23597-4405 WSI 140
23h 59m 44.83s -44° 04' 59.9" P.A. 306.00 sep 0.3 mag 13.40,13.90 Sp M7
Coord 2000 |
23597-4405 |
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Discov num |
WSI 140 |
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Comp |
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Coord arcsec 2000 |
23 59 44.83 -44 04 59.9 |
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Date first |
2010 |
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Date last |
2021 |
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Obs |
10 |
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Pa first |
300 |
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Pa last |
305.6 |
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P.A. Now (θ) |
305.6° |
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Sep first |
0.3 |
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Sep last |
0.289 |
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Sep. Now (ρ) |
0.289" |
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Mag pri |
13.40 |
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Mag sec |
13.90 |
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delta mag (ΔM) |
0.5 |
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Spectral class |
M7 (red) |
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Pri motion ra |
-019 |
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Sec motion ra |
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Pri motion dec |
+275 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Phoenix |
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Gaia DR2 |
6532612963356913408 |
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ORBITAL ELEMENTS
Period (P) | 11.77y | ± 0.39 |
Periastron (T) | 2001.98y | ± 0.39 |
Semi-major axis (a) | 0.217a | ± 0.004 |
Eccentricity (e) | 0.394 | ± 0.007 |
Inclination (i) | 0° | |
Longitude of periastron (ω) | 0° | |
Node (Ω) | 93.4° | ± 2.6 |
Notes | | |
Reference | Tok2019c | |
Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
346.8 |
0.207 |
2001 |
27.5 |
0.158 |
2002 |
94.9 |
0.132 |
2003 |
161.4 |
0.160 |
2004 |
201.2 |
0.208 |
2005 |
226.4 |
0.251 |
2006 |
245.0 |
0.281 |
2007 |
260.8 |
0.298 |
2008 |
275.4 |
0.302 |
2009 |
290.1 |
0.294 |
2010 |
306.4 |
0.274 |
2011 |
326.4 |
0.240 |
2012 |
354.4 |
0.195 |
2013 |
40.5 |
0.148 |
2014 |
112.3 |
0.134 |
2015 |
172.6 |
0.171 |
2016 |
207.9 |
0.219 |
2017 |
231.0 |
0.259 |
2018 |
248.8 |
0.286 |
2019 |
264.2 |
0.300 |
2020 |
278.7 |
0.302 |
2021 |
293.7 |
0.291 |
2022 |
310.6 |
0.267 |
2023 |
331.9 |
0.231 |
2024 |
2.8 |
0.184 |
2025 |
55.2 |
0.140 |
2026 |
128.8 |
0.139 |
2027 |
182.4 |
0.182 |
2028 |
213.9 |
0.229 |
2029 |
235.5 |
0.266 |
2030 |
252.5 |
0.290 |
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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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