Psi Boötis ψ Boo ψ Boötis merupakan salah satu bintang pada rasi Boötes merupakan bintang raksasa jingga orange K type g

Psi Boötis (ψ Boo / ψ Boötis) merupakan salah satu bintang pada rasi Boötes. Psi Boötis merupakan bintang raksasa jingga (orange K-type giant) dengan magnitudo of +4.52. Bintang ini berada pada jarak 250 tahun cahaya dari Bumi.

Psi Boötis
Data pengamatan Epos J2000.0 Ekuinoks J2000.0 (ICRS)
Rasi bintang	Boötes
Asensio rekta	15^j 04^m 26.74234^d
Deklinasi	+26° 56′ 51.5399″
Magnitudo tampak (V)	+4.55
Ciri-ciri
Kelas spektrum	K2 III
Indeks warna U−B	+1.34
Indeks warna B−V	+1.23
Astrometri

Kecepatan radial (R_v)	−25.72 ± 0.18 km/s
Gerak diri (μ)	RA: −175.42 mdb/thn Dek.: −4.06 mdb/thn
Paralaks (π)	13,26±0,26 mdb
Jarak	246 ± 5 tc (75 ± 1 pc)
Magnitudo mutlak (M_V)	+0.16

Detail

Massa	1.38 M_☉
Radius	20 R_☉
Luminositas	135 L_☉
Gravitasi permukaan (log g)	2.2
Suhu	4,302±22 K
Metalisitas [Fe/H]	−0.35
Kecepatan rotasi (v sin i)	3.5 km/s
Usia	4.16 gigatahun

Penamaan lain
Aulad al Nathlat, ψ Boo, 43 Boötis, BD+27° 2447, FK5 557, HD 133582, HIP 73745, HR 5616, SAO 83645, GC 20285
Referensi basis data
SIMBAD	data

Etimologi sunting

Boötes Constellation

Bintang ini memiliki nama tradisional Nadlat, berasal dari bahasa Arab yang berarti "yang kecil".

Selain rasi Boötes, bintang ini juga merupakan anggota dari berbagai rasi atau asterisma berikut:

nama rasi / asterisma	asal	arti	anggota lainnya
Al Aulād al Nadhlāt	Arab	anak dari si kecil	ε Boo, ρ Boo, σ Boo

Referensi sunting

HR 5616
Image Psi Boötis

^ van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752 , Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
^ Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99), Bibcode:1966CoLPL...4...99J.
Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
^ Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209.
Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430: 165–186, arXiv:astro-ph/0409579 , Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272.
^ Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", The Astronomical Journal, 150 (3): 88, arXiv:1507.01466 , Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88.
Rhoads, Jack W. (November 15, 1971), Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars (PDF), Jet Propulsion Laboratory, California Institute of Technology.
"psi Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Diakses tanggal 2017-09-09.
http://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Bootes*.html

Artikel bertopik bintang ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya.

[vanLeeuwen2007-1] van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752 , Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.

[Johnson1966-2] Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99), Bibcode:1966CoLPL...4...99J.

[perkins1989-3] Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.

[Massarotti2008-4] Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209.

[Famaey2005-5] Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics, 430: 165–186, arXiv:astro-ph/0409579 , Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272.

[luck2015-6] Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", The Astronomical Journal, 150 (3): 88, arXiv:1507.01466 , Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88.

[Rhoads1971-7] Rhoads, Jack W. (November 15, 1971), Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars (PDF), Jet Propulsion Laboratory, California Institute of Technology.

[SIMBAD-8] "psi Boo". SIMBAD. Centre de données astronomiques de Strasbourg. Diakses tanggal 2017-09-09.

[sb1-9] ttp://penelope.uchicago.edu/Thayer/E/Gazetteer/Topics/astronomy/_Texts/secondary/ALLSTA/Bootes*.html