16163-1836 HDS 2299 (HD 146312)
16h 16m 20.41s -18° 35' 55.0" P.A. 312.00 sep 0.1 mag 8.57,10.68 Sp G1/G2V dist. 148.59 pc (484.7 l.y.)
Coord 2000 |
16163-1836 |
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Discov num |
HDS2299 |
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Comp |
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Coord arcsec 2000 |
16 16 20.41 -18 35 55.0 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
7 |
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Pa first |
125 |
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Pa last |
312.4 |
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P.A. Now (θ) |
312.4° |
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Sep first |
0.2 |
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Sep last |
0.119 |
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Sep. Now (ρ) |
0.119" |
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Mag pri |
8.57 |
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Mag sec |
10.68 |
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delta mag (ΔM) |
2.11 |
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Spectral class |
G1/G2V (yellow) |
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Pri motion ra |
+022 |
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Sec motion ra |
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Pri motion dec |
-048 |
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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 146312 |
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Constellation |
Scorpius |
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SAO |
159823 |
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HIP |
79732 |
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Tycho2 |
6206-01220-1 |
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Gaia DR2 |
6246221451687292032 |
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HD |
146312 |
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BD |
BD-18 4252 |
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Distance |
148.59 |
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Distance ly |
484.7 |
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ORBITAL ELEMENTS
Period (P) | 70y | |
Periastron (T) | 2027.3y | |
Semi-major axis (a) | 0.184a | |
Eccentricity (e) | 0.4 | |
Inclination (i) | 96.5° | |
Longitude of periastron (ω) | 220.6° | |
Node (Ω) | 129.6° | |
Notes | | |
Reference | Tok2019d | |
Equinox | 2000 | |
Last observation | 2019 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
118.7 |
0.128 |
2001 |
117.5 |
0.118 |
2002 |
116.1 |
0.106 |
2003 |
114.3 |
0.095 |
2004 |
112.0 |
0.083 |
2005 |
109.0 |
0.072 |
2006 |
104.8 |
0.060 |
2007 |
98.5 |
0.048 |
2008 |
88.6 |
0.038 |
2009 |
71.6 |
0.029 |
2010 |
44.1 |
0.024 |
2011 |
13.2 |
0.026 |
2012 |
351.6 |
0.033 |
2013 |
339.0 |
0.043 |
2014 |
331.4 |
0.055 |
2015 |
326.3 |
0.066 |
2016 |
322.8 |
0.077 |
2017 |
320.1 |
0.088 |
2018 |
318.0 |
0.097 |
2019 |
316.2 |
0.106 |
2020 |
314.7 |
0.113 |
2021 |
313.4 |
0.118 |
2022 |
312.1 |
0.121 |
2023 |
310.9 |
0.122 |
2024 |
309.7 |
0.119 |
2025 |
308.3 |
0.112 |
2026 |
306.8 |
0.102 |
2027 |
304.8 |
0.089 |
2028 |
302.0 |
0.072 |
2029 |
297.3 |
0.053 |
2030 |
287.0 |
0.033 |
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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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