15031+4439 CHR  43

 
 
15H 03M 06.63S +44 38' 39.9" P.A. 332.4 SEP 0.15 MAG 6.65, SP F6IV DIST. 55.65 PC (181.53 L.Y.)
 
 
Coord 2000
15031+4439
Discov num
CHR  43
Comp
Coord arcsec 2000
15 03 06.63 +44 38 39.9
Date first
1985
Date last
2007
Obs
13
Pa first
85
Pa last
238
P.A. Now (θ)
332.4°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.15"
Mag pri
6.65
Mag sec
delta mag (ΔM)
Spectral class
F6IV (yellow-white)
Pri motion ra
-093
Sec motion ra
Pri motion dec
+024
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Bootes
SAO
45348
HIP
73637
Tycho2
3050-00175-1
HD
133484
HR
5612
BD
BD+45 2251
Distance
55.65
Distance ly
181.53
last precise pa
237.9
last precise sep
0.223
 
 
ORBITAL ELEMENTS
 
 
Period (P)170.88y± 8.91 Periastron (T)1999.39y± 2.81 Semi-major axis (a)0.626a± 0.047
Eccentricity (e)0.586± 0.028 Inclination (i)73.9°± 2.8 Longitude of periastron (ω)347.1°± 13.2
Node (Ω)222.2°± 4.9 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2007
label rho theta
2000 0.258 220.3
2001 0.263 223.0
2002 0.263 225.7
2003 0.259 228.4
2004 0.252 231.3
2005 0.242 234.3
2006 0.230 237.6
2007 0.217 241.3
2008 0.202 245.5
2009 0.187 250.5
2010 0.172 256.3
2011 0.158 263.1
2012 0.146 271.2
2013 0.136 280.5
2014 0.131 291.0
2015 0.129 302.1
2016 0.132 313.1
2017 0.138 323.3
2018 0.149 332.4
2019 0.162 340.1
2020 0.177 346.6
2021 0.194 351.9
2022 0.212 356.5
2023 0.231 0.3
2024 0.250 3.5
2025 0.269 6.2
2026 0.289 8.6
2027 0.308 10.7
2028 0.328 12.6
2029 0.347 14.2
2030 0.366 15.6

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