18091+3101 BLL 31 AB (T Her)
18h 09m 06.21s +31° 01' 16.1" P.A. 320.00 sep 64.5 mag 10.04,11.08 Sp M4e dist. 925.93 pc (3020.38 l.y.)
Coord 2000 |
18091+3101 |
|
Discov num |
BLL 31 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 09 06.21 +31 01 16.1 |
|
Date first |
1877 |
|
Date last |
2015 |
|
Obs |
19 |
|
Pa first |
321 |
|
Pa last |
320.3 |
|
P.A. Now (θ) |
320.3° |
|
Sep first |
66.9 |
|
Sep last |
64.532 |
|
Sep. Now (ρ) |
64.532" |
|
Mag pri |
10.04 |
|
Mag sec |
11.08 |
|
delta mag (ΔM) |
1.04 |
|
Spectral class |
M4e (red) |
|
Pri motion ra |
-005 |
|
Sec motion ra |
+014 |
|
Pri motion dec |
+009 |
|
Sec motion dec |
-009 |
|
Notes |
N
(See Notes) |
|
rPM=1.573
This double is not physical.
18091+3101 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
T Her |
66680 |
18 09 06 +31 01 16 |
BLL 31 AB |
2015 |
19 |
320 |
64.5 |
10.04 |
11.08 |
1.04 |
|
<=== |
Show |
|
|
18 09 03 +31 02 06 |
BKO 51 BC |
2015 |
8 |
207 |
19.0 |
11.08 |
13.20 |
2.12 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
T Her |
|
Constellation |
Hercules |
|
SAO |
66680 |
|
HIP |
88923 |
|
Tycho2 |
2622-01634-1 |
|
Gaia DR2 |
4591149275824008960 |
|
HD |
166382 |
|
GC |
24757 |
|
DM |
BD+31 3185 |
|
BD |
BD+30 3137 |
|
Distance |
925.93 |
|
Distance ly |
3020.38 |
|