17012-1213 HU 163
17h 01m 13.55s -12° 13' 01.8" P.A. 338.00 sep 0.1 mag 9.60,9.90 Sp G0 dist. 217.86 pc (710.66 l.y.)
| Coord 2000 |
17012-1213 |
|
Discov num |
HU 163 |
|
Comp |
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Coord arcsec 2000 |
17 01 13.55 -12 13 01.8 |
|
| Date first |
1900 |
|
Date last |
2019 |
|
Obs |
12 |
|
| Pa first |
335 |
|
Pa last |
337.7 |
|
P.A. Now (θ) |
337.7° |
|
| Sep first |
0.3 |
|
Sep last |
0.096 |
|
Sep. Now (ρ) |
0.096" |
|
| Mag pri |
9.60 |
|
Mag sec |
9.90 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-007 |
|
Sec motion ra |
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|
| Pri motion dec |
+001 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
HIP |
83283 |
|
Tycho2 |
5651-00827-1 |
|
Gaia DR2 |
4333195429810983936 |
|
| ADS |
10305 |
|
BD |
BD-12 4641 |
|
Distance |
217.86 |
|
Distance ly |
710.66 |
|
ORBITAL ELEMENTS
| Period (P) | 160y | |
Periastron (T) | 2009y | |
Semi-major axis (a) | 0.1994a | |
| Eccentricity (e) | 0.73 | |
Inclination (i) | 93.8° | |
Longitude of periastron (ω) | 28.6° | |
| Node (Ω) | 154.7° | |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
169.6 |
0.029 |
| 2001 |
165.6 |
0.035 |
| 2002 |
162.8 |
0.042 |
| 2003 |
160.8 |
0.048 |
| 2004 |
159.2 |
0.053 |
| 2005 |
157.8 |
0.057 |
| 2006 |
156.6 |
0.059 |
| 2007 |
155.4 |
0.058 |
| 2008 |
154.2 |
0.055 |
| 2009 |
152.6 |
0.047 |
| 2010 |
150.3 |
0.036 |
| 2011 |
145.4 |
0.023 |
| 2012 |
123.8 |
0.008 |
| 2013 |
5.1 |
0.010 |
| 2014 |
347.1 |
0.024 |
| 2015 |
342.7 |
0.038 |
| 2016 |
340.7 |
0.052 |
| 2017 |
339.5 |
0.066 |
| 2018 |
338.7 |
0.078 |
| 2019 |
338.2 |
0.090 |
| 2020 |
337.7 |
0.102 |
| 2021 |
337.4 |
0.113 |
| 2022 |
337.1 |
0.123 |
| 2023 |
336.8 |
0.133 |
| 2024 |
336.6 |
0.142 |
| 2025 |
336.4 |
0.151 |
| 2026 |
336.3 |
0.160 |
| 2027 |
336.1 |
0.168 |
| 2028 |
336.0 |
0.176 |
| 2029 |
335.8 |
0.183 |
| 2030 |
335.7 |
0.190 |
|
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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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