22003-2330 I 674 (HD 208955)
22h 00m 19.88s -23° 30' 03.2" P.A. 244.00 sep 0.3 mag 9.70,9.90 Sp G3V
| Coord 2000 |
22003-2330 |
|
Discov num |
I 674 |
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Comp |
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Coord arcsec 2000 |
22 00 19.88 -23 30 03.2 |
|
| Date first |
1907 |
|
Date last |
2020 |
|
Obs |
15 |
|
| Pa first |
260 |
|
Pa last |
243.5 |
|
P.A. Now (θ) |
245.8° |
|
| Sep first |
0.4 |
|
Sep last |
0.259 |
|
Sep. Now (ρ) |
0.289" |
|
| Mag pri |
9.70 |
|
Mag sec |
9.90 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
G3V (yellow) |
|
| Pri motion ra |
+039 |
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Sec motion ra |
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|
| Pri motion dec |
-057 |
|
Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 208955 |
|
Constellation |
Aquarius |
|
SAO |
190815 |
|
Tycho2 |
6954-01126-1 |
|
| Gaia DR2 |
6813564190280657664 |
|
HD |
208955 |
|
ADS |
15526 |
|
ORBITAL ELEMENTS
| Period (P) | 301y | ± 57 |
Periastron (T) | 2007.87y | ± 0.11 |
Semi-major axis (a) | 0.5a | ± 0.059 |
| Eccentricity (e) | 0.852 | ± 0.019 |
Inclination (i) | 59.7° | ± 1.1 |
Longitude of periastron (ω) | 44.5° | ± 1.8 |
| Node (Ω) | 69.4° | ± 1.2 |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
24.6 |
0.118 |
| 2001 |
30.5 |
0.114 |
| 2002 |
36.7 |
0.111 |
| 2003 |
43.3 |
0.107 |
| 2004 |
50.4 |
0.103 |
| 2005 |
58.4 |
0.096 |
| 2006 |
67.8 |
0.087 |
| 2007 |
80.0 |
0.074 |
| 2008 |
98.8 |
0.057 |
| 2009 |
132.0 |
0.044 |
| 2010 |
173.9 |
0.047 |
| 2011 |
200.7 |
0.065 |
| 2012 |
214.7 |
0.087 |
| 2013 |
222.9 |
0.110 |
| 2014 |
228.3 |
0.133 |
| 2015 |
232.2 |
0.154 |
| 2016 |
235.1 |
0.174 |
| 2017 |
237.5 |
0.193 |
| 2018 |
239.4 |
0.211 |
| 2019 |
241.1 |
0.228 |
| 2020 |
242.5 |
0.244 |
| 2021 |
243.7 |
0.260 |
| 2022 |
244.8 |
0.275 |
| 2023 |
245.8 |
0.289 |
| 2024 |
246.7 |
0.303 |
| 2025 |
247.5 |
0.317 |
| 2026 |
248.3 |
0.329 |
| 2027 |
249.0 |
0.342 |
| 2028 |
249.6 |
0.354 |
| 2029 |
250.3 |
0.365 |
| 2030 |
250.8 |
0.377 |
|
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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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