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Current system
06561-1403
STF 997 AB
Mu CMa


Nearby doubles
9' : 06556-1359
GAL 278

10' : 06558-1411
BRT1855

23' : 06551-1346
AOT 37

24' : 06563-1426
AOT 38

27' : 06575-1421
BRT1856

28' : 06577-1418
A 3041

29' : 06543-1412
AOT 35

29' : 06543-1415
STF 990AB

32' : 06579-1345
GAL 280AB

34' : 06538-1401
GAL 416

41' : 06588-1352
RST3478

43' : 06533-1416
GWP 844

43' : 06590-1403
AOT 39

46' : 06589-1423
BRT1857

47' : 06573-1446
GWP 853

47' : 06592-1347
GAL 284

55' : 06597-1346
TDS 314

56' : 06527-1338
GAL 271

62' : 06593-1322
BRT1858

67' : 06595-1319
BRT1859

71' : 07000-1321
BRT1860

72' : 06584-1300
HDS 969AB

73' : 06575-1253
BRT2656

74' : 06522-1448
BRT1854

78' : 06520-1313
TDS4225

78' : 06563-1521
GAL 279



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.

06561-1403 STF 997 AB (Mu CMa)

 
 
06h 56m 06.59s -14° 02' 33.6" P.A. 343.00 sep 2.9 mag 5.27,7.14 Sp G5III+A2 dist. 381.68 pc (1245.04 l.y.)
 
 
Coord 2000 06561-1403 Discov num STF 997 Comp AB Coord arcsec 2000 06 56 06.59 -14 02 33.6
Date first 1830 Date last 2017 Obs 74
Pa first 341 Pa last 343 P.A. Now (θ) 343°
Sep first 3.6 Sep last 2.851 Sep. Now (ρ) 2.851"
Mag pri 5.27 Mag sec 7.14 delta mag (ΔM) 1.87 Spectral class G5III+A2 (yellow/white)
Pri motion ra -002 Sec motion ra -002
Pri motion dec +007 Sec motion dec +007
Notes N (See Notes)
Nature of this double is uncertain.
 
 
06561-1403 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Mu CMa 152123 06 56 07 -14 02 34 STF 997 AB 2017 74 343 2.9 5.27 7.14 1.87 <===
Show 152123 06 56 07 -14 02 34 STF 997 AC 2014 12 288 86.6 5.27 10.32 5.05
Show 152123 06 56 07 -14 02 34 STF 997 AD 2014 12 63 104.7 5.27 10.64 5.37
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Mu CMa Constellation Canis Major SAO 152123 HIP 33345
Tycho2 5392-00913-1 Gaia DR2 2949326180717799040 HD 51250 HR 2593
GC 9103 ADS 5605 BD BD-13 1741 Bayer Mu Canis Majoris
Bayer name Mu CMa Flamsteed 18 Canis Majoris Flamsteed name 18 CMa Distance 381.68
Distance ly 1245.04 Bayer greek μ CMa
 
