Beta Leonis Minoris

Beta Leonis Minoris (Beta LMi, β Leonis Minoris, β LMi) adalah sistem bintang biner yang terletak di rasi bintang Leo Minor. Bintang ini memiliki magnitudo semu 4,215.[4]

β Leonis Minoris
Data pengamatan
Epoch J2000.0      Equinox J2000.0 (ICRS)
Rasi bintangLeo Minor
KomponenAB
Asensio rekta 10j 27m 10j 27m
 52.998s53.006s
Deklinasi +36° 42′[1] +36° 42′[2]
 25.95″26.01″
Magnitudo semu (V)4.40[3]6.12[3]
 4.215[4]
Karakteristik
Klasifikasi bintangG8III-IV[3]F8IV[3]
U-B Indeks warna+0.64[3]
B-V Indeks warna+0.90[3]
V-R Indeks warna0.5[4]
R-I Indeks warna+0.46[3]
Astrometri
Gerak diri: 
RA (μα cos δ) −134.15[1] m.b/thn −102.97[2] m.b/thn 
Dec. (μδ) −113.57[1]&nbspm.b/thn −95.00[2]&nbspm.b/thn 
Paralaks (π)22.34 ± 0.87[4] m.b
Jarak146 ± 6 tc
(45 ± 2 pc)
Magnitudo mutlak (MV)0.96[5]
Details
Massa~2[6] M☉1.35[6] M☉
Radius7.8[6] R☉2[6] R☉
Luminositas36[6] L☉5.8[6] L☉
Temperatur5075[6] K6200[6] K
Orbit[7]
Periode (P)38.62 y
Sumbu semi-mayor (a)0.363″
Eksentrisitas (e)0.668
Inklinasi (i)79.1°
Bujur node menaik (Ω)41.5°
Periastron epos (T)B1999.15
Argumen periastron (ω)
(secondary)		29.8°
Referensi Database
SIMBADdata
Nama lain
β LMi, Beta Leonis Minoris, Beta LMi, 31 Leonis Minoris, 31 LMi, ADS 7780 AB, BD+37 2080, CCDM J10279+3642AB, FK5 390, GC 14358, HD 90537, HIP 51233, HR 4100, PPM 75233, SAO 62053, WDS 10279+3642AB.[4][3][8]

Referensi
  1. HIP 51233, record for component 1, Hipparcos catalogue; CDS ID I/239.
  2. HIP 51233, record for component 2, Hipparcos catalogue; CDS ID I/239.
  3. HR 4100, 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 October 1, 2008.
  4. HD 90537 -- Spectroscopic binary, database entry, SIMBAD. Accessed on line October 1, 2008.
  5. Dari magnitudo semu dan paralaks.
  6. Beta LMi, Stars, Jim Kaler. Accessed on line October 2, 2008.
  7. Entry 10279+3642, Sixth Catalog of Orbits of Visual Binary Stars, United States Naval Observatory. Accessed on line October 1, 2008.
  8. Entry 10279+3642, The Washington Double Star Catalog, United States Naval Observatory. Accessed on line October 1, 2008.
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