21130-1133 VOU 24 AB (HD 201926)
21h 13m 02.51s -11° 33' 05.8" P.A. 173.00 sep 0.2 mag 9.70,10.20 Sp G0
| Coord 2000 |
21130-1133 |
|
Discov num |
VOU 24 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 13 02.51 -11 33 05.8 |
|
| Date first |
1931 |
|
Date last |
2021 |
|
Obs |
13 |
|
| Pa first |
39 |
|
Pa last |
172.8 |
|
P.A. Now (θ) |
172.8° |
|
| Sep first |
0.3 |
|
Sep last |
0.179 |
|
Sep. Now (ρ) |
0.179" |
|
| Mag pri |
9.70 |
|
Mag sec |
10.20 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+073 |
|
Sec motion ra |
|
|
| Pri motion dec |
+028 |
|
Sec motion dec |
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|
| Notes |
O
(Orbital solution) |
|
This double is physical.
21130-1133 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 201926 |
164222 |
21 13 03 -11 33 06 |
VOU 24 AB |
2021 |
13 |
173 |
0.2 |
9.70 |
10.20 |
0.50 |
Y |
<=== |
| Show |
|
164222 |
21 13 03 -11 33 06 |
RST 4077 AC |
2021 |
8 |
223 |
2.0 |
9.70 |
12.90 |
3.20 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 201926 |
|
Constellation |
Aquarius |
|
SAO |
164222 |
|
Tycho2 |
5780-00244-1 |
|
| Gaia DR2 |
6895050100822940416 |
|
HD |
201926 |
|
ORBITAL ELEMENTS
| Period (P) | 128.5y | ± 8.1 |
Periastron (T) | 2020.03y | ± 1.93 |
Semi-major axis (a) | 0.264a | ± 0.017 |
| Eccentricity (e) | 0.321 | ± 0.012 |
Inclination (i) | 161.9° | ± 12.4 |
Longitude of periastron (ω) | 250° | |
| Node (Ω) | 65.3° | ± 10.2 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
266.9 |
0.239 |
| 2001 |
263.8 |
0.235 |
| 2002 |
260.5 |
0.231 |
| 2003 |
257.2 |
0.227 |
| 2004 |
253.7 |
0.223 |
| 2005 |
250.1 |
0.219 |
| 2006 |
246.3 |
0.214 |
| 2007 |
242.4 |
0.210 |
| 2008 |
238.4 |
0.206 |
| 2009 |
234.2 |
0.202 |
| 2010 |
229.8 |
0.198 |
| 2011 |
225.2 |
0.194 |
| 2012 |
220.5 |
0.191 |
| 2013 |
215.5 |
0.187 |
| 2014 |
210.4 |
0.184 |
| 2015 |
205.1 |
0.181 |
| 2016 |
199.6 |
0.178 |
| 2017 |
194.0 |
0.176 |
| 2018 |
188.3 |
0.174 |
| 2019 |
182.4 |
0.172 |
| 2020 |
176.4 |
0.171 |
| 2021 |
170.4 |
0.171 |
| 2022 |
164.4 |
0.171 |
| 2023 |
158.5 |
0.172 |
| 2024 |
152.6 |
0.174 |
| 2025 |
146.8 |
0.176 |
| 2026 |
141.2 |
0.178 |
| 2027 |
135.8 |
0.181 |
| 2028 |
130.5 |
0.184 |
| 2029 |
125.4 |
0.188 |
| 2030 |
120.5 |
0.192 |
|
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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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