21469+0051 STF 2825 (HD 207136)
21h 46m 53.48s +00° 51' 02.9" P.A. 156.00 sep 0.4 mag 8.14,9.06 Sp F3V dist. 121.65 pc (396.82 l.y.)
| Coord 2000 |
21469+0051 |
|
Discov num |
STF2825 |
|
Comp |
|
|
Coord arcsec 2000 |
21 46 53.48 +00 51 02.9 |
|
| Date first |
1827 |
|
Date last |
2011 |
|
Obs |
116 |
|
| Pa first |
100 |
|
Pa last |
155.8 |
|
P.A. Now (θ) |
155.8° |
|
| Sep first |
1.1 |
|
Sep last |
0.37 |
|
Sep. Now (ρ) |
0.37" |
|
| Mag pri |
8.14 |
|
Mag sec |
9.06 |
|
delta mag (ΔM) |
0.92 |
|
Spectral class |
F3V (yellow-white) |
|
| Pri motion ra |
-034 |
|
Sec motion ra |
-034 |
|
| Pri motion dec |
-063 |
|
Sec motion dec |
-063 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 207136 |
|
Constellation |
Aquarius |
|
SAO |
127055 |
|
HIP |
107544 |
|
| Tycho2 |
0544-01021-1 |
|
HD |
207136 |
|
GC |
30493 |
|
ADS |
15313 |
|
| BD |
BD+00 4779 |
|
Distance |
121.65 |
|
Distance ly |
396.82 |
|
ORBITAL ELEMENTS
| Period (P) | 668y | |
Periastron (T) | 2136y | |
Semi-major axis (a) | 0.99a | |
| Eccentricity (e) | 0.05 | |
Inclination (i) | 69.8° | |
Longitude of periastron (ω) | 142.4° | |
| Node (Ω) | 110.2° | |
Notes | | |
Reference | Zir2014a | |
| Equinox | 2000 | |
Last observation | 2005 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
144.9 |
0.531 |
| 2001 |
145.6 |
0.524 |
| 2002 |
146.3 |
0.518 |
| 2003 |
147.0 |
0.512 |
| 2004 |
147.7 |
0.505 |
| 2005 |
148.4 |
0.499 |
| 2006 |
149.1 |
0.493 |
| 2007 |
149.9 |
0.487 |
| 2008 |
150.7 |
0.481 |
| 2009 |
151.5 |
0.475 |
| 2010 |
152.3 |
0.469 |
| 2011 |
153.1 |
0.463 |
| 2012 |
154.0 |
0.457 |
| 2013 |
154.9 |
0.451 |
| 2014 |
155.8 |
0.445 |
| 2015 |
156.7 |
0.439 |
| 2016 |
157.7 |
0.434 |
| 2017 |
158.6 |
0.428 |
| 2018 |
159.6 |
0.423 |
| 2019 |
160.7 |
0.417 |
| 2020 |
161.7 |
0.412 |
| 2021 |
162.8 |
0.407 |
| 2022 |
163.9 |
0.402 |
| 2023 |
165.1 |
0.397 |
| 2024 |
166.2 |
0.392 |
| 2025 |
167.4 |
0.388 |
| 2026 |
168.7 |
0.383 |
| 2027 |
169.9 |
0.379 |
| 2028 |
171.2 |
0.374 |
| 2029 |
172.5 |
0.370 |
| 2030 |
173.9 |
0.366 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
