02366+1227 MCA 7 (31 Ari)

 
 
02h 36m 37.91s +12° 26' 51.4" P.A. 148.00 sep 0.1 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 2021 Obs 58
Pa first 153 Pa last 148.3 P.A. Now (θ) 349.4°
Sep first 0.1 Sep last 0.072 Sep. Now (ρ) 0.055"
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 Gaia DR2 26484834227184896 HD 16234 HR 763
GC 3133 BD BD+11 360 Flamsteed 31 Arietis Flamsteed name 31 Ari
FK5 2179 Distance 34.73 Distance ly 113.29
 
 
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 Notesn ReferenceDoc2016d
Equinox2000 Last observation2010 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 9.2 0.040
2001 315.3 0.073
2002 181.5 0.044
2003 129.9 0.064
2004 349.4 0.055
2005 305.7 0.061
2006 164.9 0.059
2007 116.6 0.050
2008 338.1 0.069
2009 290.4 0.046
2010 154.6 0.070
2011 92.1 0.036
2012 330.0 0.077
2013 260.7 0.033
2014 146.6 0.076
2015 47.8 0.030
2016 322.9 0.078
2017 214.1 0.031
2018 138.9 0.073
2019 9.2 0.040
2020 315.3 0.073
2021 181.5 0.044
2022 129.9 0.064
2023 349.4 0.055
2024 305.7 0.061
2025 164.9 0.059
2026 116.6 0.050
2027 338.1 0.069
2028 290.4 0.046
2029 154.6 0.070
2030 92.1 0.036


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



 
 


wds02366%2B1227c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic