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Doubles in session


Current system
20178+1520
CHE 281


Nearby doubles
2' : 20179+1520
SMA 116

5' : 20174+1522
CHE 276

6' : 20181+1519
CHE 290

7' : 20180+1526
CHE 286

10' : 20172+1515
CHE 274AB

10' : 20178+1530
CHE 280

11' : 20185+1519
BPM2100

11' : 20182+1511
A 1670

12' : 20179+1508
A 1669

13' : 20183+1509
CHE 294AB

14' : 20168+1523
CHE 267

15' : 20183+1508
BPM2098

16' : 20177+1504
BPM2091

16' : 20167+1513
CHE 265

17' : 20182+1504
BPM2097

18' : 20189+1524
CHE 302

18' : 20177+1503
CHE 279

19' : 20188+1530
TOB 319AB

19' : 20169+1506
CHE 268AB

19' : 20171+1536
CHE 272

20' : 20190+1526
BPM2104

20' : 20180+1501
CHE 287

20' : 20177+1539
CHE 278

21' : 20183+1539
CHE 293

21' : 20190+1530
BKO 563

22' : 20170+1538
CHE 269



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
 
 
WDS 20178+1520 : COMPONENTS
 
 
  A
B pa=317.2°
sep=17.37"
 
 
20178+1520 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 201746.51+151935.0 Mag 11.2 Spectral class A5 (white)
PmRA 3.00 PmDE -1.0 Tycho2 1631-00541-1 HD 355392
Tycho2
Tycho2 1631-00541-1 Pflag RAmdeg 304.44378775 DEmdeg 15.32640268
PmRA 4.1 PmDE -6.0 E RAmdeg 60 E DEmdeg 56
E pmRA 1.7 E pmDE 1.6 EpRAm 1973.72 EpDEm 1974.56
Num 4 Q RAmdeg 0.6 Q DEmdeg 2.2 Q pmRA 0.6
Q pmDE 2.2 BTmag 11.799 E BTmag 0.099 VTmag 11.199
E VTmag 0.099 Prox 999 TYC HIP
CCDM RAdeg 304.44377833 DEdeg 15.32641667 EpRA 1990 1.68
EpDE 1990 1.60 E RAdeg 67.4 E DEdeg 61.9 Posflg
Corr -0.1
 
 
20178+1520 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 201745.69+151947.8 Mag 12.6 Spectral class A8 (white)
PmRA 9.00 PmDE 14.0 Calc delta mag 1.4 Calc coord yes