12508+0806 HDS 1803 (HD 111660)
12h 50m 49.66s +08° 05' 57.1" P.A. 39.00 sep 0.2 mag 9.19,9.31 Sp G5 dist. 136.24 pc (444.41 l.y.)
Coord 2000 |
12508+0806 |
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Discov num |
HDS1803 |
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Comp |
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Coord arcsec 2000 |
12 50 49.66 +08 05 57.1 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
10 |
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Pa first |
198 |
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Pa last |
38.7 |
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P.A. Now (θ) |
33.8° |
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Sep first |
0.1 |
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Sep last |
0.2 |
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Sep. Now (ρ) |
0.189" |
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Mag pri |
9.19 |
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Mag sec |
9.31 |
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delta mag (ΔM) |
0.12 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
-102 |
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Sec motion ra |
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Pri motion dec |
-041 |
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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 111660 |
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Constellation |
Virgo |
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SAO |
119623 |
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HIP |
62697 |
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Tycho2 |
0882-00688-1 |
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Gaia DR2 |
3709819753298356864 |
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HD |
111660 |
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BD |
BD+08 2650 |
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Distance |
136.24 |
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Distance ly |
444.41 |
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ORBITAL ELEMENTS
Period (P) | 54y | ± 8.3 |
Periastron (T) | 1982.8y | ± 3 |
Semi-major axis (a) | 0.179a | ± 0.007 |
Eccentricity (e) | 0.26 | ± 0.16 |
Inclination (i) | 120.4° | ± 3.3 |
Longitude of periastron (ω) | 131.7° | ± 17.9 |
Node (Ω) | 39.6° | ± 5.8 |
Notes | | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
130.5 |
0.105 |
2001 |
121.1 |
0.107 |
2002 |
112.4 |
0.112 |
2003 |
104.5 |
0.118 |
2004 |
97.4 |
0.125 |
2005 |
91.0 |
0.133 |
2006 |
85.5 |
0.141 |
2007 |
80.5 |
0.149 |
2008 |
76.1 |
0.158 |
2009 |
72.1 |
0.166 |
2010 |
68.5 |
0.174 |
2011 |
65.2 |
0.181 |
2012 |
62.1 |
0.188 |
2013 |
59.3 |
0.194 |
2014 |
56.6 |
0.199 |
2015 |
54.0 |
0.203 |
2016 |
51.5 |
0.206 |
2017 |
49.0 |
0.207 |
2018 |
46.6 |
0.208 |
2019 |
44.2 |
0.207 |
2020 |
41.7 |
0.205 |
2021 |
39.2 |
0.201 |
2022 |
36.6 |
0.196 |
2023 |
33.8 |
0.189 |
2024 |
30.7 |
0.181 |
2025 |
27.3 |
0.171 |
2026 |
23.5 |
0.160 |
2027 |
19.1 |
0.147 |
2028 |
13.7 |
0.133 |
2029 |
7.0 |
0.118 |
2030 |
358.4 |
0.103 |
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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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