11368-1221 BU  456

 
 
11H 36M 49.86S -12 21' 02.7" P.A. 161.9 SEP 1.17 MAG 9.56,9.73 SP G5 DIST. 48.19 PC (157.2 L.Y.)
 
 
Coord 2000
11368-1221
Discov num
BU  456
Comp
Coord arcsec 2000
11 36 49.86 -12 21 02.7
Date first
1877
Date last
2016
Obs
78
Pa first
68
Pa last
168
P.A. Now (θ)
161.9°
Sep first
0.6
Sep last
1.3
Sep. Now (ρ)
1.17"
Mag pri
9.56
Mag sec
9.73
delta mag (ΔM)
0.17
Spectral class
G5 (yellow)
Pri motion ra
+007
Sec motion ra
+007
Pri motion dec
-046
Sec motion dec
-046
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Crater
SAO
156786
HIP
56641
Tycho2
5513-00100-1
HD
100922
ADS
8239
BD
BD-11 3136
Distance
48.19
Distance ly
157.2
last precise pa
168.3
last precise sep
1.267
 
 
ORBITAL ELEMENTS
 
 
Period (P)706y± 191 Periastron (T)1914.42y± 0.58 Semi-major axis (a)1.69a± 0.09
Eccentricity (e)0.748± 0.046 Inclination (i)53.3°± 1.9 Longitude of periastron (ω)327.1°± 2.3
Node (Ω)42.3°± 1.32 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 1.006 153.5
2001 1.016 154.1
2002 1.026 154.7
2003 1.035 155.2
2004 1.045 155.7
2005 1.055 156.3
2006 1.065 156.8
2007 1.074 157.3
2008 1.084 157.8
2009 1.094 158.3
2010 1.104 158.7
2011 1.113 159.2
2012 1.123 159.7
2013 1.133 160.1
2014 1.142 160.6
2015 1.152 161.0
2016 1.162 161.4
2017 1.171 161.9
2018 1.181 162.3
2019 1.191 162.7
2020 1.200 163.1
2021 1.210 163.5
2022 1.220 163.9
2023 1.229 164.3
2024 1.239 164.7
2025 1.248 165.0
2026 1.258 165.4
2027 1.267 165.8
2028 1.277 166.1
2029 1.286 166.5
2030 1.296 166.8

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