22357-2808 HDS 3208 Aa,Ab
22h 35m 40.15s -28° 07' 59.3" P.A. 77.00 sep 0.0 mag 10.94,11.23 Sp K5V dist. 45.31 pc (147.8 l.y.)
| Coord 2000 |
22357-2808 |
|
Discov num |
HDS3208 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
22 35 40.15 -28 07 59.3 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
9 |
|
| Pa first |
139 |
|
Pa last |
76.6 |
|
P.A. Now (θ) |
69.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.046 |
|
Sep. Now (ρ) |
0.039" |
|
| Mag pri |
10.94 |
|
Mag sec |
11.23 |
|
delta mag (ΔM) |
0.29 |
|
Spectral class |
K5V (yellow-orange) |
|
| Pri motion ra |
+192 |
|
Sec motion ra |
|
|
| Pri motion dec |
-162 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
22357-2808 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
191248 |
22 35 40 -28 07 59 |
HDS 3208 Aa,Ab |
2021 |
9 |
77 |
0.0 |
10.94 |
11.23 |
0.29 |
Y |
<=== |
| Show |
HD 213987 |
191248 |
22 35 40 -28 07 59 |
SHY 352 AB |
1999 |
3 |
221 |
999.9 |
10.41 |
8.69 |
1.72 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Piscis Austrinus |
|
SAO |
191248 |
|
HIP |
111520 |
|
Tycho2 |
6969-00483-1 |
|
| Gaia DR2 |
6620882890706789248 |
|
HD |
213987 |
|
CD |
CD-2817838 |
|
CP |
CP-28 7615 |
|
| Distance |
45.31 |
|
Distance ly |
147.8 |
|
ORBITAL ELEMENTS
| Period (P) | 19.13y | ± 0.95 |
Periastron (T) | 2021.76y | ± 1.32 |
Semi-major axis (a) | 0.174a | ± 0.016 |
| Eccentricity (e) | 0.51 | ± 0.11 |
Inclination (i) | 70.9° | ± 4.8 |
Longitude of periastron (ω) | 209.3° | ± 12.5 |
| Node (Ω) | 133.6° | ± 3.3 |
Notes | n | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
250.6 |
0.056 |
| 2001 |
288.7 |
0.078 |
| 2002 |
310.0 |
0.091 |
| 2003 |
337.6 |
0.057 |
| 2004 |
81.6 |
0.046 |
| 2005 |
114.6 |
0.107 |
| 2006 |
123.8 |
0.160 |
| 2007 |
128.8 |
0.198 |
| 2008 |
132.4 |
0.224 |
| 2009 |
135.3 |
0.240 |
| 2010 |
138.0 |
0.247 |
| 2011 |
140.7 |
0.245 |
| 2012 |
143.4 |
0.236 |
| 2013 |
146.5 |
0.220 |
| 2014 |
150.2 |
0.197 |
| 2015 |
155.0 |
0.169 |
| 2016 |
161.9 |
0.137 |
| 2017 |
173.4 |
0.101 |
| 2018 |
197.1 |
0.068 |
| 2019 |
243.9 |
0.055 |
| 2020 |
285.1 |
0.074 |
| 2021 |
307.5 |
0.091 |
| 2022 |
331.9 |
0.064 |
| 2023 |
69.9 |
0.039 |
| 2024 |
112.7 |
0.100 |
| 2025 |
123.0 |
0.154 |
| 2026 |
128.3 |
0.194 |
| 2027 |
132.0 |
0.222 |
| 2028 |
135.0 |
0.239 |
| 2029 |
137.7 |
0.246 |
| 2030 |
140.3 |
0.245 |
|
|
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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