12349+2238 WRH 12 (23 Com)
12h 34m 51.12s +22° 37' 45.1" P.A. 8.00 sep 0.4 mag 4.96,6.90 Sp A0IV dist. 95.06 pc (310.09 l.y.)
| Coord 2000 |
12349+2238 |
|
Discov num |
WRH 12 |
|
Comp |
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Coord arcsec 2000 |
12 34 51.12 +22 37 45.1 |
|
| Date first |
1937 |
|
Date last |
2020 |
|
Obs |
108 |
|
| Pa first |
90 |
|
Pa last |
8 |
|
P.A. Now (θ) |
7.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.352 |
|
Sep. Now (ρ) |
0.293" |
|
| 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 |
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| 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 |
|
Gaia DR2 |
3958719258494268288 |
|
HD |
109485 |
|
HR |
4789 |
|
| GC |
17142 |
|
BD |
BD+23 2475 |
|
Flamsteed |
23 Comae Berenices |
|
Flamsteed name |
23 Com |
|
| FK5 |
1323 |
|
Distance |
95.06 |
|
Distance ly |
310.09 |
|
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° | |
Notes | n | |
Reference | Hrt2014b | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
26.1 |
0.170 |
| 2001 |
23.9 |
0.202 |
| 2002 |
22.3 |
0.230 |
| 2003 |
21.1 |
0.254 |
| 2004 |
20.0 |
0.274 |
| 2005 |
19.1 |
0.291 |
| 2006 |
18.2 |
0.307 |
| 2007 |
17.5 |
0.319 |
| 2008 |
16.8 |
0.330 |
| 2009 |
16.1 |
0.339 |
| 2010 |
15.5 |
0.346 |
| 2011 |
14.9 |
0.352 |
| 2012 |
14.3 |
0.355 |
| 2013 |
13.7 |
0.358 |
| 2014 |
13.1 |
0.358 |
| 2015 |
12.5 |
0.357 |
| 2016 |
11.9 |
0.355 |
| 2017 |
11.3 |
0.351 |
| 2018 |
10.7 |
0.345 |
| 2019 |
10.1 |
0.338 |
| 2020 |
9.4 |
0.330 |
| 2021 |
8.7 |
0.319 |
| 2022 |
8.0 |
0.307 |
| 2023 |
7.1 |
0.293 |
| 2024 |
6.2 |
0.277 |
| 2025 |
5.2 |
0.259 |
| 2026 |
4.0 |
0.239 |
| 2027 |
2.6 |
0.216 |
| 2028 |
0.8 |
0.190 |
| 2029 |
358.3 |
0.161 |
| 2030 |
354.7 |
0.127 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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