21426+0233 HDS 3092
21h 42m 35.53s +02° 33' 19.5" P.A. 156.00 sep 0.3 mag 11.75,13.26 Sp K7 dist. 50.25 pc (163.92 l.y.)
| Coord 2000 |
21426+0233 |
|
Discov num |
HDS3092 |
|
Comp |
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Coord arcsec 2000 |
21 42 35.53 +02 33 19.5 |
|
| Date first |
1991 |
|
Date last |
2020 |
|
Obs |
11 |
|
| Pa first |
42 |
|
Pa last |
156.2 |
|
P.A. Now (θ) |
156.2° |
|
| Sep first |
0.4 |
|
Sep last |
0.259 |
|
Sep. Now (ρ) |
0.259" |
|
| Mag pri |
11.75 |
|
Mag sec |
13.26 |
|
delta mag (ΔM) |
1.51 |
|
Spectral class |
K7 (yellow-orange) |
|
| Pri motion ra |
+104 |
|
Sec motion ra |
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|
| Pri motion dec |
-001 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Aquarius |
|
HIP |
107181 |
|
Tycho2 |
0547-01020-3 |
|
Gaia DR2 |
2694528650329463424 |
|
| Distance |
50.25 |
|
Distance ly |
163.92 |
|
ORBITAL ELEMENTS
| Period (P) | 300y | |
Periastron (T) | 1934.92y | |
Semi-major axis (a) | 0.894a | |
| Eccentricity (e) | 0 | |
Inclination (i) | 78.8° | |
Longitude of periastron (ω) | 0° | |
| Node (Ω) | 15.1° | |
Notes | | |
Reference | Tok2021c | |
| Equinox | 2000 | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
57.8 |
0.251 |
| 2001 |
60.9 |
0.238 |
| 2002 |
64.3 |
0.226 |
| 2003 |
68.2 |
0.215 |
| 2004 |
72.4 |
0.205 |
| 2005 |
77.1 |
0.196 |
| 2006 |
82.1 |
0.188 |
| 2007 |
87.6 |
0.182 |
| 2008 |
93.4 |
0.177 |
| 2009 |
99.4 |
0.174 |
| 2010 |
105.6 |
0.174 |
| 2011 |
111.7 |
0.175 |
| 2012 |
117.7 |
0.178 |
| 2013 |
123.5 |
0.183 |
| 2014 |
128.9 |
0.189 |
| 2015 |
133.9 |
0.197 |
| 2016 |
138.5 |
0.206 |
| 2017 |
142.7 |
0.217 |
| 2018 |
146.4 |
0.228 |
| 2019 |
149.8 |
0.240 |
| 2020 |
152.9 |
0.253 |
| 2021 |
155.7 |
0.266 |
| 2022 |
158.2 |
0.280 |
| 2023 |
160.4 |
0.294 |
| 2024 |
162.5 |
0.308 |
| 2025 |
164.4 |
0.323 |
| 2026 |
166.1 |
0.338 |
| 2027 |
167.6 |
0.353 |
| 2028 |
169.1 |
0.368 |
| 2029 |
170.4 |
0.383 |
| 2030 |
171.6 |
0.398 |
| 2031 |
172.8 |
0.413 |
| 2032 |
173.8 |
0.428 |
| 2033 |
174.8 |
0.443 |
| 2034 |
175.7 |
0.458 |
| 2035 |
176.6 |
0.473 |
| 2036 |
177.4 |
0.488 |
| 2037 |
178.1 |
0.502 |
| 2038 |
178.9 |
0.517 |
| 2039 |
179.5 |
0.531 |
| 2040 |
180.2 |
0.545 |
| 2041 |
180.8 |
0.559 |
| 2042 |
181.4 |
0.573 |
| 2043 |
181.9 |
0.586 |
| 2044 |
182.5 |
0.600 |
| 2045 |
183.0 |
0.613 |
| 2046 |
183.5 |
0.626 |
| 2047 |
183.9 |
0.639 |
| 2048 |
184.4 |
0.651 |
| 2049 |
184.8 |
0.663 |
| 2050 |
185.2 |
0.675 |
|
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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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