21508+6400 MRI 57 BC
21h 50m 46.43s +64° 00' 35.6" P.A. 273.00 sep 8.8 mag 12.20,12.80
| Coord 2000 |
21508+6400 |
|
Discov num |
MRI 57 |
|
Comp |
BC |
|
Coord arcsec 2000 |
21 50 46.43 +64 00 35.6 |
|
| Date first |
1903 |
|
Date last |
2015 |
|
Obs |
8 |
|
| Pa first |
271 |
|
Pa last |
273.2 |
|
P.A. Now (θ) |
273.2° |
|
| Sep first |
8.4 |
|
Sep last |
8.798 |
|
Sep. Now (ρ) |
8.798" |
|
| Mag pri |
12.20 |
|
Mag sec |
12.80 |
|
delta mag (ΔM) |
0.6 |
|
Spectral class |
|
|
| Pri motion ra |
-005 |
|
Sec motion ra |
|
|
| Pri motion dec |
-006 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
21508+6400 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 50 47 +64 00 30 |
STI 1061 AB |
2015 |
8 |
312 |
8.0 |
12.00 |
12.10 |
0.10 |
|
|
| Show |
|
|
21 50 47 +64 00 30 |
MRI 57 AC |
2015 |
8 |
292 |
15.9 |
12.10 |
12.80 |
0.70 |
|
|
| Show |
|
|
21 50 46 +64 00 36 |
MRI 57 BC |
2015 |
8 |
273 |
8.8 |
12.20 |
12.80 |
0.60 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
Gaia DR2 |
2216787725627079552 |
|
