17571+0004 STF 2244 (HD 163624)
17h 57m 04.32s +00° 04' 00.0" P.A. 99.00 sep 0.7 mag 6.89,6.56 Sp A3V dist. 118.48 pc (386.48 l.y.)
| Coord 2000 |
17571+0004 |
|
Discov num |
STF2244 |
|
Comp |
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Coord arcsec 2000 |
17 57 04.32 +00 04 00.0 |
|
| Date first |
1830 |
|
Date last |
2019 |
|
Obs |
200 |
|
| Pa first |
273 |
|
Pa last |
99.3 |
|
P.A. Now (θ) |
100.8° |
|
| Sep first |
1.1 |
|
Sep last |
0.67 |
|
Sep. Now (ρ) |
0.68" |
|
| Mag pri |
6.89 |
|
Mag sec |
6.56 |
|
delta mag (ΔM) |
0.33 |
|
Spectral class |
A3V (white) |
|
| Pri motion ra |
+026 |
|
Sec motion ra |
+026 |
|
| Pri motion dec |
-009 |
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Sec motion dec |
-009 |
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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 163624 |
|
Constellation |
Ophiuchus |
|
SAO |
122950 |
|
HIP |
87875 |
|
| Tycho2 |
0417-02593-1 |
|
HD |
163624 |
|
HR |
6689 |
|
GC |
24414 |
|
| ADS |
10912 |
|
BD |
BD+00 3816 |
|
Distance |
118.48 |
|
Distance ly |
386.48 |
|
ORBITAL ELEMENTS
| Period (P) | 474.9y | |
Periastron (T) | 1978.3y | |
Semi-major axis (a) | 1.032a | |
| Eccentricity (e) | 0.562 | |
Inclination (i) | 83.9° | |
Longitude of periastron (ω) | 289.6° | |
| Node (Ω) | 97.7° | |
Notes | n | |
Reference | Msn2017e | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
96.7 |
0.549 |
| 2001 |
97.0 |
0.560 |
| 2002 |
97.2 |
0.571 |
| 2003 |
97.4 |
0.580 |
| 2004 |
97.6 |
0.590 |
| 2005 |
97.8 |
0.598 |
| 2006 |
98.0 |
0.607 |
| 2007 |
98.2 |
0.614 |
| 2008 |
98.4 |
0.622 |
| 2009 |
98.6 |
0.628 |
| 2010 |
98.7 |
0.634 |
| 2011 |
98.9 |
0.640 |
| 2012 |
99.1 |
0.646 |
| 2013 |
99.2 |
0.651 |
| 2014 |
99.4 |
0.655 |
| 2015 |
99.6 |
0.659 |
| 2016 |
99.7 |
0.663 |
| 2017 |
99.9 |
0.666 |
| 2018 |
100.1 |
0.669 |
| 2019 |
100.2 |
0.672 |
| 2020 |
100.4 |
0.674 |
| 2021 |
100.5 |
0.676 |
| 2022 |
100.7 |
0.678 |
| 2023 |
100.8 |
0.680 |
| 2024 |
101.0 |
0.681 |
| 2025 |
101.1 |
0.681 |
| 2026 |
101.3 |
0.682 |
| 2027 |
101.5 |
0.682 |
| 2028 |
101.6 |
0.682 |
| 2029 |
101.8 |
0.682 |
| 2030 |
101.9 |
0.682 |
|
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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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