12572+0818 FIN 380

 
 
12H 57M 13.62S +08 17' 37.5" P.A. 161.1 SEP 0.32 MAG 7.50,7.88 SP F5 DIST. 101.73 PC (331.84 L.Y.)
 
 
Coord 2000
12572+0818
Discov num
FIN 380
Comp
Coord arcsec 2000
12 57 13.62 +08 17 37.5
Date first
1962
Date last
2014
Obs
49
Pa first
162
Pa last
162
P.A. Now (θ)
161.1°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.32"
Mag pri
7.50
Mag sec
7.88
delta mag (ΔM)
0.38
Spectral class
F5 (yellow-white)
Pri motion ra
-096
Sec motion ra
Pri motion dec
+008
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Virgo
HIP
63221
Tycho2
0883-00370-1
HD
112503
BD
BD+09 2696
Distance
101.73
Distance ly
331.84
last precise pa
162
last precise sep
0.237
 
 
ORBITAL ELEMENTS
 
 
Period (P)84.9y Periastron (T)1971.22y Semi-major axis (a)0.219a
Eccentricity (e)0.891 Inclination (i)83.2° Longitude of periastron (ω)138.8°
Node (Ω)166.5° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2005
label rho theta
2000 0.256 158.8
2001 0.261 158.9
2002 0.267 159.1
2003 0.272 159.2
2004 0.277 159.4
2005 0.282 159.5
2006 0.287 159.7
2007 0.291 159.8
2008 0.295 159.9
2009 0.299 160.0
2010 0.302 160.2
2011 0.306 160.3
2012 0.309 160.4
2013 0.312 160.5
2014 0.314 160.6
2015 0.316 160.7
2016 0.318 160.8
2017 0.320 160.9
2018 0.322 161.1
2019 0.323 161.2
2020 0.324 161.3
2021 0.325 161.4
2022 0.325 161.5
2023 0.325 161.6
2024 0.325 161.7
2025 0.325 161.8
2026 0.324 161.9
2027 0.323 162.0
2028 0.322 162.1
2029 0.320 162.2
2030 0.318 162.3

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