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Doubles in session


Current system
20172+1553
BKO 560 BC


Nearby doubles
9' : 20171+1601
CHE 271

10' : 20179+1553
CHE 283

11' : 20168+1543
CHE 266

11' : 20171+1604
CHE 270

13' : 20165+1601
BKO 559

14' : 20181+1555
J 553

14' : 20181+1552
CHE 289

15' : 20180+1544
CHE 284

15' : 20166+1603
CHE 264

15' : 20170+1538
CHE 269

15' : 20165+1602
BKO 558

16' : 20161+1553
CHE 254AB

16' : 20180+1543
CHE 285

16' : 20177+1539
CHE 278

16' : 20183+1556
CHE 292

16' : 20161+1552
BKO 557

17' : 20166+1606
CHE 263

18' : 20171+1536
CHE 272

18' : 20181+1605
BKO 561

19' : 20182+1604
CHE 291

20' : 20163+1538
CHE 261AB

22' : 20186+1548
CHE 295

22' : 20183+1539
CHE 293

23' : 20161+1537
CHE 255

23' : 20186+1600
BPM2102

23' : 20162+1534
CHE 257



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
 
 
WDS 20172+1553 : COMPONENTS
 
 
  A B
B pa=94.3°
sep=26.77"
 
C pa=97.3°
sep=26.46"
pa=198.0°
sep=1.43"
 
 
20172+1553 A
 
 
Coord arcsec 2000 201709.78+155221.8 Mag 7.48 Spectral class B9 (blue-white) PmRA -7.00
PmDE -11.0 SAO 105926 HIP 99995 Tycho2 1631-00005-1
HD 192954 GC 28188 BD BD+15 4120
Tycho2
Tycho2 1631-00005-1 Pflag RAmdeg 304.29072996 DEmdeg 15.87266959
PmRA -5.9 PmDE -10.1 E RAmdeg 5 E DEmdeg 5
E pmRA 0.9 E pmDE 1.0 EpRAm 1990.95 EpDEm 1990.95
Num 19 Q RAmdeg 0.6 Q DEmdeg 0.6 Q pmRA 0.6
Q pmDE 0.6 BTmag 7.365 E BTmag 0.015 VTmag 7.476
E VTmag 0.011 Prox 999 TYC T HIP 99995
CCDM RAdeg 304.29074444 DEdeg 15.87269306 EpRA 1990 1.59
EpDE 1990 1.50 E RAdeg 4.6 E DEdeg 4.6 Posflg
Corr -0.1
SAO
SAO 105926 DelFlag RA1950 PmRA1950 -0.0007
DE1950 PmDE1950 -0.011 Vmag 7.3 SpType B9
Double code Source 70 CatNum 28188 DM BD+15 4120
DMcomp BDsup HD 192954 M HD 0
GC 28188 RA1950rad 5.30083027 DE1950rad 0.27431515 PmRA2000 -0.0006
PmDE2000 -0.013
Hipparcos
Catalog H HIP 99995 Proxy RAhms 20 17 09.78
DEdms +15 52 21.7 Vmag 7.48 VarFlag 2 R Vmag H
RAdeg 304.291 DEdeg 15.8727 AstroRef Plx 2.76
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 192954 BD BD+15 4120
CD CP Dm number +15 4120 VIred -0.07
SpType B9 R SpType Coord arcsec 2000 201709.78+155221.7
Hipparcos 2
HIP 99995 Sn 5 So 0 Nc 1
RArad 5.3108754083 DErad 0.2770307944 Plx 3.48 PmRA -4.09
PmDE -10.35 E RArad 0.46 E DErad 0.48 E Plx 0.66
E pmRA 0.68 E pmDE 0.66 Hpmag 7.4522 E Hpmag 0.0026
SHp 0.077 VA 2 BV -0.089 E BV 0.011
VI -0.07
 
 
20172+1553 B
 
 
Coord arcsec 2000 201711.63+155219.8 Coord calc 201711.63+155219.8 Mag 13.4 PmRA -1.00
PmDE -53.0 Calc delta mag 5.92
 
 
20172+1553 C
 
 
Coord arcsec 2000 201711.60+155218.4 Mag 15.4 Calc delta mag 7.92 Calc coord yes