02186+4017 EGG 2 Aa,Ab

 
 
02h 18m 36.27s +40° 16' 43.7" P.A. 97.00 sep 0.1 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 96.8 P.A. Now (θ) 139.2°
Sep first 0.2 Sep last 0.082 Sep. Now (ρ) 0.228"
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 wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 37940 02 18 36 +40 16 44 EGG 2 Aa,Ab 2014 22 97 0.1 7.90 7.90 0.00 Y <===
Show HD 14189 37940 02 18 36 +40 16 44 STF 245 AB 2020 60 293 11.3 7.26 8.03 0.77
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Andromeda SAO 37940 HIP 10772 Tycho2 2834-01763-1
Gaia DR2 332903778403980544 HD 14189 ADS 1763 BD BD+39 517
Distance 97.47 Distance ly 317.95
 
 
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 Notesn ReferenceHor2015b
Equinox2000 Last observation2014 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 154.1 0.244
2001 156.3 0.240
2002 158.5 0.235
2003 161.0 0.229
2004 163.5 0.220
2005 166.3 0.210
2006 169.4 0.197
2007 173.0 0.183
2008 177.3 0.166
2009 182.6 0.146
2010 189.9 0.122
2011 201.1 0.093
2012 224.4 0.058
2013 326.1 0.025
2014 73.8 0.057
2015 98.2 0.092
2016 109.8 0.120
2017 117.2 0.144
2018 122.7 0.165
2019 127.0 0.182
2020 130.6 0.196
2021 133.7 0.209
2022 136.6 0.219
2023 139.2 0.228
2024 141.6 0.235
2025 143.9 0.240
2026 146.1 0.244
2027 148.2 0.246
2028 150.4 0.246
2029 152.5 0.246
2030 154.7 0.243


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds02186%2B4017c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic