23518-0637 A 2700 (HD 223688)
23h 51m 46.78s -06° 36' 47.0" P.A. 341.00 sep 0.1 mag 9.30,9.70 Sp G5V dist. 65.75 pc (214.48 l.y.)
| Coord 2000 |
23518-0637 |
|
Discov num |
A 2700 |
|
Comp |
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Coord arcsec 2000 |
23 51 46.78 -06 36 47.0 |
|
| Date first |
1913 |
|
Date last |
2022 |
|
Obs |
67 |
|
| Pa first |
218 |
|
Pa last |
341.3 |
|
P.A. Now (θ) |
337.9° |
|
| Sep first |
0.2 |
|
Sep last |
0.135 |
|
Sep. Now (ρ) |
0.117" |
|
| Mag pri |
9.30 |
|
Mag sec |
9.70 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
G5V (yellow) |
|
| Pri motion ra |
+091 |
|
Sec motion ra |
|
|
| Pri motion dec |
-007 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 223688 |
|
Constellation |
Aquarius |
|
SAO |
146941 |
|
HIP |
117666 |
|
| Tycho2 |
5259-00329-1 |
|
Gaia DR2 |
2442591817277097600 |
|
HD |
223688 |
|
ADS |
17052 |
|
| BD |
BD-07 6095 |
|
Distance |
65.75 |
|
Distance ly |
214.48 |
|
ORBITAL ELEMENTS
| Period (P) | 30.16y | ± 0.25 |
Periastron (T) | 1990.48y | ± 0.01 |
Semi-major axis (a) | 0.18a | ± 0.003 |
| Eccentricity (e) | 0.314 | ± 0.004 |
Inclination (i) | 145.2° | ± 1.5 |
Longitude of periastron (ω) | 11.4° | ± 3 |
| Node (Ω) | 37.7° | ± 4 |
Notes | n | |
Reference | Doc2009g | |
| Equinox | 2000 | |
Last observation | 1995 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
240.9 |
0.207 |
| 2001 |
234.2 |
0.218 |
| 2002 |
228.1 |
0.226 |
| 2003 |
222.3 |
0.232 |
| 2004 |
216.8 |
0.235 |
| 2005 |
211.3 |
0.236 |
| 2006 |
205.9 |
0.234 |
| 2007 |
200.3 |
0.230 |
| 2008 |
194.5 |
0.224 |
| 2009 |
188.2 |
0.216 |
| 2010 |
181.5 |
0.206 |
| 2011 |
173.9 |
0.194 |
| 2012 |
165.4 |
0.182 |
| 2013 |
155.5 |
0.168 |
| 2014 |
144.0 |
0.156 |
| 2015 |
130.5 |
0.144 |
| 2016 |
115.0 |
0.135 |
| 2017 |
97.6 |
0.129 |
| 2018 |
79.1 |
0.127 |
| 2019 |
60.2 |
0.126 |
| 2020 |
40.9 |
0.124 |
| 2021 |
21.0 |
0.121 |
| 2022 |
359.9 |
0.118 |
| 2023 |
337.9 |
0.117 |
| 2024 |
316.5 |
0.122 |
| 2025 |
297.6 |
0.132 |
| 2026 |
281.8 |
0.146 |
| 2027 |
269.0 |
0.162 |
| 2028 |
258.5 |
0.177 |
| 2029 |
249.7 |
0.192 |
| 2030 |
242.0 |
0.205 |
|
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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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