21584+6930 MLB 308 AB
21h 58m 28.72s +69° 29' 24.0" P.A. 158.00 sep 34.3 mag 11.88,12.40
| Coord 2000 |
21584+6930 |
|
Discov num |
MLB 308 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 58 28.72 +69 29 24.0 |
|
| Date first |
1898 |
|
Date last |
2007 |
|
Obs |
7 |
|
| Pa first |
158 |
|
Pa last |
158.2 |
|
P.A. Now (θ) |
158.2° |
|
| Sep first |
33.5 |
|
Sep last |
34.34 |
|
Sep. Now (ρ) |
34.34" |
|
| Mag pri |
11.88 |
|
Mag sec |
12.40 |
|
delta mag (ΔM) |
0.52 |
|
Spectral class |
|
|
| Pri motion ra |
-003 |
|
Sec motion ra |
-004 |
|
| Pri motion dec |
+002 |
|
Sec motion dec |
+002 |
|
| Notes |
|
|
rPM=0.224 (< 0.3, Physical double)
This double is physical.
21584+6930 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 58 29 +69 29 24 |
MLB 308 AB |
2007 |
7 |
158 |
34.3 |
11.88 |
12.40 |
0.52 |
|
<=== |
| Show |
|
|
21 58 30 +69 28 53 |
MLB 308 BC |
2015 |
7 |
94 |
4.7 |
12.40 |
12.60 |
0.20 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
Tycho2 |
4466-01454-1 |
|
Gaia DR2 |
2223476982568764032 |
|
