10544+3840 COU 1746
10h 54m 26.21s +38° 39' 36.6" P.A. 331.00 sep 0.3 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 |
2017 |
|
Obs |
21 |
|
Pa first |
284 |
|
Pa last |
331.1 |
|
P.A. Now (θ) |
331.1° |
|
Sep first |
0.2 |
|
Sep last |
0.325 |
|
Sep. Now (ρ) |
0.325" |
|
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 |
|
HIP |
53326 |
|
Tycho2 |
3009-00722-1 |
|
Gaia DR2 |
775547780852015104 |
|
BD |
BD+39 2389 |
|
Distance |
93.2 |
|
Distance ly |
304.02 |
|
ORBITAL ELEMENTS
Period (P) | 58.52y | |
Periastron (T) | 1972.67y | |
Semi-major axis (a) | 0.224a | |
Eccentricity (e) | 0.845 | |
Inclination (i) | 19.2° | |
Longitude of periastron (ω) | 22.2° | |
Node (Ω) | 113.2° | |
Notes | | |
Reference | Lin2018a | |
Equinox | 2000 | |
Last observation | 2012 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
312.5 |
0.409 |
2001 |
313.4 |
0.410 |
2002 |
314.3 |
0.410 |
2003 |
315.3 |
0.409 |
2004 |
316.2 |
0.408 |
2005 |
317.1 |
0.406 |
2006 |
318.1 |
0.404 |
2007 |
319.1 |
0.400 |
2008 |
320.0 |
0.396 |
2009 |
321.0 |
0.392 |
2010 |
322.1 |
0.387 |
2011 |
323.1 |
0.381 |
2012 |
324.2 |
0.374 |
2013 |
325.4 |
0.367 |
2014 |
326.5 |
0.358 |
2015 |
327.8 |
0.349 |
2016 |
329.1 |
0.340 |
2017 |
330.5 |
0.329 |
2018 |
332.0 |
0.317 |
2019 |
333.6 |
0.305 |
2020 |
335.4 |
0.291 |
2021 |
337.3 |
0.276 |
2022 |
339.5 |
0.260 |
2023 |
341.9 |
0.243 |
2024 |
344.8 |
0.224 |
2025 |
348.2 |
0.204 |
2026 |
352.4 |
0.182 |
2027 |
357.8 |
0.157 |
2028 |
5.4 |
0.130 |
2029 |
17.4 |
0.100 |
2030 |
41.0 |
0.066 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|