18083+2941 YSC 65 Aa,Ac
18h 08m 16.03s +29° 41' 28.1" P.A. 246.00 sep 0.1 mag 7.80,10.80 Sp G5
Coord 2000 |
18083+2941 |
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Discov num |
YSC 65 |
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Comp |
Aa,Ac |
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Coord arcsec 2000 |
18 08 16.03 +29 41 28.1 |
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Date first |
2007 |
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Date last |
2007 |
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Obs |
2 |
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Pa first |
242 |
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Pa last |
245.6 |
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P.A. Now (θ) |
245.6° |
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Sep first |
0.1 |
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Sep last |
0.116 |
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Sep. Now (ρ) |
0.116" |
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Mag pri |
7.80 |
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Mag sec |
10.80 |
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delta mag (ΔM) |
3 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
+138 |
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Sec motion ra |
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Pri motion dec |
-019 |
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Sec motion dec |
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Notes |
N
(See Notes) |
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Nature of this double is uncertain.
18083+2941 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
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18 08 16 +29 41 28 |
LAF 60 Aa,Ab |
2019 |
4 |
251 |
0.1 |
7.80 |
11.00 |
3.20 |
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Show |
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18 08 16 +29 41 28 |
YSC 65 Aa,Ac |
2007 |
2 |
246 |
0.1 |
7.80 |
10.80 |
3.00 |
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<=== |
Show |
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18 08 16 +29 41 28 |
LAF 60 AB |
2005 |
1 |
53 |
10.4 |
5.80 |
20.10 |
14.30 |
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Show |
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18 08 16 +29 41 28 |
LAF 60 AC |
2005 |
1 |
196 |
11.2 |
5.80 |
20.80 |
15.00 |
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Show |
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18 08 16 +29 41 28 |
LAF 60 AD |
2005 |
1 |
168 |
13.4 |
5.80 |
20.00 |
14.20 |
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Show |
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18 08 16 +29 41 28 |
LAF 60 AE |
2015 |
5 |
262 |
16.3 |
5.80 |
17.70 |
11.90 |
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Septuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Hercules |
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Gaia DR2 |
4590455518346609792 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 18083+2941 |
coord_arcsec_2000 | 180815.96+294128.3 |
Period (P) | 2092.2d (5.73y) | ± 5.8 |
Periastron (T) | 50585.1d (1997.373y) | ± 7.5 |
Semi-major axis (a) | 48.8m | ± 1.2 |
Eccentricity (e) | 0.765 | ± 0.013 |
Inclination (i) | 78.4° | ± 1.6 |
Longitude of periastron (ω) | 288.7° | ± 1.4 |
Node (Ω) | 69.2° | ± 2.3 |
Notes | | |
Reference | Fek2005 | |
Equinox | | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
213.5 |
0.028 |
2001-01-01 |
229.2 |
0.042 |
2002-01-01 |
238.7 |
0.046 |
2003-01-01 |
261.3 |
0.010 |
2004-01-01 |
105.1 |
0.018 |
2005-01-01 |
184.6 |
0.018 |
2006-01-01 |
219.1 |
0.033 |
2007-01-01 |
232.0 |
0.045 |
2008-01-01 |
241.3 |
0.044 |
2009-01-01 |
72.1 |
0.019 |
2010-01-01 |
123.9 |
0.016 |
2011-01-01 |
198.8 |
0.021 |
2012-01-01 |
223.5 |
0.037 |
2013-01-01 |
234.6 |
0.046 |
2014-01-01 |
244.4 |
0.038 |
2015-01-01 |
83.8 |
0.022 |
2016-01-01 |
147.7 |
0.015 |
2017-01-01 |
208.5 |
0.025 |
2018-01-01 |
227.1 |
0.040 |
2019-01-01 |
237.0 |
0.047 |
2020-01-01 |
249.4 |
0.026 |
2021-01-01 |
95.4 |
0.020 |
2022-01-01 |
171.5 |
0.016 |
2023-01-01 |
215.4 |
0.030 |
2024-01-01 |
230.2 |
0.043 |
2025-01-01 |
239.5 |
0.046 |
2026-01-01 |
15.1 |
0.003 |
2027-01-01 |
110.5 |
0.017 |
2028-01-01 |
189.7 |
0.019 |
2029-01-01 |
220.6 |
0.034 |
2030-01-01 |
232.9 |
0.045 |
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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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