22375+2356 HU 391 AB
22h 37m 27.03s +23° 56' 16.5" P.A. 3.00 sep 0.3 mag 9.71,10.46 Sp K8 dist. 50.1 pc (163.43 l.y.)
| Coord 2000 |
22375+2356 |
|
Discov num |
HU 391 |
|
Comp |
AB |
|
Coord arcsec 2000 |
22 37 27.03 +23 56 16.5 |
|
| Date first |
1901 |
|
Date last |
2013 |
|
Obs |
35 |
|
| Pa first |
167 |
|
Pa last |
2.5 |
|
P.A. Now (θ) |
2.5° |
|
| Sep first |
0.7 |
|
Sep last |
0.32 |
|
Sep. Now (ρ) |
0.32" |
|
| Mag pri |
9.71 |
|
Mag sec |
10.46 |
|
delta mag (ΔM) |
0.75 |
|
Spectral class |
K8 (yellow-orange) |
|
| Pri motion ra |
+088 |
|
Sec motion ra |
|
|
| Pri motion dec |
-017 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
22375+2356 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
22 37 27 +23 56 16 |
HU 391 AB |
2013 |
35 |
3 |
0.3 |
9.71 |
10.46 |
0.75 |
Y |
<=== |
| Show |
|
|
22 37 27 +23 56 16 |
HU 391 AC |
2015 |
17 |
194 |
5.6 |
9.71 |
12.44 |
2.73 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pegasus |
|
HIP |
111680 |
|
Tycho2 |
2220-00778-1 |
|
Gaia DR2 |
1876923768033453312 |
|
| ADS |
16116 |
|
BD |
BD+23 4575 |
|
Distance |
50.1 |
|
Distance ly |
163.43 |
|
ORBITAL ELEMENTS
| Period (P) | 141.11y | ± 5.19 |
Periastron (T) | 2013.05y | ± 0.39 |
Semi-major axis (a) | 0.675a | ± 0.013 |
| Eccentricity (e) | 0.635 | ± 0.02 |
Inclination (i) | 60.1° | ± 2.5 |
Longitude of periastron (ω) | 192.4° | ± 7 |
| Node (Ω) | 181.3° | ± 2.7 |
Notes | | |
Reference | Gur2018 | |
| Equinox | 2000 | |
Last observation | 2011 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
258.9 |
0.256 |
| 2001 |
266.1 |
0.241 |
| 2002 |
274.3 |
0.228 |
| 2003 |
283.2 |
0.220 |
| 2004 |
292.8 |
0.215 |
| 2005 |
302.5 |
0.214 |
| 2006 |
312.1 |
0.218 |
| 2007 |
321.3 |
0.224 |
| 2008 |
330.0 |
0.232 |
| 2009 |
338.0 |
0.240 |
| 2010 |
345.5 |
0.247 |
| 2011 |
352.7 |
0.251 |
| 2012 |
359.8 |
0.250 |
| 2013 |
7.2 |
0.243 |
| 2014 |
15.2 |
0.230 |
| 2015 |
24.3 |
0.214 |
| 2016 |
35.0 |
0.196 |
| 2017 |
47.7 |
0.180 |
| 2018 |
62.3 |
0.171 |
| 2019 |
77.9 |
0.170 |
| 2020 |
92.9 |
0.178 |
| 2021 |
105.9 |
0.195 |
| 2022 |
116.5 |
0.218 |
| 2023 |
124.9 |
0.245 |
| 2024 |
131.5 |
0.274 |
| 2025 |
136.9 |
0.304 |
| 2026 |
141.3 |
0.335 |
| 2027 |
144.9 |
0.366 |
| 2028 |
148.0 |
0.397 |
| 2029 |
150.6 |
0.427 |
| 2030 |
152.9 |
0.457 |
|
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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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