18421+3445 STF 2372 AB (HD 173087)
18h 42m 08.09s +34° 44' 46.7" P.A. 82.00 sep 25.0 mag 6.45,7.73 Sp B5V dist. 456.62 pc (1489.49 l.y.)
Coord 2000 |
18421+3445 |
|
Discov num |
STF2372 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 42 08.09 +34 44 46.7 |
|
Date first |
1782 |
|
Date last |
2019 |
|
Obs |
79 |
|
Pa first |
85 |
|
Pa last |
82.3 |
|
P.A. Now (θ) |
82.3° |
|
Sep first |
22.9 |
|
Sep last |
25.009 |
|
Sep. Now (ρ) |
25.009" |
|
Mag pri |
6.45 |
|
Mag sec |
7.73 |
|
delta mag (ΔM) |
1.28 |
|
Spectral class |
B5V (blue-white) |
|
Pri motion ra |
+000 |
|
Sec motion ra |
+001 |
|
Pri motion dec |
-004 |
|
Sec motion dec |
-003 |
|
Notes |
N
Y
(See Notes, Parallax indicates components are non-physical) |
|
rPM=0.354
This double is not physical.
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
Name |
HD 173087 |
|
Constellation |
Lyra |
|
SAO |
67265 |
|
HIP |
91707 |
|
Tycho2 |
2645-02013-1 |
|
Gaia DR2 |
2091774627937648256 |
|
HD |
173087 |
|
HR |
7033 |
|
GC |
25597 |
|
ADS |
11593 |
|
BD |
BD+34 3285 |
|
Distance |
456.62 |
|
Distance ly |
1489.49 |
|