20104-1923 HDS 2873 (HD 191434)
20h 10m 25.46s -19° 22' 59.4" P.A. 226.00 sep 0.1 mag 7.49,10.22 Sp G0V dist. 61.09 pc (199.28 l.y.)
| Coord 2000 |
20104-1923 |
|
Discov num |
HDS2873 |
|
Comp |
|
|
Coord arcsec 2000 |
20 10 25.46 -19 22 59.4 |
|
| Date first |
1991 |
|
Date last |
2020 |
|
Obs |
11 |
|
| Pa first |
204 |
|
Pa last |
225.6 |
|
P.A. Now (θ) |
225.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.136 |
|
Sep. Now (ρ) |
0.136" |
|
| Mag pri |
7.49 |
|
Mag sec |
10.22 |
|
delta mag (ΔM) |
2.73 |
|
Spectral class |
G0V (yellow) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
|
|
| Pri motion dec |
-127 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 191434 |
|
Constellation |
Capricornus |
|
SAO |
163313 |
|
HIP |
99391 |
|
| Tycho2 |
6323-02047-1 |
|
Gaia DR2 |
6866542478736575616 |
|
HD |
191434 |
|
GC |
27978 |
|
| BD |
BD-19 5731 |
|
Distance |
61.09 |
|
Distance ly |
199.28 |
|
ORBITAL ELEMENTS
| Period (P) | 90y | |
Periastron (T) | 2007.46y | ± 0.67 |
Semi-major axis (a) | 0.3843a | ± 0.0087 |
| Eccentricity (e) | 0.484 | ± 0.006 |
Inclination (i) | 94° | ± 0.4 |
Longitude of periastron (ω) | -0.3° | ± 4.3 |
| Node (Ω) | 35.2° | ± 0.9 |
Notes | | |
Reference | Tok2016e | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
54.8 |
0.055 |
| 2001 |
46.9 |
0.083 |
| 2002 |
43.0 |
0.111 |
| 2003 |
40.6 |
0.136 |
| 2004 |
38.9 |
0.159 |
| 2005 |
37.7 |
0.177 |
| 2006 |
36.6 |
0.191 |
| 2007 |
35.6 |
0.197 |
| 2008 |
34.7 |
0.197 |
| 2009 |
33.8 |
0.191 |
| 2010 |
32.7 |
0.177 |
| 2011 |
31.4 |
0.159 |
| 2012 |
29.8 |
0.136 |
| 2013 |
27.4 |
0.111 |
| 2014 |
23.5 |
0.083 |
| 2015 |
15.6 |
0.055 |
| 2016 |
352.7 |
0.029 |
| 2017 |
282.0 |
0.023 |
| 2018 |
244.1 |
0.045 |
| 2019 |
233.1 |
0.073 |
| 2020 |
228.2 |
0.102 |
| 2021 |
225.5 |
0.130 |
| 2022 |
223.7 |
0.158 |
| 2023 |
222.5 |
0.185 |
| 2024 |
221.6 |
0.211 |
| 2025 |
220.9 |
0.237 |
| 2026 |
220.3 |
0.261 |
| 2027 |
219.8 |
0.284 |
| 2028 |
219.4 |
0.307 |
| 2029 |
219.0 |
0.328 |
| 2030 |
218.7 |
0.349 |
| 2031 |
218.4 |
0.369 |
| 2032 |
218.2 |
0.387 |
| 2033 |
217.9 |
0.405 |
| 2034 |
217.7 |
0.422 |
| 2035 |
217.5 |
0.437 |
| 2036 |
217.4 |
0.452 |
| 2037 |
217.2 |
0.466 |
| 2038 |
217.0 |
0.479 |
| 2039 |
216.9 |
0.492 |
| 2040 |
216.7 |
0.503 |
| 2041 |
216.6 |
0.513 |
| 2042 |
216.5 |
0.523 |
| 2043 |
216.3 |
0.531 |
| 2044 |
216.2 |
0.539 |
| 2045 |
216.1 |
0.546 |
| 2046 |
216.0 |
0.552 |
| 2047 |
215.8 |
0.557 |
| 2048 |
215.7 |
0.561 |
| 2049 |
215.6 |
0.565 |
| 2050 |
215.5 |
0.568 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
