02212+2136 HU  425Aa,Ab

 
 
02H 21M 11.45S +21 35' 21.4" P.A. 51.8 SEP 0.28 MAG 10.74,11.21 SP G8V DIST. 166.67 PC (543.68 L.Y.)
 
 
Coord 2000
02212+2136
Discov num
HU  425
Comp
Aa,Ab
Coord arcsec 2000
02 21 11.45 +21 35 21.4
Date first
1901
Date last
2009
Obs
25
Pa first
25
Pa last
149
P.A. Now (θ)
51.8°
Sep first
0.4
Sep last
0.6
Sep. Now (ρ)
0.28"
Mag pri
10.74
Mag sec
11.21
delta mag (ΔM)
0.47
Spectral class
G8V (yellow)
Pri motion ra
+021
Sec motion ra
Pri motion dec
-019
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
02212+2136 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 02212+2136 HU 425 Aa,Ab 1901 2009 25 52 0.3 10.74 11.21 0.47 Y <===
Show 02212+2136 FMR 24 AB 1994 2009 6 101 11.3 10.10 16.10 6.00
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Aries
HIP
10959
Tycho2
1221-00800-1
ADS
1796
BD
BD+20 381
Distance
166.67
Distance ly
543.68
last precise pa
149.4
last precise sep
0.623
 
 
ORBITAL ELEMENTS
 
 
Period (P)125y Periastron (T)1975y Semi-major axis (a)0.355a
Eccentricity (e)0.06 Inclination (i)134° Longitude of periastron (ω)172°
Node (Ω) Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.257 116.8
2001 0.254 112.9
2002 0.251 109.0
2003 0.249 105.0
2004 0.248 100.9
2005 0.247 96.8
2006 0.247 92.7
2007 0.248 88.6
2008 0.249 84.5
2009 0.251 80.5
2010 0.254 76.5
2011 0.257 72.7
2012 0.260 68.9
2013 0.265 65.3
2014 0.269 61.7
2015 0.274 58.3
2016 0.279 55.0
2017 0.284 51.8
2018 0.290 48.8
2019 0.296 45.9
2020 0.302 43.0
2021 0.307 40.3
2022 0.313 37.7
2023 0.319 35.2
2024 0.325 32.8
2025 0.330 30.4
2026 0.335 28.1
2027 0.340 25.9
2028 0.345 23.8
2029 0.350 21.7
2030 0.354 19.7

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