10279+3642 HU 879 (Bet LMi)

 
 
10h 27m 53.09s +36° 42' 26.9" P.A. 231.00 sep 0.5 mag 4.62,6.04 Sp G8III dist. 47.19 pc (153.93 l.y.)
 
 
Coord 2000 10279+3642 Discov num HU  879 Comp Coord arcsec 2000 10 27 53.09 +36 42 26.9
Date first 1904 Date last 2021 Obs 174
Pa first 231 Pa last 230.6 P.A. Now (θ) 225.4° (calc)
Sep first 0.5 Sep last 0.474 Sep. Now (ρ) 0.55" (calc)
Mag pri 4.62 Mag sec 6.04 delta mag (ΔM) 1.42 Spectral class G8III (yellow)
Pri motion ra -118 Sec motion ra
Pri motion dec -101 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Bet LMi Constellation Leo Minor SAO 62053 HIP 51233
Tycho2 2517-01209-1 Gaia DR2 754644862217331584 HD 90537 HR 4100
GC 14358 ADS 7780 BD BD+37 2080 Bayer Beta Leonis Minoris
Bayer name Bet LMi Flamsteed 31 Leonis Minoris Flamsteed name 31 LMi FK5 390
Distance 47.19 Distance ly 153.93 Bayer greek β LMi
 
 
ORBITAL ELEMENTS
 
 
Period (P)3965d (10.86y)± 40 Periastron (T)51411.1d (1999.635y)± 4.8 Semi-major axis (a)0.3782a± 0.0007
Eccentricity (e)0.68± 0.002 Inclination (i)81.4°± 0.1 Longitude of periastron (ω)35.7°± 0.12
Node (Ω)40.7°± 0.1 Notesn ReferenceWaX2020
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 192.0 0.049
2001 218.2 0.338
2002 221.3 0.482
2003 223.2 0.546
2004 224.9 0.555
2005 226.7 0.522
2006 228.9 0.453
2007 232.1 0.350
2008 238.9 0.216
2009 275.8 0.067
2010 31.3 0.128
2011 206.8 0.103
2012 218.8 0.365
2013 221.6 0.495
2014 223.5 0.550
2015 225.2 0.553
2016 227.0 0.514
2017 229.3 0.440
2018 232.8 0.333
2019 240.7 0.195
2020 297.1 0.054
2021 35.5 0.138
2022 211.5 0.153
2023 219.4 0.390
2024 221.9 0.507
2025 223.7 0.553
2026 225.4 0.550
2027 227.3 0.506
2028 229.7 0.426
2029 233.5 0.314
2030 242.9 0.173
2031 326.1 0.050
2032 39.4 0.135
2033 214.0 0.199
2034 219.8 0.413
2035 222.2 0.517
2036 224.0 0.556
2037 225.7 0.546
2038 227.6 0.496
2039 230.1 0.412
2040 234.3 0.296
2041 245.8 0.151
2042 352.1 0.059
2043 44.2 0.114
2044 215.6 0.240
2045 220.3 0.433
2046 222.5 0.526
2047 224.2 0.557
2048 225.9 0.541
2049 227.9 0.486
2050 230.5 0.397


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds10279%2B3642d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic