15470+4143 HDS2222

 
 
15h 47m 02.15s +41 43' 11.0" P.A. 247.3 sep 0.09 mag 8.76,9.34 Sp F2 dist. 150.38 pc (490.54 l.y.)
 
 
Coord 2000
15470+4143
Discov num
HDS2222
Comp
Coord arcsec 2000
15 47 02.15 +41 43 11.0
Date first
1991
Date last
2012
Obs
6
Pa first
266
Pa last
141
P.A. Now (θ)
247.3°
Sep first
0.1
Sep last
0.0
Sep. Now (ρ)
0.09"
Mag pri
8.76
Mag sec
9.34
delta mag (ΔM)
0.58
Spectral class
F2 (yellow-white)
Pri motion ra
-021
Sec motion ra
Pri motion dec
+000
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
141.1
Precise sep
0.022
Constellation
Bootes
SAO
45724
HIP
77312
Tycho2
3057-00019-1
HD
141347
BD
BD+42 2638
Distance
150.38
Distance ly
490.54
last precise pa
141.1
last precise sep
0.022
 
 
ORBITAL ELEMENTS
 
 
Period (P)31.926y± 0.182 Periastron (T)2011.375y± 0.177 Semi-major axis (a)0.0848a± 0.003
Eccentricity (e)0.488± 0.021 Inclination (i)57.9°± 0.7 Longitude of periastron (ω)54.2°± 2.6
Node (Ω)65.5°± 0.9 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.068 309.5
2001 0.063 318.3
2002 0.059 328.5
2003 0.056 340.0
2004 0.054 352.5
2005 0.054 5.5
2006 0.054 18.4
2007 0.056 30.8
2008 0.056 42.8
2009 0.054 54.9
2010 0.048 68.9
2011 0.037 89.7
2012 0.025 132.4
2013 0.030 188.7
2014 0.046 215.8
2015 0.062 228.8
2016 0.075 236.8
2017 0.086 242.6
2018 0.093 247.3
2019 0.099 251.4
2020 0.103 255.1
2021 0.105 258.6
2022 0.105 262.0
2023 0.105 265.3
2024 0.103 268.8
2025 0.101 272.4
2026 0.097 276.3
2027 0.093 280.4
2028 0.089 284.9
2029 0.083 290.0
2030 0.078 295.8

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

grafico orbita





wds15470%2B4143a.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
15470+4143 HDS2222 1991 1 266 0.1 8.76 9.34 F2 154702.15+414311.0
15470+4143 HDS2222 2010 2 78 0.0 8.76 9.34 F2 D 154702.15+414311.0
15470+4143 HDS2222 2012 6 141 0.0 8.76 9.34 F2 154702.15+414311.0

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