 
WDS 06561-1403 STF 997 AB (Mu CMa) : NOTES
 
 
discov_num notes refcode
STF 997 mu CMa = 18 CMa
 
 
REFERENCES
 
 
refcode metd author reference
STFA (F. Struve DD - Appendix list #1) ...................
STFB (F. Struve DD - Appendix list #2) ...................
StF1833A Ma - Struve, F.G.W. 1833MmRAS...5...13H
StF1833A +Mc cited by Herschel (MemRAS 5, 13, 1833)
StF1833B Ma - Struve, F.G.W. 1833AN.....10..389B
StF1833B cited by Bessel (AN 10, 389, 1833)
StF1837 Ma - Struve, F.G.W. 1837AN.....14...249
StF1837 Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837 (Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A Ma - Struve, F.G.W. 1844QB43.S66.......
StF1844A cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A Ma - Struve, F.G.W. .
StF1852A cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A Ma - Struve, F.G.W. 1865AN.....64...81E
StF1865A cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A Ma - Struve, F.G.W. 1875AN.....85..323D
StF1875A cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878 Ma - Struve, F.G.W. .
StF1878 Pulkova Observations 9, 1878
StF1878B Ma - Struve, F.G.W. 1878Obs.....2..239G
StF1878B cited by Gledhill (Obs 2, 239, 1878)
StF1880A Ma - Struve, F.G.W. 1880Obs.....3..535G
StF1880A cited by Gledhill (Obs 3, 535, 1880)
StF1906A Ma - Struve, F.G.W. 1906QB821.B972.....
StF1906A cited in BDS (Burnham Double Star Cat.), 1906
StF1906B Ma - Struve, F.G.W. 1906MmRAS..56....1L
StF1906B cited by Lewis (MemRAS 56, 1, 1906)
StF1922A Ma - Struve, F.G.W. 1922AN....216...49R
StF1922A cited by Rabe (AN 216, 49, 1922)
StF1932A Ma - Struve, F.G.W. 1932QB821.A43......
StF1932A cited in ADS (Aitken Double Star Cat.), 1932
StF2002 - - Weis, J.
StF2002 F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002 USNO Library : QB 821 .S8 W49 2002
StF2022 - - email note from Jan Weis: 6 July 2022
StF9999 Ma - Struve, F.G.W. ...................
StF9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
06561-1403 STF 997 AB 2004 67 345 3.2 5.27 7.14 G5III+A2 N D 065606.65-140236.4
06561-1403 STF 997 AB 2008 68 344 3.0 5.27 7.14 G5III+A2 N D 065606.65-140236.4
06561-1403 STF 997 AB 2011 71 344 2.8 5.27 7.14 G5III A2 N D 065606.65-140236.4
06561-1403 STF 997 AB 2015 72 346 3.1 5.27 7.14 G5III+A2 N 065606.59-140233.6
06561-1403 STF 997 AB 2017 73 343 2.9 5.27 7.14 G5III+A2 N 065606.59-140233.6

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 06561-1403 STF 997 AB (Mu CMa) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 06561-1403 STF 997 AB (Mu CMa) : MEASURES
 
 
No records found.

 
 
WDS 06561-1403 (Mu CMa) : VIRTUAL EYEPIECE
 
 

06561-1403 STF 997A mag 5.27 Sp G5III 06561-1403 STF 997B sep 2.8 P.A. 343.50 mag 7.14 Sp A2 06561-1403 STF 997C sep 84.3 P.A. 288.90 mag 10.32 Sp A2 06561-1403 STF 997D sep 102.2 P.A. 62.10 mag 10.64 Sp A2 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 06561-1403 (Mu CMa) : ALADIN DSS IMAGE @ 06h 56m 06.59s -14° 02' 33.6"
 
 
 
 
WDS 06561-1403 STF 997 AB (Mu CMa) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

