22100+2308 COU 136 (HD 210444)
22h 10m 02.22s +23° 07' 33.0" P.A. 19.00 sep 0.4 mag 9.20,7.56 Sp F6IV dist. 93.81 pc (306.01 l.y.)
| Coord 2000 |
22100+2308 |
|
Discov num |
COU 136 |
|
Comp |
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Coord arcsec 2000 |
22 10 02.22 +23 07 33.0 |
|
| Date first |
1966 |
|
Date last |
2015 |
|
Obs |
75 |
|
| Pa first |
73 |
|
Pa last |
18.6 |
|
P.A. Now (θ) |
18.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.439 |
|
Sep. Now (ρ) |
0.439" |
|
| Mag pri |
9.20 |
|
Mag sec |
7.56 |
|
delta mag (ΔM) |
1.64 |
|
Spectral class |
F6IV (yellow-white) |
|
| Pri motion ra |
-019 |
|
Sec motion ra |
-019 |
|
| Pri motion dec |
-008 |
|
Sec motion dec |
-008 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 210444 |
|
Constellation |
Pegasus |
|
SAO |
90281 |
|
HIP |
109414 |
|
| Tycho2 |
2204-02347-1 |
|
HD |
210444 |
|
BD |
BD+22 4563 |
|
Distance |
93.81 |
|
| Distance ly |
306.01 |
|
ORBITAL ELEMENTS
| Period (P) | 284.6y | |
Periastron (T) | 1969.6y | |
Semi-major axis (a) | 0.62a | |
| Eccentricity (e) | 0.321 | |
Inclination (i) | 110.6° | |
Longitude of periastron (ω) | 304.2° | |
| Node (Ω) | 35.8° | |
Notes | | |
Reference | Doc2016h | |
| Equinox | 2000 | |
Last observation | 2011 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
30.8 |
0.488 |
| 2001 |
30.1 |
0.488 |
| 2002 |
29.4 |
0.489 |
| 2003 |
28.7 |
0.488 |
| 2004 |
28.1 |
0.488 |
| 2005 |
27.4 |
0.487 |
| 2006 |
26.7 |
0.486 |
| 2007 |
26.0 |
0.485 |
| 2008 |
25.3 |
0.483 |
| 2009 |
24.6 |
0.481 |
| 2010 |
23.9 |
0.479 |
| 2011 |
23.2 |
0.476 |
| 2012 |
22.5 |
0.473 |
| 2013 |
21.8 |
0.470 |
| 2014 |
21.0 |
0.467 |
| 2015 |
20.3 |
0.464 |
| 2016 |
19.5 |
0.460 |
| 2017 |
18.7 |
0.456 |
| 2018 |
17.9 |
0.452 |
| 2019 |
17.1 |
0.448 |
| 2020 |
16.3 |
0.443 |
| 2021 |
15.5 |
0.438 |
| 2022 |
14.6 |
0.434 |
| 2023 |
13.8 |
0.429 |
| 2024 |
12.9 |
0.424 |
| 2025 |
12.0 |
0.419 |
| 2026 |
11.0 |
0.413 |
| 2027 |
10.1 |
0.408 |
| 2028 |
9.1 |
0.403 |
| 2029 |
8.1 |
0.397 |
| 2030 |
7.0 |
0.392 |
|
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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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