16557+3511 GII 238 Aa,Ab
16h 55m 47.87s +35° 10' 57.5" P.A. 131.00 sep 0.1 mag 10.90,10.90 Sp F7V
| Coord 2000 |
16557+3511 |
|
Discov num |
GII 238 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
16 55 47.87 +35 10 57.5 |
|
| Date first |
2014 |
|
Date last |
2014 |
|
Obs |
1 |
|
| Pa first |
131 |
|
Pa last |
130.7 |
|
P.A. Now (θ) |
130.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.137 |
|
Sep. Now (ρ) |
0.137" |
|
| Mag pri |
10.90 |
|
Mag sec |
10.90 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
-007 |
|
Sec motion ra |
|
|
| Pri motion dec |
-018 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
16557+3511 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
16 55 48 +35 10 58 |
GII 238 Aa,Ab |
2014 |
1 |
131 |
0.1 |
10.90 |
10.90 |
0.00 |
Y |
<=== |
| Show |
|
|
16 55 48 +35 10 58 |
RUC 9 AB |
2016 |
4 |
348 |
1.5 |
10.10 |
13.00 |
2.90 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hercules |
|
Tycho2 |
2597-00679-1 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 16557+3511 RUC 9 |
| coord_arcsec_2000 | 165547.87+351057.5 |
| Period (P) | 10.9y | ± 6 |
Periastron (T) | | |
Semi-major axis (a) | | |
| Eccentricity (e) | 0.26 | ± 0.32 |
Inclination (i) | 57° | |
Longitude of periastron (ω) | ° | |
| Node (Ω) | ° | |
Notes | n | |
Reference | Pbl2006 | |
| Equinox | | |
Last observation | | |
Grade | 7 | (1=Definitive, 9=Indet.) |
Not enought orbital data to create a graph.
