18528+3125 A 257 AB
18h 52m 49.18s +31° 24' 33.7" P.A. 94.00 sep 0.9 mag 8.46,13.50 Sp F
| Coord 2000 |
18528+3125 |
|
Discov num |
A 257 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 52 49.18 +31 24 33.7 |
|
| Date first |
1901 |
|
Date last |
2017 |
|
Obs |
9 |
|
| Pa first |
111 |
|
Pa last |
93.7 |
|
P.A. Now (θ) |
93.7° |
|
| Sep first |
0.9 |
|
Sep last |
0.86 |
|
Sep. Now (ρ) |
0.86" |
|
| Mag pri |
8.46 |
|
Mag sec |
13.50 |
|
delta mag (ΔM) |
5.04 |
|
Spectral class |
F (yellow-white) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
|
|
| Pri motion dec |
+002 |
|
Sec motion dec |
|
|
| Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
18528+3125 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
67506 |
18 52 49 +31 24 34 |
A 257 AB |
2017 |
9 |
94 |
0.9 |
8.46 |
13.50 |
5.04 |
|
<=== |
| Show |
HD 175151 |
67506 |
18 52 49 +31 24 34 |
A 257 A,CD |
2015 |
14 |
324 |
82.4 |
8.46 |
11.22 |
2.76 |
|
|
| Show |
|
|
18 52 45 +31 25 40 |
A 257 CD |
2012 |
6 |
262 |
0.7 |
11.80 |
12.10 |
0.30 |
|
|
| Show |
|
|
18 52 45 +31 25 40 |
A 257 CD,EF |
2015 |
9 |
225 |
28.0 |
11.10 |
13.40 |
2.30 |
|
|
| Show |
|
|
18 52 44 +31 25 21 |
A 257 EF |
2015 |
9 |
231 |
6.2 |
13.60 |
15.40 |
1.80 |
|
|
Sextuple system
8 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
SAO |
67506 |
|
Tycho2 |
2638-01972-1 |
|
Gaia DR2 |
2042186756605230720 |
|
| HD |
175151 |
|