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Doubles in session


Current system
20418+1231
STF 2715
HD 197179


Nearby doubles
18' : 20426+1244
STF2718AB

19' : 20420+1212
BPM2231

20' : 20428+1244
BPM2234

21' : 20405+1240
HEI 278

28' : 20410+1206
HEI 587

29' : 20402+1248
BPM2223

32' : 20426+1300
GWP2988

34' : 20441+1258
J 1889

35' : 20414+1157
TDT2472

36' : 20440+1225
HJ 1566AB

38' : 20439+1255
J 1888

40' : 20419+1150
HEI 588

41' : 20391+1243
BPM2218

42' : 20440+1256
DAM 218

42' : 20442+1209
BPM2240

43' : 20429+1152
BPM2235

47' : 20444+1205
A 875

48' : 20449+1219
STF2723AB

49' : 20450+1244
BU 64AB

50' : 20396+1310
J 912

53' : 20404+1143
UC 4253

56' : 20446+1154
BPM2251

57' : 20413+1327
BPM2227AB

58' : 20446+1312
TDS1098

63' : 20460+1235
KPP 477

63' : 20408+1332
GWP2982



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 20418+1231 : COMPONENTS
 
 
  A
B pa=2.3°
sep=12.39"
 
 
20418+1231 A
 
 
Componente originario normalizzato AB Name HD 197179 Coord arcsec 2000 204146.01+123107.1 Mag 7.8
Spectral class F8 (yellow-white) PmRA 50.00 PmDE -33.0 SAO 106390
HIP 102131 Tycho2 1097-02967-1 HD 197179 GC 28837
BD BD+12 4431
Tycho2
Tycho2 1097-02967-1 Pflag RAmdeg 310.44170032 DEmdeg 12.51862588
PmRA 50.1 PmDE -33.5 E RAmdeg 5 E DEmdeg 6
E pmRA 1.4 E pmDE 1.3 EpRAm 1991.50 EpDEm 1991.16
Num 10 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.1
Q pmDE 1.2 BTmag 8.252 E BTmag 0.016 VTmag 7.800
E VTmag 0.011 Prox 124 TYC T HIP 102131
CCDM A RAdeg 310.44158194 DEdeg 12.51870500 EpRA 1990 1.71
EpDE 1990 1.49 E RAdeg 4.8 E DEdeg 5.6 Posflg
Corr -0.1
SAO
SAO 106390 DelFlag RA1950 PmRA1950 0.0032
DE1950 PmDE1950 -0.041 Vmag 7.6 SpType F8
Double code Source 70 CatNum 28837 DM BD+12 4431
DMcomp BDsup HD 197179 M HD 0
GC 28837 RA1950rad 5.40785155 DE1950rad 0.2153628 PmRA2000 0.0033
PmDE2000 -0.044
Hipparcos
Catalog H HIP 102131 Proxy RAhms 20 41 45.98
DEdms +12 31 07.4 Vmag 7.76 VarFlag R Vmag G
RAdeg 310.442 DEdeg 12.5187 AstroRef A Plx 12.29
CCDM 20418+1231 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual A M HIP
Theta Rho HD 197179 BD BD+12 4431
CD CP Dm number +12 4431 VIred 0.52
SpType F8 R SpType Coord arcsec 2000 204145.98+123107.4
Hipparcos 2
HIP 102131 Sn 95 So 3 Nc 1
RArad 5.4182275825 DErad 0.2184926819 Plx 10.82 PmRA 49.91
PmDE -32.28 E RArad 0.8 E DErad 0.58 E Plx 1.01
E pmRA 1.04 E pmDE 0.64 Hpmag 7.8481 E Hpmag 0.0053
SHp 0.018 VA 0 BV 0.453 E BV 0.015
VI 0.52
CCDM
Ccdm 20418+1231 RComp Comp A Note1
Note2 Discov num DRAs -2.03 DDEs 6.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.7 Sp F8 PmNote *
PmRA 42 PmDE -38 Dm number +12 4431 Cat1 BD
Name2 +12 2368 Cat2 AGK2/3 HD 197179 M HD
ADS BDS A14168 M ADS BDS N IDS IDS 20370N1210A
HIC 102131
 
 
20418+1231 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204146.04+123119.5 Mag 10.22 PmRA 52.00
PmDE -32.0 HIP 102132 Calc delta mag 2.42 Calc coord yes
Hipparcos
Catalog H HIP 102132 Proxy RAhms 20 41 46.01
DEdms +12 31 19.7 Vmag 10.7 VarFlag R Vmag H
RAdeg 310.442 DEdeg 12.5221 AstroRef B Plx -3.12
CCDM 20418+1231 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual A M HIP
Theta Rho HD BD
CD CP Dm number VIred 0.71
SpType R SpType Coord arcsec 2000 204146.01+123119.7
Hipparcos 2
HIP 102132 Sn 95 So 3 Nc 1
RArad 5.4182299525 DErad 0.218552612 Plx 9.67 PmRA 48.68
PmDE -34.2 E RArad 0.96 E DErad 0.75 E Plx 1.22
E pmRA 1.21 E pmDE 0.83 Hpmag 10.9827 E Hpmag 0.0817
SHp 0 VA 0 BV 0.923 E BV 0.079
VI 0.92
CCDM
Ccdm 20418+1231 RComp Comp B Note1
Note2 Discov num STF2715 DRAs DDEs
R dRAs Year 1830 Theta 003 Rho 12.0
Obs 6 Vmag 10.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14168 M ADS BDS N IDS IDS 20370N1210B
HIC 102132