12349+2238 WRH  12 (23 Com)

 
 
12H 34M 51.12S +22 37' 45.1" P.A. 10.7 SEP 0.35 MAG 4.96,6.90 SP A0IV DIST. 95.06 PC (310.09 L.Y.)
 
 
Coord 2000
12349+2238
Discov num
WRH  12
Comp
Coord arcsec 2000
12 34 51.12 +22 37 45.1
Date first
1937
Date last
2014
Obs
105
Pa first
90
Pa last
11
P.A. Now (θ)
10.7°
Sep first
0.2
Sep last
0.4
Sep. Now (ρ)
0.35"
Mag pri
4.96
Mag sec
6.90
delta mag (ΔM)
1.94
Spectral class
A0IV (white)
Pri motion ra
-065
Sec motion ra
Pri motion dec
+021
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
23 Com
Constellation
Coma Berenices
SAO
82390
HIP
61394
Tycho2
1990-03784-1
HD
109485
HR
4789
GC
17142
BD
BD+23 2475
Flamsteed
23 Comae Berenices
Flamsteed name
23 Com
Distance
95.06
Distance ly
310.09
last precise pa
11
last precise sep
0.35
 
 
ORBITAL ELEMENTS
 
 
Period (P)36y Periastron (T)1960.81y Semi-major axis (a)0.192a
Eccentricity (e)0.91 Inclination (i)119.1° Longitude of periastron (ω)14.7°
Node (Ω)199.9° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.170 26.1
2001 0.202 23.9
2002 0.230 22.3
2003 0.254 21.1
2004 0.274 20.0
2005 0.291 19.1
2006 0.307 18.2
2007 0.319 17.5
2008 0.330 16.8
2009 0.339 16.1
2010 0.346 15.5
2011 0.352 14.9
2012 0.355 14.3
2013 0.358 13.7
2014 0.358 13.1
2015 0.357 12.5
2016 0.355 11.9
2017 0.351 11.3
2018 0.345 10.7
2019 0.338 10.1
2020 0.330 9.4
2021 0.319 8.7
2022 0.307 8.0
2023 0.293 7.1
2024 0.277 6.2
2025 0.259 5.2
2026 0.239 4.0
2027 0.216 2.6
2028 0.190 0.8
2029 0.161 358.3
2030 0.127 354.7

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