16229-1701 CHR 54 (HD 147473)
16h 22m 53.58s -17° 01' 08.9" P.A. 123.00 sep 0.1 mag 7.62,7.81 Sp F0V dist. 91.49 pc (298.44 l.y.)
| Coord 2000 |
16229-1701 |
|
Discov num |
CHR 54 |
|
Comp |
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Coord arcsec 2000 |
16 22 53.58 -17 01 08.9 |
|
| Date first |
1984 |
|
Date last |
2021 |
|
Obs |
20 |
|
| Pa first |
92 |
|
Pa last |
123.4 |
|
P.A. Now (θ) |
103.8° |
|
| Sep first |
0.1 |
|
Sep last |
0.053 |
|
Sep. Now (ρ) |
0.071" |
|
| Mag pri |
7.62 |
|
Mag sec |
7.81 |
|
delta mag (ΔM) |
0.19 |
|
Spectral class |
F0V (yellow-white) |
|
| Pri motion ra |
+025 |
|
Sec motion ra |
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|
| Pri motion dec |
-007 |
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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 147473 |
|
Constellation |
Scorpius |
|
SAO |
159888 |
|
HIP |
80240 |
|
| Tycho2 |
6206-01804-1 |
|
Gaia DR2 |
4324906142929353856 |
|
HD |
147473 |
|
GC |
22018 |
|
| BD |
BD-16 4280 |
|
Distance |
91.49 |
|
Distance ly |
298.44 |
|
ORBITAL ELEMENTS
| Period (P) | 39.89y | ± 1.21 |
Periastron (T) | 2011.76y | ± 1.14 |
Semi-major axis (a) | 0.183a | ± 0.008 |
| Eccentricity (e) | 0.634 | ± 0.049 |
Inclination (i) | 101.9° | ± 2.1 |
Longitude of periastron (ω) | 306° | ± 2.8 |
| Node (Ω) | 236.6° | ± 2.7 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
63.6 |
0.227 |
| 2001 |
62.6 |
0.225 |
| 2002 |
61.7 |
0.222 |
| 2003 |
60.7 |
0.216 |
| 2004 |
59.6 |
0.207 |
| 2005 |
58.4 |
0.195 |
| 2006 |
57.0 |
0.179 |
| 2007 |
55.3 |
0.159 |
| 2008 |
53.1 |
0.133 |
| 2009 |
49.5 |
0.100 |
| 2010 |
41.2 |
0.057 |
| 2011 |
333.4 |
0.015 |
| 2012 |
247.0 |
0.051 |
| 2013 |
236.1 |
0.081 |
| 2014 |
229.6 |
0.090 |
| 2015 |
223.5 |
0.086 |
| 2016 |
216.3 |
0.078 |
| 2017 |
207.0 |
0.067 |
| 2018 |
194.1 |
0.056 |
| 2019 |
176.0 |
0.048 |
| 2020 |
153.7 |
0.046 |
| 2021 |
132.0 |
0.050 |
| 2022 |
115.4 |
0.059 |
| 2023 |
103.8 |
0.071 |
| 2024 |
95.7 |
0.084 |
| 2025 |
89.9 |
0.098 |
| 2026 |
85.5 |
0.112 |
| 2027 |
82.1 |
0.126 |
| 2028 |
79.4 |
0.139 |
| 2029 |
77.1 |
0.152 |
| 2030 |
75.2 |
0.164 |
|
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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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