18070+3034 AC 15 AB (99 Her)
18h 07m 01.61s +30° 33' 42.7" P.A. 331.00 sep 1.4 mag 5.13,8.96 Sp F7V dist. 15.64 pc (51.02 l.y.)
| Coord 2000 |
18070+3034 |
|
Discov num |
AC 15 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 07 01.61 +30 33 42.7 |
|
| Date first |
1859 |
|
Date last |
2018 |
|
Obs |
217 |
|
| Pa first |
347 |
|
Pa last |
331 |
|
P.A. Now (θ) |
339.8° |
|
| Sep first |
1.7 |
|
Sep last |
1.424 |
|
Sep. Now (ρ) |
1.536" |
|
| Mag pri |
5.13 |
|
Mag sec |
8.96 |
|
delta mag (ΔM) |
3.83 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
-086 |
|
Sec motion ra |
-069 |
|
| Pri motion dec |
+079 |
|
Sec motion dec |
+048 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.303
This double is physical.
18070+3034 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
66648 |
18 07 02 +30 33 43 |
SCA 170 Aa,Ab |
2005 |
2 |
230 |
0.2 |
5.13 |
|
|
|
|
| Show |
99 Her |
66648 |
18 07 02 +30 33 43 |
AC 15 AB |
2018 |
217 |
331 |
1.4 |
5.13 |
8.96 |
3.83 |
Y |
<=== |
| Show |
|
66648 |
18 07 02 +30 33 43 |
AC 15 AC |
2015 |
8 |
60 |
97.0 |
5.13 |
10.70 |
5.57 |
|
|
| Show |
|
66648 |
18 07 02 +30 33 43 |
AC 15 AD |
2002 |
5 |
103 |
140.1 |
5.13 |
11.10 |
5.97 |
|
|
| Show |
|
66648 |
18 07 02 +30 33 43 |
AC 15 AE |
2015 |
6 |
78 |
169.9 |
5.13 |
10.80 |
5.67 |
|
|
| Show |
|
66648 |
18 07 02 +30 33 43 |
AC 15 AF |
2002 |
3 |
165 |
162.4 |
5.13 |
10.70 |
5.57 |
|
|
| Show |
|
66648 |
18 07 02 +30 33 43 |
AC 15 AG |
2015 |
7 |
0 |
175.9 |
5.13 |
11.36 |
6.23 |
|
|
Octuple system
7 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
99 Her |
|
Constellation |
Hercules |
|
SAO |
66648 |
|
HIP |
88745 |
|
| Tycho2 |
2621-02683-1 |
|
Gaia DR2 |
4590758227640885248 |
|
HD |
165908 |
|
HR |
6775 |
|
| GC |
24700 |
|
ADS |
11077 |
|
GL |
Gl 704A |
|
BD |
BD+30 3128 |
|
| Flamsteed |
99 Herculis |
|
Flamsteed name |
99 Her |
|
Distance |
15.64 |
|
Distance ly |
51.02 |
|
ORBITAL ELEMENTS
| Period (P) | 55.91y | ± 0.12 |
Periastron (T) | 1997.8y | ± 0 |
Semi-major axis (a) | 1.05a | ± 0.02 |
| Eccentricity (e) | 0.761 | ± 0.007 |
Inclination (i) | 36.18° | ± 1.72 |
Longitude of periastron (ω) | 295.38° | ± 2.84 |
| Node (Ω) | 223.62° | ± 3.21 |
Notes | n | |
Reference | Jao2016 | |
| Equinox | 2000 | |
Last observation | 2011 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
250.4 |
0.460 |
| 2001 |
264.9 |
0.557 |
| 2002 |
275.2 |
0.643 |
| 2003 |
283.2 |
0.722 |
| 2004 |
289.7 |
0.794 |
| 2005 |
295.1 |
0.862 |
| 2006 |
299.8 |
0.926 |
| 2007 |
303.9 |
0.985 |
| 2008 |
307.5 |
1.041 |
| 2009 |
310.8 |
1.094 |
| 2010 |
313.7 |
1.143 |
| 2011 |
316.5 |
1.190 |
| 2012 |
319.0 |
1.233 |
| 2013 |
321.4 |
1.273 |
| 2014 |
323.6 |
1.311 |
| 2015 |
325.7 |
1.346 |
| 2016 |
327.7 |
1.379 |
| 2017 |
329.6 |
1.409 |
| 2018 |
331.4 |
1.436 |
| 2019 |
333.2 |
1.461 |
| 2020 |
334.9 |
1.483 |
| 2021 |
336.6 |
1.503 |
| 2022 |
338.2 |
1.521 |
| 2023 |
339.8 |
1.536 |
| 2024 |
341.4 |
1.548 |
| 2025 |
342.9 |
1.558 |
| 2026 |
344.4 |
1.566 |
| 2027 |
345.9 |
1.571 |
| 2028 |
347.5 |
1.573 |
| 2029 |
349.0 |
1.573 |
| 2030 |
350.5 |
1.570 |
|
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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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