02186+4017 EGG   2Aa,Ab

 
 
02H 18M 36.27S +40 16' 43.7" P.A. 117.2 SEP 0.14 MAG 7.90,7.90 SP F3V DIST. 97.47 PC (317.95 L.Y.)
 
 
Coord 2000
02186+4017
Discov num
EGG   2
Comp
Aa,Ab
Coord arcsec 2000
02 18 36.27 +40 16 43.7
Date first
1965
Date last
2014
Obs
22
Pa first
340
Pa last
97
P.A. Now (θ)
117.2°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.14"
Mag pri
7.90
Mag sec
7.90
delta mag (ΔM)
0
Spectral class
F3V (yellow-white)
Pri motion ra
-028
Sec motion ra
Pri motion dec
+004
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
02186+4017 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 37940 02186+4017 EGG 2 Aa,Ab 1965 2014 22 117 0.1 7.90 7.90 0.00 Y <===
Show 37940 02186+4017 STF 245 AB 1830 2015 53 294 11.0 7.26 8.03 0.77
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Andromeda
SAO
37940
HIP
10772
Tycho2
2834-01763-1
HD
14189
ADS
1763
BD
BD+39 517
Distance
97.47
Distance ly
317.95
last precise pa
96.8
last precise sep
0.082
 
 
ORBITAL ELEMENTS
 
 
Period (P)29.71y± 0.07 Periastron (T)2013.02y± 0.05 Semi-major axis (a)136m± 0.9
Eccentricity (e)0.813± 0.005 Inclination (i)± 6 Longitude of periastron (ω)164°± 2
Node (Ω)166°± 3 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.244 154.1
2001 0.240 156.3
2002 0.235 158.5
2003 0.229 161.0
2004 0.220 163.5
2005 0.210 166.3
2006 0.197 169.4
2007 0.183 173.0
2008 0.166 177.3
2009 0.146 182.6
2010 0.122 189.9
2011 0.093 201.1
2012 0.058 224.4
2013 0.025 326.1
2014 0.057 73.8
2015 0.092 98.2
2016 0.120 109.8
2017 0.144 117.2
2018 0.165 122.7
2019 0.182 127.0
2020 0.196 130.6
2021 0.209 133.7
2022 0.219 136.6
2023 0.228 139.2
2024 0.235 141.6
2025 0.240 143.9
2026 0.244 146.1
2027 0.246 148.2
2028 0.246 150.4
2029 0.246 152.5
2030 0.243 154.7

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