 B) memiliki magnitudo 12.3 dan terpisah 13.5 arcsecond dari komponen utamanya ^[6]

Etimologi

Nama tradisional bintang ini adalah Phact (terkadang disebut Phad, Phaet, Phakt^[5]) berasal dari Arab fākh(i)tah [fa:x(i)ta] yang berarti "sejenis burung merpati". Aslinya dirujukkan kepada rasi Cygnus sebagai al-Fākhtah, namun kemudian dirujukkan penamaannya kepada bintang ini.^[7]^[8]^[9]^[10] The etymology of its name hadāri (unknown meaning)^[11] has also been suggested.

Nama lain dari para astronom terdahulu adalah :

nama lain	asal bahasa	arti
丈人一 / Zhàngrényī	China	bintang pertama pada rasi Kakek^[12]
丈人北星 / Zhàngrénběixīng	China	bintang di utara (rasi) Kakek

Referensi

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ * alf Col -- Be Star, database entry, SIMBAD. Accessed on line April 21, 2009.
^ ^a ^b ^c HR 1956, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line April 21, 2009.
^ From apparent magnitude and parallax.
^ ^a ^b ^c ^d Jim Kaler: Phact - STARS. Accessed on line April 21, 2009.
^ ^a ^b Note of HR 1956, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line April 21, 2009.
^ CCDM J05396-3404,database entry, J. Dommanget and O. Nys (2002) Catalogue of the Components of Double and Multiple Stars, Accessed on line April 21, 2009.
^ Davis, Jr., G. A., (1971). Pronunciations, Derivations, and Meanings of a Selected List of Star Names (edisi ke-rep.). Cambridge, MA: Sky Pub. Corp. hlm. 11.
^ Kunitzsch, P., (1959). Arabische Sternnamen in Europa. Wiesbaden: Otto Harrassowitz. hlm. 191–192.
^ Laffitte, R., (2005). Héritages arabes: Des noms arabes pour les étoiles (edisi ke-2^éme revue et corrigée). Paris: Librairie Orientaliste Paul Geunthner / Les Cahiers de l'Orient. hlm. 223.
^ Kunitzsch, P., & Smart, T., (2006). A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations (edisi ke-2nd rev.). Cambridge, MA: Sky Pub. hlm. 30. ISBN 9781931559447.
^ Allen, R. H., (1963). Star Names: Their Lore and Meaning (edisi ke-rep.). New York, NY: Dover Publications Inc. hlm. 167. ISBN 0486210790.
^ salah satu rasi bintang menurut bangsa Cina

[sb0-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ * alf Col -- Be Star, database entry, SIMBAD. Accessed on line April 21, 2009.

[bsc1-2] HR 1956, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line April 21, 2009.

[3] From apparent magnitude and parallax.

[kaler-4] Jim Kaler: Phact - STARS. Accessed on line April 21, 2009.

[bsc2-5] Note of HR 1956, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line April 21, 2009.

[6] CCDM J05396-3404,database entry, J. Dommanget and O. Nys (2002) Catalogue of the Components of Double and Multiple Stars, Accessed on line April 21, 2009.

[7] Davis, Jr., G. A., (1971). Pronunciations, Derivations, and Meanings of a Selected List of Star Names (edisi ke-rep.). Cambridge, MA: Sky Pub. Corp. hlm. 11.

[8] Kunitzsch, P., (1959). Arabische Sternnamen in Europa. Wiesbaden: Otto Harrassowitz. hlm. 191–192.

[9] Laffitte, R., (2005). Héritages arabes: Des noms arabes pour les étoiles (edisi ke-2^éme revue et corrigée). Paris: Librairie Orientaliste Paul Geunthner / Les Cahiers de l'Orient. hlm. 223.

[10] Kunitzsch, P., & Smart, T., (2006). A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations (edisi ke-2nd rev.). Cambridge, MA: Sky Pub. hlm. 30. ISBN 9781931559447.

[11] Allen, R. H., (1963). Star Names: Their Lore and Meaning (edisi ke-rep.). New York, NY: Dover Publications Inc. hlm. 167. ISBN 0486210790.

[12] salah satu rasi bintang menurut bangsa Cina

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Data pengamatan Epos J2000.0 Ekuinoks J2000.0 (ICRS)
Rasi bintang	Columba
Asensio rekta	05^j 39^m 38.9399^d^[1]
Deklinasi	−34° 04′ 26.788″^[1]
Magnitudo tampak (V)	2.60^[1]
Ciri-ciri
Kelas spektrum	B7IVe^[1]
Indeks warna U−B	-0.46^[2]
Indeks warna B−V	-0.12^[2]
Indeks warna R−I	-0.09^[2]
Astrometri

Kecepatan radial (R_v)	35 ± 5^[1] km/s
Gerak diri (μ)	RA: -0.10^[1] mdb/thn Dek.: -24.05^[1] mdb/thn
Paralaks (π)	12,16±0,60^[1] mdb
Jarak	270 ± 10 tc (82 ± 4 pc)
Magnitudo mutlak (M_V)	^[3]

Detail

Massa	4.5^[4] M_☉
Radius	7^[4] R_☉
Luminositas (bolometrik)	1,000^[4] L_☉
Suhu	12,500^[4] K

Penamaan lain
Alpha Columbae (α Col), CD -34°2375 , CPD -34°703, FK5 215, CSV 100672, GC 7078, HD 37795, HIP 26634, HR 1956, NSV 2549, PPM 281732, SAO 196059, CCDM J05396-3404 A.^[1]
Referensi basis data
SIMBAD	data