20397+4734 ES 90 AB,C (HD 197117)
20h 39m 42.24s +47° 34' 26.9" P.A. 141.00 sep 7.1 mag 8.48,12.00 Sp A0
| Coord 2000 |
20397+4734 |
|
Discov num |
ES 90 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
20 39 42.24 +47 34 26.9 |
|
| Date first |
1901 |
|
Date last |
2019 |
|
Obs |
10 |
|
| Pa first |
140 |
|
Pa last |
141.3 |
|
P.A. Now (θ) |
141.3° |
|
| Sep first |
8.3 |
|
Sep last |
7.09 |
|
Sep. Now (ρ) |
7.09" |
|
| Mag pri |
8.48 |
|
Mag sec |
12.00 |
|
delta mag (ΔM) |
3.52 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
|
|
| Pri motion dec |
+009 |
|
Sec motion dec |
|
|
| Notes |
|
|
Nature of this double is uncertain.
20397+4734 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
49906 |
20 39 42 +47 34 27 |
A 747 AB |
2009 |
21 |
104 |
0.3 |
8.70 |
9.00 |
0.30 |
|
|
| Show |
HD 197117 |
49906 |
20 39 42 +47 34 27 |
ES 90 AB,C |
2019 |
10 |
141 |
7.1 |
8.48 |
12.00 |
3.52 |
|
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 197117 |
|
Constellation |
Cygnus |
|
SAO |
49906 |
|
Tycho2 |
3578-03166-1 |
|
| Gaia DR2 |
2167457999017893504 |
|
HD |
197117 |
|
