21490+4254 TDT 3172
21h 48m 57.78s +42° 54' 14.9" P.A. 164.00 sep 0.4 mag 10.51,10.54
Coord 2000 |
21490+4254 |
|
Discov num |
TDT3172 |
|
Comp |
|
|
Coord arcsec 2000 |
21 48 57.78 +42 54 14.9 |
|
Date first |
1991 |
|
Date last |
1991 |
|
Obs |
1 |
|
Pa first |
164 |
|
Pa last |
163.8 |
|
P.A. Now (θ) |
163.8° |
|
Sep first |
0.4 |
|
Sep last |
0.39 |
|
Sep. Now (ρ) |
0.39" |
|
Mag pri |
10.51 |
|
Mag sec |
10.54 |
|
delta mag (ΔM) |
0.03 |
|
Spectral class |
|
|
Pri motion ra |
-036 |
|
Sec motion ra |
-036 |
|
Pri motion dec |
-098 |
|
Sec motion dec |
-098 |
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
Tycho2 |
3192-00124-1 |
|
Gaia DR2 |
1972724800275689984 |
|