12335+0901 REU   1

 
 
12H 33M 17.36S +09 01' 15.8" P.A. 322.8 SEP 1.17 MAG 12.60,12.60 SP M5.5V
 
 
Coord 2000
12335+0901
Discov num
REU   1
Comp
Coord arcsec 2000
12 33 17.36 +09 01 15.8
Date first
1938
Date last
2012
Obs
73
Pa first
322
Pa last
169
P.A. Now (θ)
322.8°
Sep first
0.7
Sep last
0.4
Sep. Now (ρ)
1.17"
Mag pri
12.60
Mag sec
12.60
delta mag (ΔM)
0
Spectral class
M5.5V (red)
Pri motion ra
-173
Sec motion ra
Pri motion dec
+022
Sec motion dec
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Virgo
last precise pa
169.2
last precise sep
0.41
 
 
ORBITAL ELEMENTS
 
 
Period (P)15.9y± 0.9 Periastron (T)1976.6y± 0.9 Semi-major axis (a)0.907a± 0.03
Eccentricity (e)0.3± 0.03 Inclination (i)102.3°± 0.8 Longitude of periastron (ω)-7.2°± 6
Node (Ω)143°± 1.9 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation1996
label rho theta
2000 1.148 325.8
2001 1.175 323.0
2002 1.121 320.2
2003 0.984 316.8
2004 0.765 311.9
2005 0.476 301.6
2006 0.188 255.7
2007 0.336 166.9
2008 0.586 148.6
2009 0.617 138.8
2010 0.420 125.0
2011 0.188 71.7
2012 0.353 355.9
2013 0.639 339.2
2014 0.881 332.6
2015 1.056 328.6
2016 1.154 325.5
2017 1.174 322.8
2018 1.111 319.9
2019 0.966 316.4
2020 0.739 311.2
2021 0.444 299.8
2022 0.175 244.1
2023 0.366 163.8
2024 0.601 147.5
2025 0.606 137.8
2026 0.393 122.7
2027 0.183 60.6
2028 0.381 353.1
2029 0.666 338.3
2030 0.902 332.1

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