16048-4044 I 1284 (HD 143941)
16h 04m 50.75s -40° 44' 15.5" P.A. 62.00 sep 0.2 mag 8.50,8.80 Sp F7V dist. 366.3 pc (1194.87 l.y.)
| Coord 2000 |
16048-4044 |
|
Discov num |
I 1284 |
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Comp |
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Coord arcsec 2000 |
16 04 50.75 -40 44 15.5 |
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| Date first |
1928 |
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Date last |
2021 |
|
Obs |
9 |
|
| Pa first |
97 |
|
Pa last |
61.9 |
|
P.A. Now (θ) |
61.9° |
|
| Sep first |
0.3 |
|
Sep last |
0.15 |
|
Sep. Now (ρ) |
0.15" |
|
| Mag pri |
8.50 |
|
Mag sec |
8.80 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
-013 |
|
Sec motion ra |
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| Pri motion dec |
-017 |
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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 143941 |
|
Constellation |
Lupus |
|
SAO |
226488 |
|
HIP |
78765 |
|
| Tycho2 |
7855-00930-1 |
|
Gaia DR2 |
5996831633044142208 |
|
HD |
143941 |
|
CD |
CD-4010171 |
|
| CP |
CP-40 7195 |
|
Distance |
366.3 |
|
Distance ly |
1194.87 |
|
ORBITAL ELEMENTS
| Period (P) | 240y | |
Periastron (T) | 1955.76y | |
Semi-major axis (a) | 0.301a | |
| Eccentricity (e) | 0.8 | |
Inclination (i) | 79.6° | |
Longitude of periastron (ω) | 122.9° | |
| Node (Ω) | 94.3° | |
Notes | | |
Reference | Tok2021f | |
| Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
36.2 |
0.081 |
| 2001 |
38.4 |
0.084 |
| 2002 |
40.4 |
0.087 |
| 2003 |
42.3 |
0.090 |
| 2004 |
44.1 |
0.093 |
| 2005 |
45.7 |
0.096 |
| 2006 |
47.3 |
0.099 |
| 2007 |
48.7 |
0.103 |
| 2008 |
50.1 |
0.106 |
| 2009 |
51.4 |
0.109 |
| 2010 |
52.6 |
0.113 |
| 2011 |
53.7 |
0.116 |
| 2012 |
54.7 |
0.120 |
| 2013 |
55.7 |
0.123 |
| 2014 |
56.7 |
0.126 |
| 2015 |
57.6 |
0.130 |
| 2016 |
58.4 |
0.133 |
| 2017 |
59.2 |
0.137 |
| 2018 |
60.0 |
0.140 |
| 2019 |
60.7 |
0.144 |
| 2020 |
61.4 |
0.147 |
| 2021 |
62.1 |
0.150 |
| 2022 |
62.7 |
0.154 |
| 2023 |
63.3 |
0.157 |
| 2024 |
63.9 |
0.161 |
| 2025 |
64.5 |
0.164 |
| 2026 |
65.0 |
0.167 |
| 2027 |
65.5 |
0.171 |
| 2028 |
66.0 |
0.174 |
| 2029 |
66.5 |
0.177 |
| 2030 |
67.0 |
0.181 |
|
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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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