18421+3445 BLL 34 BC
18h 42m 10.08s +34° 44' 50.0" P.A. 65.00 sep 91.1 mag 7.73,11.79 Sp A0 dist. 353.36 pc (1152.66 l.y.)
Coord 2000 |
18421+3445 |
|
Discov num |
BLL 34 |
|
Comp |
BC |
|
Coord arcsec 2000 |
18 42 10.08 +34 44 50.0 |
|
Date first |
1879 |
|
Date last |
2015 |
|
Obs |
16 |
|
Pa first |
65 |
|
Pa last |
64.7 |
|
P.A. Now (θ) |
64.7° |
|
Sep first |
90.9 |
|
Sep last |
91.13 |
|
Sep. Now (ρ) |
91.13" |
|
Mag pri |
7.73 |
|
Mag sec |
11.79 |
|
delta mag (ΔM) |
4.06 |
|
Spectral class |
A0 (white) |
|
Pri motion ra |
+001 |
|
Sec motion ra |
+001 |
|
Pri motion dec |
-003 |
|
Sec motion dec |
-002 |
|
Notes |
N
(See Notes) |
|
rPM=0.316
Nature of this double is uncertain.
18421+3445 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
67265 |
18 42 08 +34 44 47 |
B 2546 Aa,Ab |
2016 |
45 |
24 |
0.1 |
6.50 |
7.50 |
1.00 |
Y |
|
Show |
HD 173087 |
67265 |
18 42 08 +34 44 47 |
STF 2372 AB |
2019 |
79 |
82 |
25.0 |
6.45 |
7.73 |
1.28 |
|
|
Show |
|
67265 |
18 42 08 +34 44 47 |
BLL 34 AC |
2013 |
9 |
69 |
114.0 |
6.45 |
11.79 |
5.34 |
|
|
Show |
|
|
18 42 10 +34 44 50 |
BLL 34 BC |
2015 |
16 |
65 |
91.1 |
7.73 |
11.79 |
4.06 |
|
<=== |
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Lyra |
|
HIP |
91712 |
|
Tycho2 |
2645-02012-1 |
|
Gaia DR2 |
2091774627937650688 |
|
BD |
BD+34 3286 |
|
Distance |
353.36 |
|
Distance ly |
1152.66 |
|