21157+2128 RAO 450
21h 15m 41.75s +21° 28' 29.1" P.A. 14.00 sep 3.0 mag 13.40,16.30 Sp M4V
| Coord 2000 |
21157+2128 |
|
Discov num |
RAO 450 |
|
Comp |
|
|
Coord arcsec 2000 |
21 15 41.75 +21 28 29.1 |
|
| Date first |
2016 |
|
Date last |
2016 |
|
Obs |
1 |
|
| Pa first |
14 |
|
Pa last |
13.8 |
|
P.A. Now (θ) |
13.8° |
|
| Sep first |
3.0 |
|
Sep last |
2.982 |
|
Sep. Now (ρ) |
2.982" |
|
| Mag pri |
13.40 |
|
Mag sec |
16.30 |
|
delta mag (ΔM) |
2.9 |
|
Spectral class |
M4V (red) |
|
| Pri motion ra |
+152 |
|
Sec motion ra |
|
|
| Pri motion dec |
+080 |
|
Sec motion dec |
|
|
| Notes |
R
(Red magnitudes) |
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
