18242+4228 COU 1788 AB (HD 169778)
18h 24m 10.94s +42° 28' 01.0" P.A. 142.00 sep 3.0 mag 6.70,11.40 Sp A2 dist. 110.13 pc (359.24 l.y.)
Coord 2000 |
18242+4228 |
|
Discov num |
COU1788 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 24 10.94 +42 28 01.0 |
|
Date first |
1979 |
|
Date last |
2016 |
|
Obs |
4 |
|
Pa first |
139 |
|
Pa last |
142 |
|
P.A. Now (θ) |
142° |
|
Sep first |
2.1 |
|
Sep last |
2.994 |
|
Sep. Now (ρ) |
2.994" |
|
Mag pri |
6.70 |
|
Mag sec |
11.40 |
|
delta mag (ΔM) |
4.7 |
|
Spectral class |
A2 (white) |
|
Pri motion ra |
+001 |
|
Sec motion ra |
|
|
Pri motion dec |
-017 |
|
Sec motion dec |
|
|
Notes |
|
|
Nature of this double is uncertain.
18242+4228 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
47465 |
18 24 11 +42 28 01 |
GII 266 Aa,Ab |
2014 |
1 |
124 |
0.1 |
7.50 |
7.50 |
0.00 |
|
|
Show |
HD 169778 |
47465 |
18 24 11 +42 28 01 |
COU 1788 AB |
2016 |
4 |
142 |
3.0 |
6.70 |
11.40 |
4.70 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 169778 |
|
Constellation |
Lyra |
|
SAO |
47465 |
|
HIP |
90187 |
|
Tycho2 |
3112-01093-1 |
|
HD |
169778 |
|
GC |
25141 |
|
BD |
BD+42 3074 |
|
Distance |
110.13 |
|
Distance ly |
359.24 |
|