23114-4259 B 594 (HD 218812)
23h 11m 21.12s -42° 58' 39.8" P.A. 170.00 sep 0.2 mag 9.10,9.50 Sp M4/5III
| Coord 2000 |
23114-4259 |
|
Discov num |
B 594 |
|
Comp |
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Coord arcsec 2000 |
23 11 21.12 -42 58 39.8 |
|
| Date first |
1925 |
|
Date last |
1963 |
|
Obs |
11 |
|
| Pa first |
304 |
|
Pa last |
169.7 |
|
P.A. Now (θ) |
169.7° |
|
| Sep first |
0.3 |
|
Sep last |
0.15 |
|
Sep. Now (ρ) |
0.15" |
|
| Mag pri |
9.10 |
|
Mag sec |
9.50 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
M4/5III (red) |
|
| Pri motion ra |
+020 |
|
Sec motion ra |
|
|
| Pri motion dec |
-010 |
|
Sec motion dec |
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|
| Notes |
N
X
O
(See Notes, Dubious double, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 218812 |
|
Constellation |
Grus |
|
SAO |
231478 |
|
Tycho2 |
8012-00786-1 |
|
| Gaia DR2 |
6542065086864240256 |
|
HD |
218812 |
|
GC |
32298 |
|
ORBITAL ELEMENTS
| Period (P) | 21y | |
Periastron (T) | 1924.869y | |
Semi-major axis (a) | 0.15a | |
| Eccentricity (e) | 0.352 | |
Inclination (i) | 42.66° | |
Longitude of periastron (ω) | 130.34° | |
| Node (Ω) | 129.52° | |
Notes | n | |
Reference | Nrr1983 | |
| Equinox | 2000 | |
Last observation | 1963 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
102.1 |
0.184 |
| 2001 |
109.9 |
0.185 |
| 2002 |
117.7 |
0.183 |
| 2003 |
126.0 |
0.175 |
| 2004 |
135.4 |
0.161 |
| 2005 |
146.9 |
0.141 |
| 2006 |
163.0 |
0.116 |
| 2007 |
188.8 |
0.089 |
| 2008 |
230.4 |
0.075 |
| 2009 |
273.5 |
0.086 |
| 2010 |
303.3 |
0.103 |
| 2011 |
325.5 |
0.114 |
| 2012 |
345.0 |
0.119 |
| 2013 |
3.5 |
0.121 |
| 2014 |
21.2 |
0.125 |
| 2015 |
37.5 |
0.131 |
| 2016 |
52.0 |
0.140 |
| 2017 |
64.6 |
0.150 |
| 2018 |
75.6 |
0.161 |
| 2019 |
85.3 |
0.170 |
| 2020 |
94.0 |
0.178 |
| 2021 |
102.1 |
0.184 |
| 2022 |
109.9 |
0.185 |
| 2023 |
117.7 |
0.183 |
| 2024 |
126.0 |
0.175 |
| 2025 |
135.4 |
0.161 |
| 2026 |
146.9 |
0.141 |
| 2027 |
163.0 |
0.116 |
| 2028 |
188.8 |
0.089 |
| 2029 |
230.4 |
0.075 |
| 2030 |
273.5 |
0.086 |
| 2031 |
303.3 |
0.103 |
| 2032 |
325.5 |
0.114 |
| 2033 |
345.0 |
0.119 |
| 2034 |
3.5 |
0.121 |
| 2035 |
21.2 |
0.125 |
| 2036 |
37.5 |
0.131 |
| 2037 |
52.0 |
0.140 |
| 2038 |
64.6 |
0.150 |
| 2039 |
75.6 |
0.161 |
| 2040 |
85.3 |
0.170 |
| 2041 |
94.0 |
0.178 |
| 2042 |
102.1 |
0.184 |
| 2043 |
109.9 |
0.185 |
| 2044 |
117.7 |
0.183 |
| 2045 |
126.0 |
0.175 |
| 2046 |
135.4 |
0.161 |
| 2047 |
146.9 |
0.141 |
| 2048 |
163.0 |
0.116 |
| 2049 |
188.8 |
0.089 |
| 2050 |
230.4 |
0.075 |
|
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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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