20173+5201 ES 660 BC
20h 17m 12.92s +52° 00' 54.3" P.A. 289.00 sep 9.3 mag 10.26,10.33 Sp A0V:
| Coord 2000 |
20173+5201 |
|
Discov num |
ES 660 |
|
Comp |
BC |
|
Coord arcsec 2000 |
20 17 12.92 +52 00 54.3 |
|
| Date first |
1897 |
|
Date last |
2021 |
|
Obs |
18 |
|
| Pa first |
291 |
|
Pa last |
288.7 |
|
P.A. Now (θ) |
288.7° |
|
| Sep first |
9.3 |
|
Sep last |
9.33 |
|
Sep. Now (ρ) |
9.33" |
|
| Mag pri |
10.26 |
|
Mag sec |
10.33 |
|
delta mag (ΔM) |
0.07 |
|
Spectral class |
A0V: (white) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
-001 |
|
| Pri motion dec |
+000 |
|
Sec motion dec |
-001 |
|
| Notes |
|
|
rPM=0.707
Nature of this double is uncertain.
20173+5201 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 235163 |
|
20 17 16 +52 00 37 |
ES 660 AB |
2021 |
18 |
303 |
29.9 |
10.19 |
10.26 |
0.07 |
|
|
| Show |
|
|
20 17 13 +52 00 54 |
ES 660 BC |
2021 |
18 |
289 |
9.3 |
10.26 |
10.33 |
0.07 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Tycho2 |
3584-02693-1 |
|
Gaia DR2 |
2184327698534542080 |
|
