11425+2355 COU 390

 
 
11h 42m 30.32s +23 54' 22.9" P.A. 101.7 sep 0.41 mag 9.27,11.66 Sp G5 dist. 45.72 pc (149.14 l.y.)
 
 
Coord 2000
11425+2355
Discov num
COU 390
Comp
Coord arcsec 2000
11 42 30.32 +23 54 22.9
Date first
1969
Date last
2016
Obs
14
Pa first
161
Pa last
95
P.A. Now (θ)
101.7°
Sep first
0.8
Sep last
0.4
Sep. Now (ρ)
0.41"
Mag pri
9.27
Mag sec
11.66
delta mag (ΔM)
2.39
Spectral class
G5 (yellow)
Pri motion ra
+058
Sec motion ra
Pri motion dec
+085
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
95.1
Precise sep
0.371
Cdsa2 id
COU 390
Constellation
Leo
SAO
81950
HIP
57112
HD
101728
BD
BD+24 2384
Ra deg
11.708422222222222
De deg
23.90636111111111
Distance
45.72
Distance ly
149.14
last precise pa
95.1
last precise sep
0.371
 
 
ORBITAL ELEMENTS
 
 
Period (P)92.75y± 5.57 Periastron (T)2007.86y± 0.28 Semi-major axis (a)0.5498a± 0.0168
Eccentricity (e)0.786± 0.014 Inclination (i)43.6°± 3.2 Longitude of periastron (ω)100.9°± 2.7
Node (Ω)231.4°± 3.2 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.403 209.1
2001 0.374 212.6
2002 0.342 216.6
2003 0.306 221.6
2004 0.266 228.1
2005 0.218 237.1
2006 0.164 251.7
2007 0.107 282.1
2008 0.089 345.8
2009 0.135 31.4
2010 0.185 52.2
2011 0.227 64.6
2012 0.262 73.4
2013 0.293 80.2
2014 0.320 85.8
2015 0.345 90.5
2016 0.367 94.7
2017 0.388 98.3
2018 0.408 101.7
2019 0.427 104.7
2020 0.444 107.4
2021 0.461 110.0
2022 0.476 112.4
2023 0.491 114.7
2024 0.505 116.8
2025 0.519 118.8
2026 0.532 120.7
2027 0.545 122.5
2028 0.557 124.2
2029 0.568 125.9
2030 0.579 127.5

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

grafico orbita





wds11425%2B2355a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11425+2355 COU 390 2000 11 206 0.5 9.27 11.66 G5 114230.32+235422.9
11425+2355 COU 390 2013 12 262 0.3 9.27 11.66 G5 114230.32+235422.9
11425+2355 COU 390 2015 13 91 0.3 9.27 11.66 G5 114230.32+235422.9
11425+2355 COU 390 2016 14 95 0.4 9.27 11.66 G5 O 114230.32+235422.9

If you need more information about this double, apply for a data request form to the WDS.