22474+1749 WSI 93 (HD 215775)
22h 47m 21.69s +17° 48' 46.0" P.A. 213.00 sep 0.2 mag 8.10,11.20 Sp K0 dist. 38.6 pc (125.91 l.y.)
| Coord 2000 |
22474+1749 |
|
Discov num |
WSI 93 |
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Comp |
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Coord arcsec 2000 |
22 47 21.69 +17 48 46.0 |
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| Date first |
2008 |
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Date last |
2020 |
|
Obs |
16 |
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| Pa first |
109 |
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Pa last |
213.3 |
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P.A. Now (θ) |
213.3° |
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| Sep first |
0.3 |
|
Sep last |
0.209 |
|
Sep. Now (ρ) |
0.209" |
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| Mag pri |
8.10 |
|
Mag sec |
11.20 |
|
delta mag (ΔM) |
3.1 |
|
Spectral class |
K0 (yellow-orange) |
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| Pri motion ra |
-232 |
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Sec motion ra |
|
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| Pri motion dec |
-137 |
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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 215775 |
|
Constellation |
Pegasus |
|
SAO |
108177 |
|
HIP |
112506 |
|
| Tycho2 |
1701-01541-1 |
|
Gaia DR2 |
2829924436319213440 |
|
HD |
215775 |
|
GC |
31797 |
|
| BD |
BD+17 4809 |
|
Distance |
38.6 |
|
Distance ly |
125.91 |
|
ORBITAL ELEMENTS
| Period (P) | 25.45y | ± 1.27 |
Periastron (T) | 2017.37y | ± 0.03 |
Semi-major axis (a) | 0.2391a | ± 0.0083 |
| Eccentricity (e) | 0.634 | ± 0.014 |
Inclination (i) | 34.2° | ± 1.8 |
Longitude of periastron (ω) | 88.8° | ± 5.5 |
| Node (Ω) | 1.6° | ± 4.6 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
246.0 |
0.300 |
| 2001 |
251.6 |
0.310 |
| 2002 |
256.9 |
0.316 |
| 2003 |
262.0 |
0.321 |
| 2004 |
267.0 |
0.323 |
| 2005 |
271.9 |
0.323 |
| 2006 |
276.9 |
0.321 |
| 2007 |
282.0 |
0.317 |
| 2008 |
287.2 |
0.310 |
| 2009 |
292.7 |
0.302 |
| 2010 |
298.6 |
0.290 |
| 2011 |
305.1 |
0.276 |
| 2012 |
312.3 |
0.259 |
| 2013 |
320.7 |
0.237 |
| 2014 |
331.0 |
0.210 |
| 2015 |
344.8 |
0.176 |
| 2016 |
6.8 |
0.132 |
| 2017 |
56.2 |
0.081 |
| 2018 |
142.8 |
0.092 |
| 2019 |
181.5 |
0.145 |
| 2020 |
200.4 |
0.187 |
| 2021 |
212.9 |
0.220 |
| 2022 |
222.4 |
0.245 |
| 2023 |
230.4 |
0.266 |
| 2024 |
237.2 |
0.282 |
| 2025 |
243.4 |
0.296 |
| 2026 |
249.1 |
0.306 |
| 2027 |
254.5 |
0.314 |
| 2028 |
259.7 |
0.319 |
| 2029 |
264.7 |
0.322 |
| 2030 |
269.7 |
0.323 |
|
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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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