18475+1537 GII 20 AB
18h 47m 28.61s +15° 36' 59.7" P.A. 184.00 sep 0.3 mag 9.33,12.80 Sp F5
Coord 2000 |
18475+1537 |
|
Discov num |
GII 20 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 47 28.61 +15 36 59.7 |
|
Date first |
2009 |
|
Date last |
2013 |
|
Obs |
2 |
|
Pa first |
103 |
|
Pa last |
183.9 |
|
P.A. Now (θ) |
183.9° |
|
Sep first |
8.1 |
|
Sep last |
0.272 |
|
Sep. Now (ρ) |
0.272" |
|
Mag pri |
9.33 |
|
Mag sec |
12.80 |
|
delta mag (ΔM) |
3.47 |
|
Spectral class |
F5 (yellow-white) |
|
Pri motion ra |
+003 |
|
Sec motion ra |
|
|
Pri motion dec |
-017 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
18475+1537 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
104102 |
18 47 29 +15 36 60 |
HU 584 Aa,Ab |
2008 |
19 |
5 |
0.3 |
10.03 |
10.02 |
0.01 |
|
|
Show |
|
104102 |
18 47 29 +15 36 60 |
GII 20 AB |
2013 |
2 |
184 |
0.3 |
9.33 |
12.80 |
3.47 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Hercules |
|
SAO |
104102 |
|
Tycho2 |
1583-01533-1 |
|
HD |
229505 |
|