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 |
|
Comp |
|
|
Coord arcsec 2000 |
22 01 49.05 +16 28 02.7 |
|
Date first |
2008 |
|
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 |
|
Spectral class |
M2 (red) |
|
Pri motion ra |
+392 |
|
Sec motion ra |
|
|
Pri motion dec |
+156 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
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 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|