13237+1257 HDS 1880
13h 23m 42.55s +12° 56' 50.5" P.A. 138.00 sep 0.1 mag 9.59,10.94 Sp F5 dist. 129.53 pc (422.53 l.y.)
| Coord 2000 |
13237+1257 |
|
Discov num |
HDS1880 |
|
Comp |
|
|
Coord arcsec 2000 |
13 23 42.55 +12 56 50.5 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
12 |
|
| Pa first |
37 |
|
Pa last |
138.2 |
|
P.A. Now (θ) |
138.2° |
|
| Sep first |
0.3 |
|
Sep last |
0.107 |
|
Sep. Now (ρ) |
0.107" |
|
| Mag pri |
9.59 |
|
Mag sec |
10.94 |
|
delta mag (ΔM) |
1.35 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
-018 |
|
Sec motion ra |
|
|
| Pri motion dec |
+003 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Virgo |
|
HIP |
65358 |
|
Tycho2 |
0897-00238-1 |
|
Gaia DR2 |
3739662594820319104 |
|
| BD |
BD+13 2661 |
|
Distance |
129.53 |
|
Distance ly |
422.53 |
|
ORBITAL ELEMENTS
| Period (P) | 100y | |
Periastron (T) | 2016.232y | |
Semi-major axis (a) | 0.196a | |
| Eccentricity (e) | 0.746 | |
Inclination (i) | 159.1° | |
Longitude of periastron (ω) | 268.4° | |
| Node (Ω) | 148.8° | |
Notes | n | |
Reference | Tok2018e | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
23.4 |
0.213 |
| 2001 |
21.4 |
0.205 |
| 2002 |
19.3 |
0.198 |
| 2003 |
17.0 |
0.189 |
| 2004 |
14.5 |
0.181 |
| 2005 |
11.7 |
0.172 |
| 2006 |
8.6 |
0.163 |
| 2007 |
5.2 |
0.153 |
| 2008 |
1.2 |
0.142 |
| 2009 |
356.6 |
0.131 |
| 2010 |
351.2 |
0.120 |
| 2011 |
344.5 |
0.107 |
| 2012 |
336.0 |
0.094 |
| 2013 |
324.6 |
0.081 |
| 2014 |
308.6 |
0.067 |
| 2015 |
284.6 |
0.054 |
| 2016 |
249.7 |
0.047 |
| 2017 |
211.2 |
0.050 |
| 2018 |
182.0 |
0.060 |
| 2019 |
162.7 |
0.074 |
| 2020 |
149.4 |
0.088 |
| 2021 |
139.8 |
0.101 |
| 2022 |
132.4 |
0.114 |
| 2023 |
126.5 |
0.126 |
| 2024 |
121.5 |
0.138 |
| 2025 |
117.3 |
0.149 |
| 2026 |
113.7 |
0.159 |
| 2027 |
110.5 |
0.168 |
| 2028 |
107.6 |
0.178 |
| 2029 |
105.0 |
0.186 |
| 2030 |
102.6 |
0.195 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