06561-1403 STF 997AB distance=0' 06556-1359 GAL 278 distance=9' 06558-1411 BRT1855 distance=10' 06551-1346 AOT 37 distance=23' 06563-1426 AOT 38 distance=24' 06575-1421 BRT1856 distance=27' 06577-1418 A 3041 distance=28' 06543-1412 AOT 35 distance=29' 06543-1415 STF 990AB distance=29' 06543-1415 AOT 36AB,C distance=29' 06579-1345 GAL 280AB distance=32' 06538-1401 GAL 416 distance=34' 06588-1352 RST3478 distance=41' 06533-1416 GWP 844 distance=43' 06590-1403 AOT 39 distance=43' 06589-1423 BRT1857 distance=46' 06573-1446 GWP 853 distance=47' 06592-1347 GAL 284 distance=47' 06597-1346 TDS 314 distance=55' 06527-1338 GAL 271 distance=56' 06593-1322 BRT1858 distance=62' 06595-1319 BRT1859 distance=67' 07000-1321 BRT1860 distance=71' 06584-1300 HDS 969AB distance=72' 06584-1300 SKF2519AC distance=72' 06575-1253 BRT2656 distance=73' 06522-1448 BRT1854 distance=74' 06520-1313 TDS4225 distance=78' 06563-1521 GAL 279 distance=78' 06516-1445 BRT 566 distance=79' 06508-1423 RST4323 distance=81' 06514-1316 TDS4216 distance=83' 06561-1239 TDS4302 distance=84' 06506-1323 BRT1853 distance=90' 07023-1404 WFC 253 distance=91' 06499-1414 TVB 144 distance=92' 06549-1231 SKF2517 distance=94' 06503-1321 BRT1852 distance=94' 06533-1528 HDS 954 distance=96' 07027-1341 HU 47 distance=98' 06498-1439 BRT1851 distance=100' 07025-1443 LDS 850 distance=101' 06577-1224 BRT2657 distance=102' 07008-1519 STF1011 distance=103' 06506-1256 RST3470 distance=105' 06581-1544 TDS4334 distance=105' 06554-1217 GAL 274 distance=107' 06511-1524 RST3472AB distance=109' 06511-1524 DAM 424AB,C distance=109' 06561-1552 TDS4303 distance=110' 06511-1524 DAM 424CD distance=110' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 06561-1403 STF 997 AB 343 2.9
Show 06561-1403 STF 997 AC 288 86.6
Show 06561-1403 STF 997 AD 63 104.7
Show 06556-1359 GAL 278 110 8.2 9
Show 06558-1411 BRT1855 24 4.7 10
Show 06551-1346 AOT 37 102 9.2 23
Show 06563-1426 AOT 38 352 18.5 24
Show 06575-1421 BRT1856 168 4.3 27
Show 06577-1418 A 3041 50 1.0 28
Show 06543-1412 AOT 35 234 15.0 29
Show 06543-1415 STF 990 AB 275 3.2 29
Show 06543-1415 AOT 36 AB,C 342 31.3 29
Show 06579-1345 GAL 280 AB 205 10.6 32
Show 06538-1401 GAL 416 162 15.4 34
Show 06588-1352 RST3478 70 0.6 41
Show 06533-1416 GWP 844 207 263.1 43
Show 06590-1403 AOT 39 48 14.2 43
Show 06589-1423 BRT1857 102 2.8 46
Show 06573-1446 GWP 853 119 43.6 47
Show 06592-1347 GAL 284 77 4.1 47
Show 06597-1346 TDS 314 26 1.9 55
Show 06527-1338 GAL 271 256 9.8 56
Show 06593-1322 BRT1858 179 4.6 62
Show 06595-1319 BRT1859 192 3.0 67
Show 07000-1321 BRT1860 92 2.4 71
Show 06584-1300 HDS 969 AB 27 0.3 72
Show 06584-1300 SKF2519 AC 103 50.1 72
Show 06575-1253 BRT2656 90 3.4 73
Show 06522-1448 BRT1854 96 3.8 74
Show 06520-1313 TDS4225 236 2.3 78
Show 06563-1521 GAL 279 355 6.5 78
Show 06516-1445 BRT 566 123 4.8 79
Show 06508-1423 RST4323 195 0.1 81
Show 06514-1316 TDS4216 65 1.5 83
Show 06561-1239 TDS4302 81 0.5 84
Show 06506-1323 BRT1853 208 4.1 90
Show 07023-1404 WFC 253 330 10.3 91
Show 06499-1414 TVB 144 266 9.9 92
Show 06549-1231 SKF2517 172 19.8 94
Show 06503-1321 BRT1852 91 3.7 94
Show 06533-1528 HDS 954 126 0.6 96
Show 07027-1341 HU 47 313 1.8 98
Show 06498-1439 BRT1851 1 5.4 100
Show 07025-1443 LDS 850 123 28.7 101
Show 06577-1224 BRT2657 73 4.5 102
Show 07008-1519 STF1011 300 4.2 103
Show 06506-1256 RST3470 263 0.9 105
Show 06581-1544 TDS4334 135 0.7 105
Show 06554-1217 GAL 274 351 5.0 107
Show 06511-1524 RST3472 AB 275 1.9 109
Show 06511-1524 DAM 424 AB,C 272 38.8 109

