22018+1628 YSC 165
22h 01m 49.05s +16° 28' 02.7" P.A. 250.00 sep 0.4 mag 11.30,11.60 Sp M2 dist. 16.18 pc (52.78 l.y.)
| Coord 2000 |
22018+1628 |
|
Discov num |
YSC 165 |
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Comp |
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Coord arcsec 2000 |
22 01 49.05 +16 28 02.7 |
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| Date first |
2008 |
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Date last |
2021 |
|
Obs |
10 |
|
| Pa first |
232 |
|
Pa last |
250.2 |
|
P.A. Now (θ) |
271.4° |
|
| Sep first |
0.4 |
|
Sep last |
0.354 |
|
Sep. Now (ρ) |
0.341" |
|
| Mag pri |
11.30 |
|
Mag sec |
11.60 |
|
delta mag (ΔM) |
0.3 |
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Spectral class |
M2 (red) |
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| Pri motion ra |
+392 |
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Sec motion ra |
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| Pri motion dec |
+156 |
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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
| Constellation |
Pegasus |
|
HIP |
108752 |
|
Tycho2 |
1680-00561-1 |
|
GL |
Gl 844 |
|
| Distance |
16.18 |
|
Distance ly |
52.78 |
|
ORBITAL ELEMENTS
| Period (P) | 11.798y | ± 0.067 |
Periastron (T) | 57032.7d (2015.026y) | ± 9.4 |
Semi-major axis (a) | 306.7m | ± 2.6 |
| Eccentricity (e) | 0.4838 | ± 0.0075 |
Inclination (i) | 38.21° | ± 0.89 |
Longitude of periastron (ω) | 267.2° | ± 1.1 |
| Node (Ω) | 151.8° | ± 1.1 |
Notes | | |
Reference | MnA2019 | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
281.8 |
0.330 |
| 2001 |
301.6 |
0.299 |
| 2002 |
328.8 |
0.237 |
| 2003 |
30.8 |
0.135 |
| 2004 |
130.4 |
0.189 |
| 2005 |
166.4 |
0.279 |
| 2006 |
187.8 |
0.326 |
| 2007 |
205.0 |
0.348 |
| 2008 |
220.9 |
0.357 |
| 2009 |
236.3 |
0.358 |
| 2010 |
251.8 |
0.354 |
| 2011 |
268.0 |
0.344 |
| 2012 |
285.5 |
0.325 |
| 2013 |
306.2 |
0.289 |
| 2014 |
336.5 |
0.218 |
| 2015 |
54.9 |
0.125 |
| 2016 |
140.4 |
0.212 |
| 2017 |
171.3 |
0.291 |
| 2018 |
191.5 |
0.332 |
| 2019 |
208.3 |
0.350 |
| 2020 |
224.0 |
0.358 |
| 2021 |
239.4 |
0.358 |
| 2022 |
255.0 |
0.352 |
| 2023 |
271.4 |
0.341 |
| 2024 |
289.4 |
0.320 |
| 2025 |
311.2 |
0.279 |
| 2026 |
345.8 |
0.198 |
| 2027 |
80.2 |
0.129 |
| 2028 |
148.5 |
0.232 |
| 2029 |
175.9 |
0.302 |
| 2030 |
195.0 |
0.337 |
|
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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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