00516+2237 A  1808

 
 
00H 51M 36.99S +22 37' 24.4" P.A. 205.1 SEP 0.21 MAG 7.93,8.22 SP K0III DIST. 254.45 PC (830.02 L.Y.)
 
 
Coord 2000
00516+2237
Discov num
A  1808
Comp
Coord arcsec 2000
00 51 36.99 +22 37 24.4
Date first
1908
Date last
2008
Obs
55
Pa first
209
Pa last
200
P.A. Now (θ)
205.1°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.21"
Mag pri
7.93
Mag sec
8.22
delta mag (ΔM)
0.29
Spectral class
K0III (yellow-orange)
Pri motion ra
+012
Sec motion ra
Pri motion dec
+002
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Andromeda
SAO
74322
HIP
4030
Tycho2
1739-00186-1
HD
4934
ADS
701
BD
BD+21 111
Distance
254.45
Distance ly
830.02
last precise pa
199.7
last precise sep
0.19
 
 
ORBITAL ELEMENTS
 
 
Period (P)112.4y Periastron (T)1975.99y Semi-major axis (a)0.121a
Eccentricity (e)0.827 Inclination (i)17.8° Longitude of periastron (ω)231.9°
Node (Ω)163.1° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2004
label rho theta
2000 0.167 193.0
2001 0.170 193.9
2002 0.173 194.8
2003 0.176 195.6
2004 0.179 196.4
2005 0.182 197.2
2006 0.184 197.9
2007 0.187 198.6
2008 0.189 199.4
2009 0.191 200.0
2010 0.194 200.7
2011 0.196 201.4
2012 0.197 202.0
2013 0.199 202.7
2014 0.201 203.3
2015 0.203 203.9
2016 0.204 204.5
2017 0.205 205.1
2018 0.207 205.7
2019 0.208 206.3
2020 0.209 206.9
2021 0.210 207.4
2022 0.211 208.0
2023 0.212 208.6
2024 0.212 209.1
2025 0.213 209.7
2026 0.213 210.2
2027 0.214 210.8
2028 0.214 211.3
2029 0.214 211.9
2030 0.215 212.4

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