18101+1629 STF 2289 (NSV10311)
18h 10m 08.69s +16° 28' 35.0" P.A. 217.00 sep 1.2 mag 6.65,7.21 Sp A0V+G0III dist. 263.85 pc (860.68 l.y.)
| Coord 2000 |
18101+1629 |
|
Discov num |
STF2289 |
|
Comp |
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Coord arcsec 2000 |
18 10 08.69 +16 28 35.0 |
|
| Date first |
1829 |
|
Date last |
2019 |
|
Obs |
319 |
|
| Pa first |
243 |
|
Pa last |
217.2 |
|
P.A. Now (θ) |
217.2° |
|
| Sep first |
1.2 |
|
Sep last |
1.22 |
|
Sep. Now (ρ) |
1.22" |
|
| Mag pri |
6.65 |
|
Mag sec |
7.21 |
|
delta mag (ΔM) |
0.56 |
|
Spectral class |
A0V+G0III (white/yellow) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
+000 |
|
| Pri motion dec |
-014 |
|
Sec motion dec |
-014 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV10311 |
|
Constellation |
Hercules |
|
SAO |
103443 |
|
HIP |
89023 |
|
| Tycho2 |
1567-02517-1 |
|
Gaia DR2 |
4499054727339303552 |
|
HD |
166479 |
|
HR |
6803 |
|
| GC |
24777 |
|
ADS |
11123 |
|
BD |
BD+16 3390 |
|
Distance |
263.85 |
|
| Distance ly |
860.68 |
|
ORBITAL ELEMENTS
| Period (P) | 1958.8509y | ± 826.4005 |
Periastron (T) | 2198.3174y | ± 446.5394 |
Semi-major axis (a) | 2.4491a | ± 1.43869 |
| Eccentricity (e) | 0.81761 | ± 0.14203 |
Inclination (i) | 101.811° | ± 6.929 |
Longitude of periastron (ω) | 262.211° | ± 12.877 |
| Node (Ω) | 21.771° | ± 38.671 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
220.1 |
1.218 |
| 2001 |
220.1 |
1.218 |
| 2002 |
220.0 |
1.218 |
| 2003 |
219.9 |
1.218 |
| 2004 |
219.8 |
1.218 |
| 2005 |
219.7 |
1.218 |
| 2006 |
219.6 |
1.218 |
| 2007 |
219.5 |
1.217 |
| 2008 |
219.4 |
1.217 |
| 2009 |
219.4 |
1.217 |
| 2010 |
219.3 |
1.217 |
| 2011 |
219.2 |
1.217 |
| 2012 |
219.1 |
1.217 |
| 2013 |
219.0 |
1.216 |
| 2014 |
218.9 |
1.216 |
| 2015 |
218.8 |
1.216 |
| 2016 |
218.7 |
1.216 |
| 2017 |
218.6 |
1.215 |
| 2018 |
218.6 |
1.215 |
| 2019 |
218.5 |
1.215 |
| 2020 |
218.4 |
1.214 |
| 2021 |
218.3 |
1.214 |
| 2022 |
218.2 |
1.214 |
| 2023 |
218.1 |
1.213 |
| 2024 |
218.0 |
1.213 |
| 2025 |
217.9 |
1.212 |
| 2026 |
217.9 |
1.212 |
| 2027 |
217.8 |
1.211 |
| 2028 |
217.7 |
1.211 |
| 2029 |
217.6 |
1.210 |
| 2030 |
217.5 |
1.210 |
|
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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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