18300+3710 BU 420 AC
18h 30m 01.39s +37° 09' 44.1" P.A. 197.00 sep 20.1 mag 9.79,11.10 Sp F2
| Coord 2000 |
18300+3710 |
|
Discov num |
BU 420 |
|
Comp |
AC |
|
Coord arcsec 2000 |
18 30 01.39 +37 09 44.1 |
|
| Date first |
1880 |
|
Date last |
2015 |
|
Obs |
8 |
|
| Pa first |
198 |
|
Pa last |
197.3 |
|
P.A. Now (θ) |
197.3° |
|
| Sep first |
21.6 |
|
Sep last |
20.076 |
|
Sep. Now (ρ) |
20.076" |
|
| Mag pri |
9.79 |
|
Mag sec |
11.10 |
|
delta mag (ΔM) |
1.31 |
|
Spectral class |
F2 (yellow-white) |
|
| Pri motion ra |
+003 |
|
Sec motion ra |
+003 |
|
| Pri motion dec |
-012 |
|
Sec motion dec |
-004 |
|
| Notes |
|
|
rPM=0.647
Nature of this double is uncertain.
18300+3710 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
18 30 01 +37 09 44 |
BU 420 AB |
2010 |
17 |
274 |
1.8 |
9.79 |
11.28 |
1.49 |
|
|
| Show |
|
|
18 30 01 +37 09 44 |
BU 420 AC |
2015 |
8 |
197 |
20.1 |
9.79 |
11.10 |
1.31 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lyra |
|
Tycho2 |
2636-01145-1 |
|
Gaia DR2 |
2096228573443997440 |
|
DM |
BD+37 3140 |
|
