12160+0538 STF1621

 
 
12H 15M 58.34S +05 38' 24.8" P.A. 45.9 SEP 1.7 MAG 10.22,10.59 SP K8 DIST. 28.99 PC (94.57 L.Y.)
 
 
Coord 2000
12160+0538
Discov num
STF1621
Comp
Coord arcsec 2000
12 15 58.34 +05 38 24.8
Date first
1830
Date last
2010
Obs
100
Pa first
124
Pa last
43
P.A. Now (θ)
45.9°
Sep first
3.4
Sep last
1.5
Sep. Now (ρ)
1.7"
Mag pri
10.22
Mag sec
10.59
delta mag (ΔM)
0.37
Spectral class
K8 (yellow-orange)
Pri motion ra
-320
Sec motion ra
-320
Pri motion dec
-066
Sec motion dec
-066
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Virgo
HIP
59816
Tycho2
0287-00337-1
ADS
8486
BD
BD+06 2573
Distance
28.99
Distance ly
94.57
last precise pa
42.7
last precise sep
1.521
 
 
ORBITAL ELEMENTS
 
 
Period (P)1100y Periastron (T)1973.67y Semi-major axis (a)3.5a
Eccentricity (e)0.89 Inclination (i)26° Longitude of periastron (ω)275°
Node (Ω) Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 1.226 32.7
2001 1.257 33.8
2002 1.287 34.8
2003 1.317 35.8
2004 1.347 36.7
2005 1.376 37.6
2006 1.405 38.4
2007 1.434 39.2
2008 1.462 40.0
2009 1.490 40.8
2010 1.518 41.5
2011 1.545 42.2
2012 1.572 42.9
2013 1.599 43.5
2014 1.626 44.2
2015 1.652 44.8
2016 1.678 45.4
2017 1.704 45.9
2018 1.729 46.5
2019 1.755 47.0
2020 1.780 47.6
2021 1.805 48.1
2022 1.829 48.6
2023 1.854 49.1
2024 1.878 49.5
2025 1.902 50.0
2026 1.926 50.4
2027 1.949 50.9
2028 1.973 51.3
2029 1.996 51.7
2030 2.019 52.1

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