17314+0243 A 2386 (HD 158837)
17h 31m 21.35s +02° 43' 28.1" P.A. 125.00 sep 0.2 mag 6.30,6.30 Sp G0IV dist. 111.61 pc (364.07 l.y.)
| Coord 2000 |
17314+0243 |
|
Discov num |
A 2386 |
|
Comp |
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|
Coord arcsec 2000 |
17 31 21.35 +02 43 28.1 |
|
| Date first |
1911 |
|
Date last |
1990 |
|
Obs |
12 |
|
| Pa first |
324 |
|
Pa last |
124.7 |
|
P.A. Now (θ) |
124.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.156 |
|
Sep. Now (ρ) |
0.156" |
|
| Mag pri |
6.30 |
|
Mag sec |
6.30 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
G0IV (yellow) |
|
| Pri motion ra |
-015 |
|
Sec motion ra |
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|
| Pri motion dec |
+023 |
|
Sec motion dec |
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|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 158837 |
|
Constellation |
Ophiuchus |
|
SAO |
122465 |
|
HIP |
85749 |
|
| Tycho2 |
0418-02364-1 |
|
Gaia DR2 |
4376816938736581504 |
|
HD |
158837 |
|
HR |
6524 |
|
| GC |
23732 |
|
ADS |
10607 |
|
BD |
BD+02 3337 |
|
Distance |
111.61 |
|
| Distance ly |
364.07 |
|
ORBITAL ELEMENTS
| Period (P) | 418.242d | |
Periastron (T) | 43723.5d (1978.587y) | |
Semi-major axis (a) | 3.26m | ± 0.81 |
| Eccentricity (e) | 0.203 | |
Inclination (i) | 76.33° | ± 31.88 |
Longitude of periastron (ω) | 301.4° | |
| Node (Ω) | 10.26° | ± 20.26 |
Notes | n | |
Reference | HIP1997d | |
| Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
188.6 |
0.004 |
| 2001-01-01 |
178.8 |
0.003 |
| 2002-01-01 |
154.6 |
0.001 |
| 2003-01-01 |
51.8 |
0.001 |
| 2004-01-01 |
19.3 |
0.003 |
| 2005-01-01 |
4.6 |
0.002 |
| 2006-01-01 |
273.1 |
0.001 |
| 2007-01-01 |
198.3 |
0.003 |
| 2008-01-01 |
187.7 |
0.004 |
| 2009-01-01 |
177.3 |
0.003 |
| 2010-01-01 |
148.5 |
0.001 |
| 2011-01-01 |
44.9 |
0.001 |
| 2012-01-01 |
17.6 |
0.003 |
| 2013-01-01 |
2.5 |
0.002 |
| 2014-01-01 |
246.9 |
0.001 |
| 2015-01-01 |
196.7 |
0.003 |
| 2016-01-01 |
186.7 |
0.004 |
| 2017-01-01 |
175.8 |
0.003 |
| 2018-01-01 |
140.6 |
0.001 |
| 2019-01-01 |
39.5 |
0.002 |
| 2020-01-01 |
16.1 |
0.003 |
| 2021-01-01 |
|
0.002 |
| 2022-01-01 |
230.2 |
0.001 |
| 2023-01-01 |
195.3 |
0.003 |
| 2024-01-01 |
185.7 |
0.004 |
| 2025-01-01 |
174.0 |
0.003 |
| 2026-01-01 |
130.6 |
0.001 |
| 2027-01-01 |
35.1 |
0.002 |
| 2028-01-01 |
14.5 |
0.003 |
| 2029-01-01 |
357.0 |
0.002 |
| 2030-01-01 |
220.0 |
0.001 |
|
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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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