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Current system
07187-2457
HJ 3948 AB
Tau CMa


Nearby doubles
6' : 07184-2459
FGS 12

7' : 07192-2457
B 133

9' : 07188-2449
BRT2893

9' : 07193-2453
B 134

9' : 07189-2506
TDS4705

16' : 07199-2500
B 2142

18' : 07188-2440
B 2140

19' : 07193-2441
HDS1022

19' : 07190-2439
B 2141

22' : 07178-2515
TDS4683

24' : 07178-2439
BRT2890

27' : 07181-2432
TDS4688

28' : 07183-2431
TDS 353

29' : 07169-2513
TDS4670

32' : 07177-2526
RST2468

33' : 07195-2527
BRT2895

35' : 07196-2530
B 717

37' : 07161-2507
RST3505

37' : 07186-2421
TDS4700

38' : 07200-2425
BU 331

40' : 07169-2427
TDS4669

40' : 07184-2537
BRT2892

46' : 07160-2523
TDS4648

47' : 07219-2513
TDS 363

47' : 07218-2517
TDS4739

51' : 07208-2416
TDS4722



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 07187-2457 : COMPONENTS
 
 
  A Ab B C D
Ab pa=133.8°
sep=0.10"
 
B pa=90.2°
sep=7.54"
pa=89.7°
sep=7.47"
 
C pa=86.6°
sep=12.88"
pa=86.3°
sep=12.81"
pa=81.5°
sep=5.38"
 
D pa=76.8°
sep=76.01"
pa=76.7°
sep=75.96"
pa=75.3°
sep=68.70"
pa=74.8°
sep=63.36"
 
E pa=86.9°
sep=0.85"
pa=81.8°
sep=0.79"
pa=270.6°
sep=6.69"
pa=266.6°
sep=12.03"
pa=256.7°
sep=75.18"
 
 
07187-2457 A
 
 
Name Tau CMa Coord arcsec 2000 071842.49-245715.8 Mag 4.42 Spectral class O9II (blue)
PmRA -2.00 PmDE -1.0 SAO 173446 HIP 35415
Tycho2 6541-04204-1 HD 57061 HR 2782 GC 9736
CD CD-24 5176 CP CP-24 2216 Bayer Tau Canis Majoris Bayer name Tau CMa
Flamsteed 30 Canis Majoris Flamsteed name 30 CMa
Tycho2
Tycho2 6541-04204-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 4.193 E BTmag 0.014 VTmag 4.383
E VTmag 0.009 Prox 569 TYC T HIP 35415
CCDM AP RAdeg 109.67703083 DEdeg -24.95438417 EpRA 1990 1.66
EpDE 1990 1.78 E RAdeg 3.2 E DEdeg 3.1 Posflg P
Corr -0.2
SAO
SAO 173446 DelFlag RA1950 PmRA1950 -0.001
DE1950 PmDE1950 0.008 Vmag 4.4 SpType Oe5
Double code Source 70 CatNum 9736 DM CD-24 5176
DMcomp BDsup HD 57061 M HD 0
GC 9736 RA1950rad 1.90517275 DE1950rad -0.43392058 PmRA2000 -0.0007
PmDE2000 0.011
Hipparcos
Catalog H HIP 35415 Proxy H RAhms 07 18 42.49
DEdms -24 57 15.8 Vmag 4.37 VarFlag 1 R Vmag H
RAdeg 109.677 DEdeg -24.9544 AstroRef * Plx 1.02
CCDM 07187-2457 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP PA
Theta 299 Rho 0.151 HD 57061 BD
CD CD-24 5176 CP CP-24 2216 Dm number -24 5176 VIred -0.1
SpType O9Ib R SpType Coord arcsec 2000 071842.49-245715.8
Hipparcos 2
HIP 35415 Sn 55 So 3 Nc 2
RArad 1.9142253386 DErad -0.4355361773 Plx 1.09 PmRA -2.31
PmDE 5.02 E RArad 0.28 E DErad 0.41 E Plx 0.59
E pmRA 0.4 E pmDE 0.55 Hpmag 4.3329 E Hpmag 0.0013
SHp 0.02 VA 1 BV -0.132 E BV 0.03
VI -0.1
CCDM
Ccdm 07187-2457 RComp Comp A Note1
Note2 Discov num DRAs 0.46 DDEs -15.4
R dRAs 10 Year Theta Rho
Obs 5 Vmag 4.4 Sp Oe PmNote *
PmRA -11 PmDE 6 Dm number -24 5176 Cat1 CD
Name2 173446 Cat2 SAO HD 57061 M HD
ADS BDS A 5977 M ADS BDS N IDS IDS 07146S2446A
HIC 35415
 
 
07187-2457 Ab
 
 
Coord arcsec 2000 071842.50-245715.9 Mag 5.33 Calc delta mag 0.44 Calc coord yes
 
 
07187-2457 B
 
 
Coord arcsec 2000 071843.04-245715.8 Mag 10.2 Calc delta mag 5.31 Calc coord yes
CCDM
Ccdm 07187-2457 RComp Comp B Note1
Note2 Discov num HJ 3948 DRAs DDEs
R dRAs Year 1876 Theta 090 Rho 8.2
Obs 9 Vmag 10.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 5977 M ADS BDS N IDS IDS 07146S2446B
HIC 35415
 
 
07187-2457 C
 
 
Coord arcsec 2000 071843.44-245715.0 Mag 11.2 Calc delta mag 6.31 Calc coord yes
CCDM
Ccdm 07187-2457 RComp Comp C Note1
Note2 Discov num HJ 3948 DRAs DDEs
R dRAs Year 1876 Theta 079 Rho 14.5
Obs 5 Vmag 11.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 5977 M ADS BDS N IDS IDS 07146S2446C
HIC 35415
 
 
07187-2457 D
 
 
Coord arcsec 2000 071847.93-245658.4 Mag 8.22 PmRA 14.00 PmDE 10.0
Calc delta mag 3.33 Calc coord yes
CCDM
Ccdm 07187-2457 RComp Comp D Note1
Note2 Discov num HJ 3948 DRAs DDEs
R dRAs Year 1834 Theta 074 Rho 85.0
Obs 4 Vmag 8.8 Sp PmNote
PmRA PmDE Dm number -24 5180 Cat1 CD
Name2 Cat2 HD M HD
ADS BDS A 5977 M ADS BDS N IDS IDS 07146S2446D
HIC
 
 
07187-2457 E
 
 
Coord arcsec 2000 071842.55-245715.8 Mag 9.7 Calc delta mag 4.81 Calc coord yes