02366+1227 MCA   7 (31 Ari)

 
 
02H 36M 37.91S +12 26' 51.4" P.A. 214.1 SEP 0.03 MAG 5.68,5.78 SP F7V DIST. 34.73 PC (113.29 L.Y.)
 
 
Coord 2000
02366+1227
Discov num
MCA   7
Comp
Coord arcsec 2000
02 36 37.91 +12 26 51.4
Date first
1979
Date last
2012
Obs
44
Pa first
333
Pa last
148
P.A. Now (θ)
214.1°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.03"
Mag pri
5.68
Mag sec
5.78
delta mag (ΔM)
0.1
Spectral class
F7V (yellow-white)
Pri motion ra
+284
Sec motion ra
Pri motion dec
-088
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
31 Ari
Constellation
Aries
SAO
93022
HIP
12153
Tycho2
0642-00047-1
HD
16234
HR
763
GC
3133
BD
BD+11 360
Flamsteed
31 Arietis
Flamsteed name
31 Ari
Distance
34.73
Distance ly
113.29
last precise pa
147.5
last precise sep
0.072
 
 
ORBITAL ELEMENTS
 
 
Period (P)3.8y± 0.1 Periastron (T)2010.28y± 0.15 Semi-major axis (a)0.077a± 0.001
Eccentricity (e)0.017± 0.002 Inclination (i)112.7°± 0.5 Longitude of periastron (ω)3.7°± 15
Node (Ω)145°± 0.5 Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.040 9.2
2001 0.073 315.3
2002 0.044 181.5
2003 0.064 129.9
2004 0.055 349.4
2005 0.061 305.7
2006 0.059 164.9
2007 0.050 116.6
2008 0.069 338.1
2009 0.046 290.4
2010 0.070 154.6
2011 0.036 92.1
2012 0.077 330.0
2013 0.033 260.7
2014 0.076 146.6
2015 0.030 47.8
2016 0.078 322.9
2017 0.031 214.1
2018 0.073 138.9
2019 0.040 9.2
2020 0.073 315.3
2021 0.044 181.5
2022 0.064 129.9
2023 0.055 349.4
2024 0.061 305.7
2025 0.059 164.9
2026 0.050 116.6
2027 0.069 338.1
2028 0.046 290.4
2029 0.070 154.6
2030 0.036 92.1

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