 
 
WDS 06561-1403 : COMPONENTS
 
 
  A B C
B pa=343.5°
sep=2.84"
 
C pa=288.9°
sep=84.27"
pa=287.3°
sep=82.66"
 
D pa=62.1°
sep=102.24"
pa=63.7°
sep=101.71"
pa=83.1°
sep=171.30"
 
 
06561-1403 A
 
 
Name Mu CMa Coord arcsec 2000 065606.59-140233.6 Mag 5.27 Spectral class G5III (yellow)
PmRA -2.00 PmDE 7.0 SAO 152123 HIP 33345
Tycho2 5392-00913-1 HD 51250 HR 2593 GC 9103
BD BD-13 1741 Bayer Mu Canis Majoris Bayer name Mu Flamsteed 18 Canis Majoris
Flamsteed name 18 CMa
Tycho2
Tycho2 5392-00913-1 Pflag RAmdeg 104.02769375 DEmdeg -14.04346810
PmRA 0.0 PmDE -10.6 E RAmdeg 4 E DEmdeg 4
E pmRA 1.7 E pmDE 1.8 EpRAm 1991.78 EpDEm 1991.69
Num 4 Q RAmdeg 1.0 Q DEmdeg 2.0 Q pmRA 0.9
Q pmDE 1.9 BTmag 7.051 E BTmag 0.015 VTmag 5.271
E VTmag 0.009 Prox 28 TYC T HIP 33345
CCDM A RAdeg 104.02769361 DEdeg -14.04344389 EpRA 1990 1.85
EpDE 1990 1.75 E RAdeg 3.7 E DEdeg 4.0 Posflg D
Corr 0.0
SAO
SAO 152123 DelFlag RA1950 PmRA1950 -0.0005
DE1950 PmDE1950 0.002 Vmag 5.2 SpType G5
Double code Source 70 CatNum 9103 DM BD-13 1741
DMcomp BDsup HD 51250 M HD 0
GC 9103 RA1950rad 1.80562335 DE1950rad -0.24395218 PmRA2000 0
PmDE2000 0.005
Hipparcos
Catalog H HIP 33345 Proxy H RAhms 06 56 06.65
DEdms -14 02 36.4 Vmag 5 VarFlag R Vmag H
RAdeg 104.028 DEdeg -14.0434 AstroRef A Plx 3.59
CCDM 06561-1402 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 343 Rho 2.837 HD 51250 BD BD-13 1741
CD CP Dm number -13 1741 VIred 1.3
SpType B9.5V R SpType Coord arcsec 2000 065606.65-140236.4
Hipparcos 2
HIP 33345 Sn 15 So 3 Nc 2
RArad 1.8156257947 DErad -0.2451043797 Plx 2.62 PmRA -1.59
PmDE 6.33 E RArad 0.52 E DErad 0.4 E Plx 0.58
E pmRA 0.69 E pmDE 0.59 Hpmag 5.118 E Hpmag 0.0006
SHp 0.005 VA 0 BV 1.182 E BV 0.005
VI 1.3
 
 
06561-1403 B
 
 
Coord arcsec 2000 065606.53-140230.9 Mag 7.14 Spectral class A2 (white) PmRA -2.00
PmDE 7.0 Calc delta mag 1.87 Calc coord yes
 
 
06561-1403 C
 
 
Coord arcsec 2000 065601.11-140206.3 Mag 10.32 Spectral class A2 (white) PmRA 2.00
PmDE 8.0 Calc delta mag 5.05 Calc coord yes
 
 
06561-1403 D
 
 
Coord arcsec 2000 065612.80-140145.7 Mag 10.64 Spectral class A2 (white) PmRA -4.00
PmDE -10.0 Calc delta mag 5.37 Calc coord yes