23210+1715 WSI 11 (HD 220091)
23h 20m 57.57s +17° 15' 09.3" P.A. 287.00 sep 0.1 mag 6.60,8.90 Sp A9III dist. 75.36 pc (245.82 l.y.)
| Coord 2000 |
23210+1715 |
|
Discov num |
WSI 11 |
|
Comp |
|
|
Coord arcsec 2000 |
23 20 57.57 +17 15 09.3 |
|
| Date first |
1999 |
|
Date last |
2021 |
|
Obs |
11 |
|
| Pa first |
170 |
|
Pa last |
287.1 |
|
P.A. Now (θ) |
334.2° |
|
| Sep first |
0.1 |
|
Sep last |
0.066 |
|
Sep. Now (ρ) |
0.106" |
|
| Mag pri |
6.60 |
|
Mag sec |
8.90 |
|
delta mag (ΔM) |
2.3 |
|
Spectral class |
A9III (white) |
|
| Pri motion ra |
+078 |
|
Sec motion ra |
|
|
| Pri motion dec |
+015 |
|
Sec motion dec |
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| Notes |
O
R
(Orbital solution, Red magnitudes) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 220091 |
|
Constellation |
Pegasus |
|
SAO |
108560 |
|
HIP |
115288 |
|
| Tycho2 |
1713-00366-1 |
|
Gaia DR2 |
2818000408811106688 |
|
HD |
220091 |
|
GC |
32509 |
|
| BD |
BD+16 4912 |
|
Distance |
75.36 |
|
Distance ly |
245.82 |
|
ORBITAL ELEMENTS
| Period (P) | 7.95y | ± 0.1 |
Periastron (T) | 2020.44y | ± 0.18 |
Semi-major axis (a) | 0.0852a | ± 0.0042 |
| Eccentricity (e) | 0.372 | ± 0.043 |
Inclination (i) | 28.7° | ± 10.1 |
Longitude of periastron (ω) | 22.9° | ± 8.1 |
| Node (Ω) | 163.7° | ± 16.8 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
352.6 |
0.115 |
| 2001 |
13.1 |
0.112 |
| 2002 |
37.3 |
0.097 |
| 2003 |
73.8 |
0.075 |
| 2004 |
136.6 |
0.058 |
| 2005 |
230.2 |
0.052 |
| 2006 |
299.8 |
0.078 |
| 2007 |
331.8 |
0.104 |
| 2008 |
353.6 |
0.115 |
| 2009 |
14.1 |
0.111 |
| 2010 |
38.7 |
0.096 |
| 2011 |
76.2 |
0.074 |
| 2012 |
140.6 |
0.058 |
| 2013 |
235.0 |
0.053 |
| 2014 |
301.9 |
0.080 |
| 2015 |
333.0 |
0.105 |
| 2016 |
354.7 |
0.115 |
| 2017 |
15.2 |
0.111 |
| 2018 |
40.2 |
0.095 |
| 2019 |
78.7 |
0.073 |
| 2020 |
144.7 |
0.057 |
| 2021 |
239.8 |
0.053 |
| 2022 |
304.0 |
0.081 |
| 2023 |
334.2 |
0.106 |
| 2024 |
355.7 |
0.115 |
| 2025 |
16.3 |
0.110 |
| 2026 |
41.7 |
0.094 |
| 2027 |
81.2 |
0.072 |
| 2028 |
148.8 |
0.057 |
| 2029 |
244.4 |
0.054 |
| 2030 |
305.9 |
0.083 |
|
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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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