18359+1659 STT 358 AB
18h 35m 53.22s +16° 58' 32.5" P.A. 146.00 sep 1.7 mag 6.94,7.08 Sp F8V dist. 32.88 pc (107.25 l.y.)
| Coord 2000 |
18359+1659 |
|
Discov num |
STT 358 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 35 53.22 +16 58 32.5 |
|
| Date first |
1843 |
|
Date last |
2019 |
|
Obs |
497 |
|
| Pa first |
224 |
|
Pa last |
146.3 |
|
P.A. Now (θ) |
146.3° |
|
| Sep first |
0.8 |
|
Sep last |
1.656 |
|
Sep. Now (ρ) |
1.656" |
|
| Mag pri |
6.94 |
|
Mag sec |
7.08 |
|
delta mag (ΔM) |
0.14 |
|
Spectral class |
F8V (yellow-white) |
|
| Pri motion ra |
+049 |
|
Sec motion ra |
+050 |
|
| Pri motion dec |
-071 |
|
Sec motion dec |
-067 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.048 (< 0.3, Physical double)
This double is physical.
18359+1659 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
103886 |
18 35 53 +16 58 32 |
STT 358 AB |
2019 |
497 |
146 |
1.7 |
6.94 |
7.08 |
0.14 |
Y |
<=== |
| Show |
NSV11085 |
103886 |
18 35 53 +16 58 32 |
STT 358 AB,C |
2012 |
12 |
235 |
198.7 |
6.74 |
8.50 |
1.76 |
|
|
| Show |
|
103886 |
18 35 53 +16 58 32 |
SLE 214 AB,D |
2010 |
5 |
224 |
134.6 |
6.74 |
13.43 |
6.69 |
|
|
| Show |
|
103886 |
18 35 53 +16 58 32 |
RED 25 AB,E |
2016 |
6 |
349 |
34.6 |
6.74 |
12.60 |
5.86 |
|
|
| Show |
|
|
18 35 42 +16 56 38 |
SLE 214 CD |
2015 |
8 |
77 |
72.0 |
8.50 |
13.43 |
4.93 |
|
|
Quintuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV11085 |
|
Constellation |
Hercules |
|
SAO |
103886 |
|
HIP |
91159 |
|
| Tycho2 |
1574-01664-1 |
|
Gaia DR2 |
4511848202261111424 |
|
HD |
171746 |
|
HR |
6981 |
|
| GC |
25411 |
|
ADS |
11483 |
|
BD |
BD+16 3560 |
|
Distance |
32.88 |
|
| Distance ly |
107.25 |
|
ORBITAL ELEMENTS
| Period (P) | 512.7404y | ± 190.1781 |
Periastron (T) | 1764.7202y | ± 61.5268 |
Semi-major axis (a) | 1.73008a | ± 0.36717 |
| Eccentricity (e) | 0.43383 | ± 0.24273 |
Inclination (i) | 129.796° | ± 11.477 |
Longitude of periastron (ω) | 78.743° | ± 23.164 |
| Node (Ω) | 38.513° | ± 24.142 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
155.1 |
1.683 |
| 2001 |
154.7 |
1.680 |
| 2002 |
154.2 |
1.677 |
| 2003 |
153.8 |
1.675 |
| 2004 |
153.4 |
1.672 |
| 2005 |
153.0 |
1.670 |
| 2006 |
152.5 |
1.667 |
| 2007 |
152.1 |
1.665 |
| 2008 |
151.6 |
1.662 |
| 2009 |
151.2 |
1.660 |
| 2010 |
150.8 |
1.657 |
| 2011 |
150.3 |
1.655 |
| 2012 |
149.9 |
1.652 |
| 2013 |
149.4 |
1.650 |
| 2014 |
149.0 |
1.647 |
| 2015 |
148.5 |
1.645 |
| 2016 |
148.1 |
1.643 |
| 2017 |
147.6 |
1.640 |
| 2018 |
147.2 |
1.638 |
| 2019 |
146.7 |
1.636 |
| 2020 |
146.3 |
1.633 |
| 2021 |
145.8 |
1.631 |
| 2022 |
145.4 |
1.629 |
| 2023 |
144.9 |
1.626 |
| 2024 |
144.5 |
1.624 |
| 2025 |
144.0 |
1.622 |
| 2026 |
143.5 |
1.620 |
| 2027 |
143.1 |
1.618 |
| 2028 |
142.6 |
1.615 |
| 2029 |
142.1 |
1.613 |
| 2030 |
141.7 |
1.611 |
|
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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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