20054+4440 KOI 2181 AC
20h 05m 22.28s +44° 40' 19.9" P.A. 28.00 sep 3.8 mag 12.40,18.30
| Coord 2000 |
20054+4440 |
|
Discov num |
KOI2181 |
|
Comp |
AC |
|
Coord arcsec 2000 |
20 05 22.28 +44 40 19.9 |
|
| Date first |
2010 |
|
Date last |
2013 |
|
Obs |
2 |
|
| Pa first |
27 |
|
Pa last |
27.6 |
|
P.A. Now (θ) |
27.6° |
|
| Sep first |
3.8 |
|
Sep last |
3.827 |
|
Sep. Now (ρ) |
3.827" |
|
| Mag pri |
12.40 |
|
Mag sec |
18.30 |
|
delta mag (ΔM) |
5.9 |
|
Spectral class |
|
|
| Pri motion ra |
-003 |
|
Sec motion ra |
|
|
| Pri motion dec |
+005 |
|
Sec motion dec |
|
|
| Notes |
K
(K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
20054+4440 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
20 05 22 +44 40 20 |
KOI 2181 AB |
2013 |
1 |
71 |
3.5 |
12.40 |
18.80 |
6.40 |
|
|
| Show |
|
|
20 05 22 +44 40 20 |
KOI 2181 AC |
2013 |
2 |
28 |
3.8 |
12.40 |
18.30 |
5.90 |
|
<=== |
| Show |
|
|
20 05 22 +44 40 20 |
KOI 2181 AD |
2013 |
1 |
184 |
7.6 |
12.40 |
18.10 |
5.70 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
Gaia DR2 |
2081919842663938688 |
|
