20105+2920 HDS2874Ca,Cb

 
 
20h 10m 32.24s +29 21' 49.7" P.A. 275.00 sep 0.3 mag 7.61,11.49 Sp B9 dist. 350.88 pc (1144.57 l.y.)
 
 
Coord 2000
20105+2920
Discov num
HDS2874
Comp
Ca,Cb
Coord arcsec 2000
20 10 32.24 +29 21 49.7
Date first
1991
Date last
1991
Obs
1
Pa first
275
Pa last
275
P.A. Now (θ)
275°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
7.61
Mag sec
11.49
delta mag (ΔM)
3.88
Spectral class
B9 (blue-white)
Pri motion ra
+004
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
N (See Notes)
Visually invisible, K-band or other infrared star Nature of this double is uncertain.
 
 
20105+2920 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 88297 20105+2920 BRT 46 AB 1893 2015 19 79 5.3 11.24 11.80 0.56
Show 88297 20105+2920 MLB 477 AC 1926 2018 11 24 113.7 11.24 7.59 3.65
Show 88297 20105+2920 HDS2874 Ca,Cb 1991 1991 1 275 0.3 7.61 11.49 3.88 <===
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
275
Precise sep
0.349
Var name
V398 Vul
Constellation
Vulpecula
SAO
88297
HIP
99402
Tycho2
2166-01101-1
Gaia DR2
51768415360
HD
191745
BD
BD+28 3646
Distance
350.88
Distance ly
1144.57
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20105+2920 HDS2874 Ca,Cb 1991 1 275 0.3 7.61 11.49 B9 D 201032.24+292149.7

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