20240-4231 DON 984 (HD 193831)
20h 24m 02.49s -42° 31' 05.3" P.A. 258.00 sep 0.9 mag 9.65,9.62 Sp A2V
Coord 2000 |
20240-4231 |
|
Discov num |
DON 984 |
|
Comp |
|
|
Coord arcsec 2000 |
20 24 02.49 -42 31 05.3 |
|
Date first |
1930 |
|
Date last |
2008 |
|
Obs |
4 |
|
Pa first |
249 |
|
Pa last |
257.8 |
|
P.A. Now (θ) |
257.8° |
|
Sep first |
0.7 |
|
Sep last |
0.941 |
|
Sep. Now (ρ) |
0.941" |
|
Mag pri |
9.65 |
|
Mag sec |
9.62 |
|
delta mag (ΔM) |
0.03 |
|
Spectral class |
A2V (white) |
|
Pri motion ra |
+017 |
|
Sec motion ra |
+017 |
|
Pri motion dec |
-006 |
|
Sec motion dec |
-006 |
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 193831 |
|
Constellation |
Sagittarius |
|
SAO |
230186 |
|
Tycho2 |
7957-00425-1 |
|
Gaia DR2 |
6679358664283089152 |
|
HD |
193831 |
|
DM |
CP-42 9070 |
|