03217+0845 STF 380

 
 
03H 21M 43.84S +08 45' 23.5" P.A. 2.7 SEP 0.88 MAG 9.02,9.81 SP G0
 
 
Coord 2000
03217+0845
Discov num
STF 380
Comp
Coord arcsec 2000
03 21 43.84 +08 45 23.5
Date first
1829
Date last
2016
Obs
88
Pa first
90
Pa last
7
P.A. Now (θ)
2.7°
Sep first
1.5
Sep last
0.9
Sep. Now (ρ)
0.88"
Mag pri
9.02
Mag sec
9.81
delta mag (ΔM)
0.79
Spectral class
G0 (yellow)
Pri motion ra
-027
Sec motion ra
-027
Pri motion dec
-098
Sec motion dec
-098
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
Tycho2
0649-00737-1
HD
20837
ADS
2491
last precise pa
6.6
last precise sep
0.923
 
 
ORBITAL ELEMENTS
 
 
Period (P)520.754y Periastron (T)2114.34y Semi-major axis (a)0.9424a
Eccentricity (e)0.2705 Inclination (i)164.14° Longitude of periastron (ω)164.38°
Node (Ω)67.75° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1988
label rho theta
2000 0.938 14.4
2001 0.935 13.8
2002 0.932 13.1
2003 0.928 12.4
2004 0.925 11.8
2005 0.922 11.1
2006 0.918 10.4
2007 0.915 9.8
2008 0.912 9.1
2009 0.908 8.4
2010 0.905 7.7
2011 0.901 7.0
2012 0.898 6.3
2013 0.895 5.6
2014 0.891 4.9
2015 0.888 4.2
2016 0.884 3.4
2017 0.881 2.7
2018 0.878 2.0
2019 0.874 1.2
2020 0.871 0.5
2021 0.868 359.7
2022 0.864 359.0
2023 0.861 358.2
2024 0.857 357.4
2025 0.854 356.7
2026 0.851 355.9
2027 0.847 355.1
2028 0.844 354.3
2029 0.841 353.5
2030 0.837 352.7

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