20181+4044 STF 2666 AC
20h 18m 06.99s +40° 43' 55.6" P.A. 207.00 sep 34.0 mag 5.96,10.70 Sp O9IV+B8V dist. 595.24 pc (1941.67 l.y.)
| Coord 2000 |
20181+4044 |
|
Discov num |
STF2666 |
|
Comp |
AC |
|
Coord arcsec 2000 |
20 18 06.99 +40 43 55.6 |
|
| Date first |
1887 |
|
Date last |
2006 |
|
Obs |
13 |
|
| Pa first |
209 |
|
Pa last |
206.6 |
|
P.A. Now (θ) |
206.6° |
|
| Sep first |
33.7 |
|
Sep last |
33.98 |
|
Sep. Now (ρ) |
33.98" |
|
| Mag pri |
5.96 |
|
Mag sec |
10.70 |
|
delta mag (ΔM) |
4.74 |
|
Spectral class |
O9IV+B8V (blue/blue-white) |
|
| Pri motion ra |
-003 |
|
Sec motion ra |
-002 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-007 |
|
| Notes |
N
(See Notes) |
|
rPM=0.131 (< 0.3, Physical double)
This double is physical.
20181+4044 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
49438 |
20 18 07 +40 43 56 |
CHR 96 Aa,Ab |
2018 |
31 |
151 |
0.1 |
6.60 |
6.80 |
0.20 |
Y |
|
| Show |
HD 193322 |
49438 |
20 18 07 +40 43 56 |
STF 2666 AB |
2018 |
86 |
245 |
2.8 |
5.96 |
8.24 |
2.28 |
|
|
| Show |
|
49438 |
20 18 07 +40 43 56 |
STF 2666 AC |
2006 |
13 |
207 |
34.0 |
5.96 |
10.70 |
4.74 |
|
<=== |
| Show |
|
49438 |
20 18 07 +40 43 56 |
TAR 5 AD |
2006 |
8 |
181 |
49.6 |
5.96 |
11.00 |
5.04 |
|
|
| Show |
|
|
20 18 06 +40 43 25 |
STF 2666 CD |
2018 |
13 |
142 |
24.1 |
10.70 |
11.00 |
0.30 |
|
|
Quintuple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
49438 |
|
HIP |
100069 |
|
Tycho2 |
3155-02321-1 |
|
| Gaia DR2 |
2062360626011542272 |
|
HD |
193322 |
|
HR |
7767 |
|
ADS |
13672 |
|
| BD |
BD+40 4103 |
|
Distance |
595.24 |
|
Distance ly |
1941.67 |
|
