12507+2032 HU  640AB

 
 
12H 50M 41.87S +20 32' 04.9" P.A. 250.4 SEP 0.43 MAG 10.19,9.91 SP K5 DIST. 38.27 PC (124.84 L.Y.)
 
 
Coord 2000
12507+2032
Discov num
HU  640
Comp
AB
Coord arcsec 2000
12 50 41.87 +20 32 04.9
Date first
1903
Date last
2010
Obs
82
Pa first
284
Pa last
227
P.A. Now (θ)
250.4°
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.43"
Mag pri
10.19
Mag sec
9.91
delta mag (ΔM)
0.28
Spectral class
K5 (yellow-orange)
Pri motion ra
-125
Sec motion ra
-125
Pri motion dec
-033
Sec motion dec
-033
Notes
O (Orbital solution)
This double is physical.
 
 
12507+2032 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 82529 12507+2032 HU 640 AB 1903 2010 82 250 0.4 10.19 9.91 0.28 Y <===
Show 82529 12507+2032 TOK 561 AC 1980 2001 3 119 999.9 9.39 14.75 5.36
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Coma Berenices
SAO
82529
HIP
62686
Tycho2
1455-01057-1
ADS
8680
BD
BD+21 2462
Distance
38.27
Distance ly
124.84
last precise pa
227.1
last precise sep
0.43
 
 
ORBITAL ELEMENTS
 
 
Period (P)124.28y Periastron (T)1911.28y Semi-major axis (a)0.62a
Eccentricity (e)0.387 Inclination (i)54.8° Longitude of periastron (ω)46.9°
Node (Ω)286.3° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.431 191.9
2001 0.425 195.2
2002 0.420 198.5
2003 0.416 201.9
2004 0.413 205.3
2005 0.410 208.8
2006 0.408 212.3
2007 0.407 215.9
2008 0.407 219.5
2009 0.407 223.1
2010 0.408 226.6
2011 0.410 230.2
2012 0.413 233.7
2013 0.416 237.1
2014 0.419 240.5
2015 0.422 243.9
2016 0.426 247.1
2017 0.430 250.4
2018 0.433 253.6
2019 0.436 256.7
2020 0.439 259.8
2021 0.441 262.8
2022 0.442 265.9
2023 0.442 268.9
2024 0.441 271.9
2025 0.439 275.0
2026 0.435 278.1
2027 0.429 281.3
2028 0.422 284.5
2029 0.412 287.9
2030 0.401 291.5

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