21176+2841 MLB 489 AC
21h 17m 38.12s +28° 40' 46.1" P.A. 284.00 sep 11.0 mag 10.32,12.00
| Coord 2000 |
21176+2841 |
|
Discov num |
MLB 489 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 17 38.12 +28 40 46.1 |
|
| Date first |
1926 |
|
Date last |
2015 |
|
Obs |
10 |
|
| Pa first |
282 |
|
Pa last |
283.6 |
|
P.A. Now (θ) |
283.6° |
|
| Sep first |
9.4 |
|
Sep last |
10.989 |
|
Sep. Now (ρ) |
10.989" |
|
| Mag pri |
10.32 |
|
Mag sec |
12.00 |
|
delta mag (ΔM) |
1.68 |
|
Spectral class |
|
|
| Pri motion ra |
-003 |
|
Sec motion ra |
-024 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-006 |
|
| Notes |
N
(See Notes) |
|
rPM=0.85
This double is not physical.
21176+2841 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 17 38 +28 40 46 |
MLB 489 AB |
2015 |
8 |
205 |
5.0 |
10.32 |
12.30 |
1.98 |
|
|
| Show |
|
|
21 17 38 +28 40 46 |
MLB 489 AC |
2015 |
10 |
284 |
11.0 |
10.32 |
12.00 |
1.68 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
2198-00530-1 |
|
Gaia DR2 |
1848540940516780544 |
|
DM |
BD+28 4045 |
|
