21 Leonis Minoris adalah salah satu bintang di rasi Leo Minor Bintang ini memiliki magnitudo 4 49 Bintang ini berada pad

21 Leonis Minoris adalah salah satu bintang di rasi Leo Minor. Bintang ini memiliki magnitudo 4.49. Bintang ini berada pada jarak 91 tahun cahaya dari Bumi.

21 Leonis Minoris
Data pengamatan Epos J2000 Ekuinoks J2000
Rasi bintang	Leo Minor
Asensio rekta	10^j 07^m 25.76296^d
Deklinasi	+35° 14′ 40.8965″
Magnitudo tampak (V)	4,47 - 4,52
Ciri-ciri
Kelas spektrum	A7V
Indeks warna U−B	+0,08
Indeks warna B−V	+0,18
Jenis variabel	δ Sct
Astrometri

Kecepatan radial (R_v)	−11,40 ± 0,9 km/s
Gerak diri (μ)	RA: 52,90 mdb/thn Dek.: 0,62 mdb/thn
Paralaks (π)	35,41±0,18 mdb
Jarak	92,1 ± 0,5 tc (28,2 ± 0,1 pc)
Magnitudo mutlak (M_V)	+2,43

Detail

Radius	1,2–1,8 R_☉
Gravitasi permukaan (log g)	4,07
Suhu	7839 K
Metalisitas [Fe/H]	[M/H] = −0.01
Kecepatan rotasi (v sin i)	155 km/s
Usia	390 megatahun

Penamaan lain
21 LMi, BD+35° 2110, HD 87696, HIP 49593, HR 3974, SAO 61874, Gl 378.3, GJ 9314
Referensi basis data
SIMBAD	data

Etimologi sunting

Nama lainnya untuk bintang ini adalah:

nama lain	asal bahasa	arti
內平二 / Nèipíngèr	Tiongkok	bintang kedua pada rasi Hakim Tinggi

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

nama rasi / asterisma / kelompok	asal	arti	anggota lainnya
內平 / Nèipíng	Tiongkok	Hakim Tinggi	13 LMi
Sirius Supercluster	HD 13594, 5 Aql, δ Aqr, 32 Aqr, β Aur, 45 Boo, χ Cet, α CMa, 6 CMi, δ Col, 29 Com, α CrB, υ CrB, ζ Crt, HD 209515, HD 184960, δ Del, 59 Dra, HD 129798, β Eri, ζ Eri, HD 157740, υ¹ Hya, HD 109799, ζ Leo, τ Leo, γ Lep, RR Lyn, α Oph, HD 65810, HD 178428, HD 165185, β Ser, HD 26923, HD 111456, ζ TrA, 37 UMa, β UMa, γ UMa, δ UMa, ε UMa, 78 UMa, ζ UMa, 80 UMa, o Vir, α Vol.
Ursa Major Moving Group	(core star antara lain): 37 UMa, β UMa, γ UMa, δ UMa, ε UMa, 78 UMa, ζ UMa, 80 UMa stream star: δ Aqr, β Aur, ζ Boo, 18 Boo, χ Cet A, 29 Com, ζ Crt, α CrB, 59 Dra, γ Lep, 16 Lyr, γ Mic, χ¹ Ori, 89 Psc, β Ser, ω Ser, τ⁶ Ser, 6 Sex, 66 Tau, ζ TrA, π¹ UMa, 41 Vir

Referensi sunting

^ van Leeuwen, F.; et al. (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.
^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
Johnson, H. L.; Morgan, W. W. (1953). "Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas". The Astrophysical Journal. 117: 313. Bibcode:1953ApJ...117..313J. doi:10.1086/145697.
^ Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. Diakses tanggal 12 December 2016.
Eggen, Olin J. (August 1998), "The Sirius Supercluster and Missing Mass near the Sun", The Astronomical Journal, 116 (2): 782–788, Bibcode:1998AJ....116..782E, doi:10.1086/300465.
Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy & Astrophysics. 367 (2): 521–24. arXiv:astro-ph/0012289 . Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.
^ Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Robinson, P. E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I". The Astronomical Journal. 126 (4): 2048. arXiv:astro-ph/0308182 . Bibcode:2003AJ....126.2048G. doi:10.1086/378365.
^ Rieke, G. H.; Su, K. Y. L.; Stansberry, J. A.; Trilling, D.; Bryden, G.; Muzerolle, J.; White, B.; Gorlova, N.; Young, E. T.; Beichman, C. A.; Stapelfeldt, K. R.; Hines, D. C. (2005). "Decay of Planetary Debris Disks". The Astrophysical Journal. 620 (2): 1010. Bibcode:2005ApJ...620.1010R. CiteSeerX 10.1.1.579.8956 . doi:10.1086/426937.
"* 21 LMi". SIMBAD. Centre de données astronomiques de Strasbourg. Diakses tanggal 22 March 2017.
salah satu rasi bintang menurut bangsa Tiongkok
Eggen, Olin J. (1992). "The Sirius supercluster in the FK5". Astronomical Journal. 104 (4): 1493–1504. doi:10.1086/116334. Diakses tanggal 2007-11-22.
http://articles.adsabs.harvard.edu/full/1983AJ.....88..642E
bintang ini termasuk stream star

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

[HIP-1] van Leeuwen, F.; et al. (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.

[GCVS-2] Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.

[3] Johnson, H. L.; Morgan, W. W. (1953). "Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas". The Astrophysical Journal. 117: 313. Bibcode:1953ApJ...117..313J. doi:10.1086/145697.

[UBV-4] Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.

[RV-5] Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. Diakses tanggal 12 December 2016.

[Eggen1998-6] Eggen, Olin J. (August 1998), "The Sirius Supercluster and Missing Mass near the Sun", The Astronomical Journal, 116 (2): 782–788, Bibcode:1998AJ....116..782E, doi:10.1086/300465.

[7] Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy & Astrophysics. 367 (2): 521–24. arXiv:astro-ph/0012289 . Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.

[Gray-8] Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Robinson, P. E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I". The Astronomical Journal. 126 (4): 2048. arXiv:astro-ph/0308182 . Bibcode:2003AJ....126.2048G. doi:10.1086/378365.

[Rieke-9] Rieke, G. H.; Su, K. Y. L.; Stansberry, J. A.; Trilling, D.; Bryden, G.; Muzerolle, J.; White, B.; Gorlova, N.; Young, E. T.; Beichman, C. A.; Stapelfeldt, K. R.; Hines, D. C. (2005). "Decay of Planetary Debris Disks". The Astrophysical Journal. 620 (2): 1010. Bibcode:2005ApJ...620.1010R. CiteSeerX 10.1.1.579.8956 . doi:10.1086/426937.

[SIMBAD-10] "* 21 LMi". SIMBAD. Centre de données astronomiques de Strasbourg. Diakses tanggal 22 March 2017.

[11] salah satu rasi bintang menurut bangsa Tiongkok

[12] Eggen, Olin J. (1992). "The Sirius supercluster in the FK5". Astronomical Journal. 104 (4): 1493–1504. doi:10.1086/116334. Diakses tanggal 2007-11-22.

[13] ttp://articles.adsabs.harvard.edu/full/1983AJ.....88..642E

[14] tang ini termasuk stream star