12306+0943 STF1647

 
 
12H 30M 33.75S +09 42' 56.4" P.A. 252.1 SEP 1.24 MAG 8.09,8.37 SP F2 DIST. 92.51 PC (301.77 L.Y.)
 
 
Coord 2000
12306+0943
Discov num
STF1647
Comp
Coord arcsec 2000
12 30 33.75 +09 42 56.4
Date first
1828
Date last
2015
Obs
276
Pa first
201
Pa last
248
P.A. Now (θ)
252.1°
Sep first
1.2
Sep last
1.2
Sep. Now (ρ)
1.24"
Mag pri
8.09
Mag sec
8.37
delta mag (ΔM)
0.28
Spectral class
F2 (yellow-white)
Pri motion ra
+051
Sec motion ra
+051
Pri motion dec
-058
Sec motion dec
-058
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Virgo
HIP
61035
Tycho2
0874-00223-1
HD
108875
ADS
8575
BD
BD+10 2432
Distance
92.51
Distance ly
301.77
last precise pa
247.9
last precise sep
1.22
 
 
ORBITAL ELEMENTS
 
 
Period (P)4273y Periastron (T)1864.3y Semi-major axis (a)4.358a
Eccentricity (e)0.69 Inclination (i)67° Longitude of periastron (ω)341.8°
Node (Ω)221.5° Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation1965
label rho theta
2000 1.281 247.3
2001 1.279 247.5
2002 1.276 247.8
2003 1.274 248.1
2004 1.271 248.4
2005 1.269 248.6
2006 1.266 248.9
2007 1.263 249.2
2008 1.261 249.5
2009 1.258 249.8
2010 1.256 250.1
2011 1.253 250.4
2012 1.251 250.6
2013 1.248 250.9
2014 1.245 251.2
2015 1.243 251.5
2016 1.240 251.8
2017 1.238 252.1
2018 1.235 252.4
2019 1.232 252.7
2020 1.230 253.0
2021 1.227 253.3
2022 1.225 253.6
2023 1.222 253.9
2024 1.219 254.2
2025 1.217 254.5
2026 1.214 254.8
2027 1.212 255.1
2028 1.209 255.4
2029 1.207 255.7
2030 1.204 256.1

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