10279+3642 HU  879 (Bet LMi)

 
 
10H 27M 53.09S +36 42' 26.9" P.A. 226.8 SEP 0.54 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
2012
Obs
165
Pa first
231
Pa last
225
P.A. Now (θ)
226.8°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.54"
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
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
Distance
47.19
Distance ly
153.93
last precise pa
224.5
last precise sep
0.541
 
 
ORBITAL ELEMENTS
 
 
Period (P)38.62y Periastron (T)1999.15y Semi-major axis (a)0.363a
Eccentricity (e)0.668 Inclination (i)79.1° Longitude of periastron (ω)29.8°
Node (Ω)41.5° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation1997
label rho theta
2000 0.038 83.7
2001 0.082 198.2
2002 0.170 210.4
2003 0.245 214.5
2004 0.308 216.8
2005 0.360 218.3
2006 0.404 219.5
2007 0.441 220.5
2008 0.472 221.3
2009 0.497 222.1
2010 0.517 222.7
2011 0.532 223.4
2012 0.543 224.0
2013 0.550 224.5
2014 0.554 225.1
2015 0.554 225.7
2016 0.550 226.2
2017 0.544 226.8
2018 0.534 227.4
2019 0.521 228.0
2020 0.506 228.7
2021 0.487 229.4
2022 0.466 230.1
2023 0.442 231.0
2024 0.415 231.9
2025 0.386 233.0
2026 0.354 234.3
2027 0.319 235.8
2028 0.281 237.7
2029 0.241 240.3
2030 0.199 243.8

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic