19450+4508 DAL  37AF

 
 
19h 44m 58.44s +45 07' 50.5" P.A. 66 sep 147.5 mag 2.89,12.80 Sp B9.5IV dist. 50.58 pc (164.99 l.y.)
 
 
Coord 2000
19450+4508
Discov num
DAL  37
Comp
AF
Coord arcsec 2000
19 44 58.44 +45 07 50.5
Date first
1998
Date last
2007
Obs
3
Pa first
66
Pa last
66
P.A. Now (θ)
66°
Sep first
147.7
Sep last
147.5
Sep. Now (ρ)
147.5"
Mag pri
2.89
Mag sec
12.80
delta mag (ΔM)
9.91
Spectral class
B9.5IV (blue-white)
Pri motion ra
+043
Sec motion ra
-001
Pri motion dec
+048
Sec motion dec
-009
Notes
N (See Notes)
rPM=1.117
This double is not physical.
 
 
19450+4508 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Del Cyg 48796 19450+4508 STF2579 AB 1826 2016 481 217 2.7 2.89 6.27 3.38 Y
Show 48796 19450+4508 STF2579 AC 1913 2014 7 66 62.6 2.89 12.00 9.11
Show 48796 19450+4508 DAL 37 AD 1998 2007 3 246 42.0 2.89 14.80 11.91
Show 48796 19450+4508 DAL 37 AF 1998 2007 3 66 147.5 2.89 12.80 9.91 <===
Show 48796 19450+4508 DAL 37 DE 1998 2007 3 250 3.3 14.80 15.20 0.40
Show 19450+4508 DAL 37 FG 2007 2007 1 311 3.2 13.00 13.80 0.80
Septuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
65.9
Precise sep
147.48
Constellation
Cygnus
SAO
48796
HIP
97165
HD
186882
HR
7528
GC
27347
BD
BD+44 3234
Bayer
Delta Cygni
Bayer name
Del Cyg
Flamsteed
18 Cygni
Flamsteed name
18 Cyg
Distance
50.58
Distance ly
164.99
last precise pa
65.9
last precise sep
147.48
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19450+4508 DAL 37 AF 2007 2 66 147.5 2.89 13.00 B9.5IV D 194458.44+450750.5

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