20339+4642 BU 1489 AB (V2015 Cyg)
20h 33m 54.84s +46° 41' 37.9" P.A. 16.00 sep 116.5 mag 5.75,9.35 Sp B9pSi dist. 132.28 pc (431.5 l.y.)
Coord 2000 |
20339+4642 |
|
Discov num |
BU 1489 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 33 54.84 +46 41 37.9 |
|
Date first |
1893 |
|
Date last |
2012 |
|
Obs |
13 |
|
Pa first |
17 |
|
Pa last |
16 |
|
P.A. Now (θ) |
16° |
|
Sep first |
118.1 |
|
Sep last |
116.53 |
|
Sep. Now (ρ) |
116.53" |
|
Mag pri |
5.75 |
|
Mag sec |
9.35 |
|
delta mag (ΔM) |
3.6 |
|
Spectral class |
B9pSi (blue-white) |
|
Pri motion ra |
+010 |
|
Sec motion ra |
-002 |
|
Pri motion dec |
+002 |
|
Sec motion dec |
-003 |
|
Notes |
N
(See Notes) |
|
rPM=1.275
This double is not physical.
20339+4642 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
49804 |
20 33 55 +46 41 38 |
HDS 2940 Aa,Ab |
2009 |
8 |
46 |
0.3 |
5.76 |
9.48 |
3.72 |
|
|
Show |
V2015 Cyg |
49804 |
20 33 55 +46 41 38 |
BU 1489 AB |
2012 |
13 |
16 |
116.5 |
5.75 |
9.35 |
3.60 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
V2015 Cyg |
|
Constellation |
Cygnus |
|
SAO |
49804 |
|
HIP |
101475 |
|
Tycho2 |
3573-01361-1 |
|
Gaia DR2 |
2071438198315555584 |
|
HD |
196178 |
|
HR |
7870 |
|
GC |
28642 |
|
BD |
BD+46 2977 |
|
Distance |
132.28 |
|
Distance ly |
431.5 |
|