02288+3215 WOR   2

 
 
02H 28M 46.49S +32 15' 34.2" P.A. 292.3 SEP 0.2 MAG 10.13,10.84 SP M0P DIST. 26.17 PC (85.37 L.Y.)
 
 
Coord 2000
02288+3215
Discov num
WOR   2
Comp
Coord arcsec 2000
02 28 46.49 +32 15 34.2
Date first
1959
Date last
2008
Obs
21
Pa first
105
Pa last
120
P.A. Now (θ)
292.3°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.2"
Mag pri
10.13
Mag sec
10.84
delta mag (ΔM)
0.71
Spectral class
M0p (red)
Pri motion ra
+445
Sec motion ra
Pri motion dec
+096
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Triangulum
HIP
11542
Tycho2
2327-00400-1
GL
Gl 99A
BD
BD+31 434
Distance
26.17
Distance ly
85.37
last precise pa
119.8
last precise sep
0.261
 
 
ORBITAL ELEMENTS
 
 
Period (P)24.07y± 0.5 Periastron (T)1987.35y± 3 Semi-major axis (a)0.361a± 0.005
Eccentricity (e)0.296± 0.02 Inclination (i)82.9°± 4 Longitude of periastron (ω)122.5°± 10
Node (Ω)100.6°± 7 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2004
label rho theta
2000 0.289 91.5
2001 0.337 93.9
2002 0.374 95.7
2003 0.398 97.2
2004 0.407 98.6
2005 0.399 100.1
2006 0.372 101.6
2007 0.323 103.5
2008 0.249 106.3
2009 0.153 112.2
2010 0.046 145.9
2011 0.094 262.2
2012 0.195 274.5
2013 0.263 278.8
2014 0.291 281.8
2015 0.284 284.5
2016 0.250 287.7
2017 0.199 292.3
2018 0.138 300.6
2019 0.078 322.2
2020 0.057 26.2
2021 0.104 68.7
2022 0.168 81.9
2023 0.230 87.8
2024 0.286 91.3
2025 0.334 93.7
2026 0.371 95.6
2027 0.396 97.1
2028 0.407 98.5
2029 0.401 100.0
2030 0.375 101.5

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