02211+4246 STF 248

 
 
02H 21M 03.67S +42 46' 27.1" P.A. 203.9 SEP 0.69 MAG 9.55,9.83 SP K0 DIST. 55.62 PC (181.43 L.Y.)
 
 
Coord 2000
02211+4246
Discov num
STF 248
Comp
Coord arcsec 2000
02 21 03.67 +42 46 27.1
Date first
1830
Date last
2016
Obs
83
Pa first
164
Pa last
206
P.A. Now (θ)
203.9°
Sep first
1.7
Sep last
0.8
Sep. Now (ρ)
0.69"
Mag pri
9.55
Mag sec
9.83
delta mag (ΔM)
0.28
Spectral class
K0 (yellow-orange)
Pri motion ra
+025
Sec motion ra
Pri motion dec
-205
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Andromeda
SAO
37964
HIP
10952
Tycho2
2839-01453-1
ADS
1786
BD
BD+42 501
Distance
55.62
Distance ly
181.43
last precise pa
206
last precise sep
0.75
 
 
ORBITAL ELEMENTS
 
 
Period (P)318y± 17 Periastron (T)1989.2y± 0.14 Semi-major axis (a)0.94a± 0.022
Eccentricity (e)0.802± 0.0072 Inclination (i)147°± 2.3 Longitude of periastron (ω)175°± 3.7
Node (Ω)158°± 3.5 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.337 240.0
2001 0.359 235.8
2002 0.381 232.2
2003 0.403 228.9
2004 0.424 226.0
2005 0.446 223.3
2006 0.468 220.9
2007 0.489 218.7
2008 0.510 216.7
2009 0.531 214.9
2010 0.551 213.1
2011 0.572 211.6
2012 0.592 210.1
2013 0.611 208.7
2014 0.631 207.4
2015 0.650 206.2
2016 0.669 205.0
2017 0.687 203.9
2018 0.706 202.9
2019 0.724 201.9
2020 0.741 201.0
2021 0.759 200.1
2022 0.776 199.2
2023 0.793 198.4
2024 0.810 197.6
2025 0.826 196.9
2026 0.843 196.2
2027 0.859 195.5
2028 0.874 194.8
2029 0.890 194.2
2030 0.905 193.6

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