10544+3840 COU1746

 
 
10H 54M 26.21S +38 39' 36.6" P.A. 324.2 SEP 0.47 MAG 10.70,10.91 SP K0 DIST. 93.2 PC (304.02 L.Y.)
 
 
Coord 2000
10544+3840
Discov num
COU1746
Comp
Coord arcsec 2000
10 54 26.21 +38 39 36.6
Date first
1979
Date last
2012
Obs
14
Pa first
284
Pa last
324
P.A. Now (θ)
324.2°
Sep first
0.2
Sep last
0.4
Sep. Now (ρ)
0.47"
Mag pri
10.70
Mag sec
10.91
delta mag (ΔM)
0.21
Spectral class
K0 (yellow-orange)
Pri motion ra
-106
Sec motion ra
Pri motion dec
-077
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ursa Major
SAO
62305
HIP
53326
Tycho2
3009-00722-1
BD
BD+39 2389
Distance
93.2
Distance ly
304.02
last precise pa
324.4
last precise sep
0.374
 
 
ORBITAL ELEMENTS
 
 
Period (P)92.4y Periastron (T)1964.58y Semi-major axis (a)0.31a
Eccentricity (e)0.55 Inclination (i)60° Longitude of periastron (ω)359.9°
Node (Ω)140° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.449 312.3
2001 0.455 313.1
2002 0.460 313.8
2003 0.464 314.6
2004 0.468 315.3
2005 0.472 316.0
2006 0.474 316.7
2007 0.477 317.4
2008 0.478 318.1
2009 0.480 318.7
2010 0.480 319.4
2011 0.480 320.1
2012 0.480 320.8
2013 0.479 321.5
2014 0.478 322.1
2015 0.476 322.8
2016 0.473 323.5
2017 0.470 324.2
2018 0.467 324.9
2019 0.463 325.7
2020 0.458 326.4
2021 0.453 327.1
2022 0.447 327.9
2023 0.441 328.7
2024 0.434 329.5
2025 0.427 330.4
2026 0.419 331.3
2027 0.410 332.2
2028 0.401 333.1
2029 0.391 334.1
2030 0.381 335.2

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