18540+3723 BU 137 AC
18h 53m 57.56s +37° 22' 49.7" P.A. 146.00 sep 23.6 mag 8.69,12.00 Sp G5III-IV
| Coord 2000 |
18540+3723 |
|
Discov num |
BU 137 |
|
Comp |
AC |
|
Coord arcsec 2000 |
18 53 57.56 +37 22 49.7 |
|
| Date first |
1880 |
|
Date last |
2015 |
|
Obs |
20 |
|
| Pa first |
142 |
|
Pa last |
145.8 |
|
P.A. Now (θ) |
145.8° |
|
| Sep first |
17.9 |
|
Sep last |
23.617 |
|
Sep. Now (ρ) |
23.617" |
|
| Mag pri |
8.69 |
|
Mag sec |
12.00 |
|
delta mag (ΔM) |
3.31 |
|
Spectral class |
G5III-IV (yellow) |
|
| Pri motion ra |
-021 |
|
Sec motion ra |
-007 |
|
| Pri motion dec |
+047 |
|
Sec motion dec |
-011 |
|
| Notes |
|
|
rPM=1.159
This double is not physical.
18540+3723 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 175491 |
67544 |
18 53 58 +37 22 50 |
BU 137 AB |
2024 |
140 |
167 |
1.6 |
8.69 |
9.02 |
0.33 |
Y |
|
| Show |
|
67544 |
18 53 58 +37 22 50 |
BU 137 AC |
2015 |
20 |
146 |
23.6 |
8.69 |
12.00 |
3.31 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
SAO |
67544 |
|
Tycho2 |
2650-01881-1 |
|
Gaia DR2 |
2094001134684220800 |
|
| HD |
175491 |
|
DM |
BD+37 3276 |
|
