21178-3945 TDT 2890 Ba,Bb
21h 17m 42.60s -39° 46' 14.0" P.A. 252.00 sep 0.5 mag 10.77,10.78
| Coord 2000 |
21178-3945 |
|
Discov num |
TDT2890 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
21 17 42.60 -39 46 14.0 |
|
| Date first |
1991 |
|
Date last |
1991 |
|
Obs |
1 |
|
| Pa first |
252 |
|
Pa last |
251.8 |
|
P.A. Now (θ) |
251.8° |
|
| Sep first |
0.5 |
|
Sep last |
0.49 |
|
Sep. Now (ρ) |
0.49" |
|
| Mag pri |
10.77 |
|
Mag sec |
10.78 |
|
delta mag (ΔM) |
0.01 |
|
Spectral class |
|
|
| Pri motion ra |
-007 |
|
Sec motion ra |
-007 |
|
| Pri motion dec |
+016 |
|
Sec motion dec |
+016 |
|
| Notes |
|
|
Nature of this double is uncertain.
21178-3945 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 202561 |
212872 |
21 17 50 -39 44 59 |
CRU 9019 AB |
2015 |
7 |
230 |
117.1 |
9.80 |
10.00 |
0.20 |
|
|
| Show |
|
212872 |
21 17 50 -39 44 59 |
CRU 9019 AC |
2015 |
7 |
62 |
62.8 |
9.80 |
10.00 |
0.20 |
|
|
| Show |
|
|
21 17 43 -39 46 14 |
TDT 2890 Ba,Bb |
1991 |
1 |
252 |
0.5 |
10.77 |
10.78 |
0.01 |
|
<=== |
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Microscopium |
|
Tycho2 |
7970-00247-1 |
|
Gaia DR2 |
6583152771244292608 |
|
