16283-1613 RST 3950 (HD 148394)
16h 28m 16.06s -16° 12' 43.6" P.A. 37.00 sep 0.2 mag 7.60,8.78 Sp F5V dist. 74.91 pc (244.36 l.y.)
Coord 2000 |
16283-1613 |
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Discov num |
RST3950 |
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Comp |
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Coord arcsec 2000 |
16 28 16.06 -16 12 43.6 |
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Date first |
1937 |
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Date last |
2021 |
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Obs |
24 |
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Pa first |
55 |
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Pa last |
36.6 |
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P.A. Now (θ) |
32.9° |
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Sep first |
0.4 |
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Sep last |
0.201 |
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Sep. Now (ρ) |
0.19" |
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Mag pri |
7.60 |
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Mag sec |
8.78 |
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delta mag (ΔM) |
1.18 |
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Spectral class |
F5V (yellow-white) |
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Pri motion ra |
-013 |
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Sec motion ra |
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Pri motion dec |
-022 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 148394 |
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Constellation |
Ophiuchus |
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SAO |
159929 |
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HIP |
80677 |
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Tycho2 |
6203-00500-1 |
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Gaia DR2 |
4325246063818545792 |
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HD |
148394 |
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GC |
22139 |
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BD |
BD-15 4324 |
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Distance |
74.91 |
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Distance ly |
244.36 |
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ORBITAL ELEMENTS
Period (P) | 26.55y | ± 0.1 |
Periastron (T) | 2000.92y | ± 0.4 |
Semi-major axis (a) | 0.176a | ± 0.014 |
Eccentricity (e) | 0.858 | ± 0.02 |
Inclination (i) | 148.3° | ± 12 |
Longitude of periastron (ω) | 259.8° | ± 15 |
Node (Ω) | 137.8° | ± 17 |
Notes | n | |
Reference | Doc2009g | |
Equinox | 2000 | |
Last observation | 2005 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
352.6 |
0.075 |
2001 |
208.6 |
0.023 |
2002 |
117.3 |
0.087 |
2003 |
101.6 |
0.131 |
2004 |
93.1 |
0.164 |
2005 |
87.2 |
0.190 |
2006 |
82.6 |
0.211 |
2007 |
78.8 |
0.229 |
2008 |
75.6 |
0.244 |
2009 |
72.6 |
0.255 |
2010 |
69.9 |
0.265 |
2011 |
67.4 |
0.272 |
2012 |
64.9 |
0.276 |
2013 |
62.5 |
0.279 |
2014 |
60.2 |
0.280 |
2015 |
57.8 |
0.279 |
2016 |
55.5 |
0.275 |
2017 |
53.0 |
0.270 |
2018 |
50.4 |
0.263 |
2019 |
47.7 |
0.253 |
2020 |
44.7 |
0.242 |
2021 |
41.3 |
0.227 |
2022 |
37.5 |
0.210 |
2023 |
32.9 |
0.190 |
2024 |
27.1 |
0.166 |
2025 |
19.1 |
0.137 |
2026 |
5.9 |
0.100 |
2027 |
330.7 |
0.050 |
2028 |
138.3 |
0.054 |
2029 |
108.6 |
0.108 |
2030 |
97.3 |
0.147 |
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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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