20490+3947 HO 596 AD
20h 49m 00.64s +39° 47' 29.9" P.A. 247.00 sep 18.2 mag 7.65,13.56 Sp B9IV dist. 497.51 pc (1622.88 l.y.)
| Coord 2000 |
20490+3947 |
|
Discov num |
HO 596 |
|
Comp |
AD |
|
Coord arcsec 2000 |
20 49 00.64 +39 47 29.9 |
|
| Date first |
1895 |
|
Date last |
2002 |
|
Obs |
8 |
|
| Pa first |
249 |
|
Pa last |
247.4 |
|
P.A. Now (θ) |
247.4° |
|
| Sep first |
18.5 |
|
Sep last |
18.205 |
|
Sep. Now (ρ) |
18.205" |
|
| Mag pri |
7.65 |
|
Mag sec |
13.56 |
|
delta mag (ΔM) |
5.91 |
|
Spectral class |
B9IV (blue-white) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
-010 |
|
| Pri motion dec |
-003 |
|
Sec motion dec |
+008 |
|
| Notes |
|
|
rPM=1.452
This double is not physical.
20490+3947 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 198436 |
70541 |
20 49 01 +39 47 30 |
STF 2731 AB |
2016 |
26 |
86 |
4.1 |
7.65 |
9.59 |
1.94 |
|
|
| Show |
|
70541 |
20 49 01 +39 47 30 |
HO 596 AC |
2002 |
7 |
178 |
18.0 |
7.65 |
13.64 |
5.99 |
|
|
| Show |
|
70541 |
20 49 01 +39 47 30 |
HO 596 AD |
2002 |
8 |
247 |
18.2 |
7.65 |
13.56 |
5.91 |
|
<=== |
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cygnus |
|
SAO |
70541 |
|
HIP |
102731 |
|
Tycho2 |
3170-00189-1 |
|
| Gaia DR2 |
2065019558668586624 |
|
HD |
198436 |
|
BD |
BD+39 4331 |
|
Distance |
497.51 |
|
| Distance ly |
1622.88 |
|
