21171+4001 SEI 1489 AC
21h 17m 04.75s +40° 01' 24.6" P.A. 102.00 sep 16.4 mag 8.78,12.61 Sp A0
| Coord 2000 |
21171+4001 |
|
Discov num |
SEI1489 |
|
Comp |
AC |
|
Coord arcsec 2000 |
21 17 04.75 +40 01 24.6 |
|
| Date first |
1895 |
|
Date last |
2015 |
|
Obs |
10 |
|
| Pa first |
103 |
|
Pa last |
102.1 |
|
P.A. Now (θ) |
102.1° |
|
| Sep first |
16.3 |
|
Sep last |
16.444 |
|
Sep. Now (ρ) |
16.444" |
|
| Mag pri |
8.78 |
|
Mag sec |
12.61 |
|
delta mag (ΔM) |
3.83 |
|
Spectral class |
A0 (white) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
+008 |
|
| Pri motion dec |
+000 |
|
Sec motion dec |
+000 |
|
| Notes |
|
|
rPM=0.375
Nature of this double is uncertain.
21171+4001 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
71156 |
21 17 05 +40 01 25 |
A 1441 AB |
2014 |
18 |
273 |
0.2 |
9.70 |
9.80 |
0.10 |
|
|
| Show |
|
71156 |
21 17 05 +40 01 25 |
SEI 1489 AC |
2015 |
10 |
102 |
16.4 |
8.78 |
12.61 |
3.83 |
|
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
71156 |
|
Tycho2 |
3173-02060-1 |
|
Gaia DR2 |
1965252892916759296 |
|
| HD |
202797 |
|
