15457-6529 RST 792 (HD 140081)
15h 45m 42.08s -65° 29' 07.6" P.A. 74.00 sep 0.1 mag 8.96,9.72 Sp F7V dist. 100.4 pc (327.5 l.y.)
Coord 2000 |
15457-6529 |
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Discov num |
RST 792 |
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Comp |
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Coord arcsec 2000 |
15 45 42.08 -65 29 07.6 |
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Date first |
1930 |
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Date last |
2021 |
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Obs |
6 |
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Pa first |
111 |
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Pa last |
74 |
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P.A. Now (θ) |
74° |
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Sep first |
0.3 |
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Sep last |
0.092 |
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Sep. Now (ρ) |
0.092" |
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Mag pri |
8.96 |
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Mag sec |
9.72 |
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delta mag (ΔM) |
0.76 |
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Spectral class |
F7V (yellow-white) |
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Pri motion ra |
-047 |
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Sec motion ra |
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Pri motion dec |
-051 |
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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 140081 |
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Constellation |
Triangulum Australe |
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HIP |
77189 |
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Tycho2 |
9031-03195-1 |
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Gaia DR2 |
5825473089464938368 |
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HD |
140081 |
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CP |
CP-65 3133 |
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Distance |
100.4 |
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Distance ly |
327.5 |
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ORBITAL ELEMENTS
Period (P) | 174y | ± 75 |
Periastron (T) | 2018.45y | ± 0.1 |
Semi-major axis (a) | 0.396a | ± 0.086 |
Eccentricity (e) | 0.967 | ± 0.01 |
Inclination (i) | 76° | ± 0 |
Longitude of periastron (ω) | 257.6° | ± 3.5 |
Node (Ω) | 61.5° | ± 3.4 |
Notes | | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
157.7 |
0.102 |
2001 |
159.7 |
0.099 |
2002 |
161.7 |
0.096 |
2003 |
164.0 |
0.094 |
2004 |
166.3 |
0.091 |
2005 |
168.8 |
0.088 |
2006 |
171.5 |
0.085 |
2007 |
174.4 |
0.082 |
2008 |
177.4 |
0.080 |
2009 |
180.7 |
0.077 |
2010 |
184.2 |
0.074 |
2011 |
188.0 |
0.071 |
2012 |
192.1 |
0.068 |
2013 |
196.6 |
0.065 |
2014 |
201.5 |
0.062 |
2015 |
207.0 |
0.058 |
2016 |
213.5 |
0.053 |
2017 |
221.5 |
0.046 |
2018 |
234.8 |
0.030 |
2019 |
63.3 |
0.038 |
2020 |
70.4 |
0.070 |
2021 |
73.5 |
0.090 |
2022 |
75.6 |
0.105 |
2023 |
77.3 |
0.118 |
2024 |
78.6 |
0.128 |
2025 |
79.7 |
0.138 |
2026 |
80.7 |
0.147 |
2027 |
81.6 |
0.154 |
2028 |
82.4 |
0.162 |
2029 |
83.1 |
0.168 |
2030 |
83.8 |
0.174 |
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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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