15544-6131 HDS 2240 (HD 141806)
15h 54m 24.71s -61° 31' 05.8" P.A. 244.00 sep 0.0 mag 10.38,10.64 Sp G2/G3V dist. 112.61 pc (367.33 l.y.)
Coord 2000 |
15544-6131 |
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Discov num |
HDS2240 |
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Comp |
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Coord arcsec 2000 |
15 54 24.71 -61 31 05.8 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
9 |
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Pa first |
12 |
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Pa last |
244 |
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P.A. Now (θ) |
244° |
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Sep first |
0.3 |
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Sep last |
0.033 |
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Sep. Now (ρ) |
0.033" |
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Mag pri |
10.38 |
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Mag sec |
10.64 |
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delta mag (ΔM) |
0.26 |
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Spectral class |
G2/G3V (yellow) |
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Pri motion ra |
-023 |
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Sec motion ra |
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Pri motion dec |
+036 |
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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
Name |
HD 141806 |
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Constellation |
Triangulum Australe |
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SAO |
253337 |
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HIP |
77890 |
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Tycho2 |
9023-01538-1 |
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Gaia DR2 |
5832607614273523840 |
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HD |
141806 |
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CP |
CP-61 5362 |
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Distance |
112.61 |
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Distance ly |
367.33 |
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ORBITAL ELEMENTS
Period (P) | 80y | |
Periastron (T) | 2020.49y | |
Semi-major axis (a) | 0.191a | |
Eccentricity (e) | 0.83 | |
Inclination (i) | 0° | |
Longitude of periastron (ω) | 0° | |
Node (Ω) | 182.8° | |
Notes | | |
Reference | Tok2020g | |
Equinox | 2000 | |
Last observation | 2020 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
19.3 |
0.291 |
2001 |
20.4 |
0.284 |
2002 |
21.6 |
0.277 |
2003 |
22.8 |
0.270 |
2004 |
24.1 |
0.262 |
2005 |
25.5 |
0.254 |
2006 |
26.9 |
0.245 |
2007 |
28.5 |
0.236 |
2008 |
30.2 |
0.226 |
2009 |
32.1 |
0.215 |
2010 |
34.2 |
0.204 |
2011 |
36.6 |
0.192 |
2012 |
39.2 |
0.179 |
2013 |
42.3 |
0.165 |
2014 |
46.0 |
0.150 |
2015 |
50.5 |
0.135 |
2016 |
56.3 |
0.117 |
2017 |
64.2 |
0.099 |
2018 |
76.0 |
0.078 |
2019 |
96.9 |
0.056 |
2020 |
143.3 |
0.036 |
2021 |
223.7 |
0.037 |
2022 |
269.3 |
0.057 |
2023 |
289.9 |
0.079 |
2024 |
301.6 |
0.099 |
2025 |
309.4 |
0.118 |
2026 |
315.2 |
0.135 |
2027 |
319.7 |
0.151 |
2028 |
323.3 |
0.165 |
2029 |
326.4 |
0.179 |
2030 |
329.1 |
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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