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Doubles in session


Current system
18545+2037
STF 2415
HD 175427


Nearby doubles
25' : 18528+2043
TDT1105

41' : 18517+2041
J 809

41' : 18525+2007
TDT1101

44' : 18527+2112
TDT1103

55' : 18567+2123
HDS2684

55' : 18509+2058
COU 317AB

59' : 18523+2126
ISO 8

59' : 18515+2117
TDT1091

62' : 18587+2056
TDT1159

64' : 18558+1935
KU 122

65' : 18500+2043
HU 328

66' : 18574+2129
HU 329

68' : 18505+2002
KU 121

68' : 18508+1954
KPP 426

77' : 18501+1952
TDT1079

81' : 18542+2158
TDS 952

82' : 18496+1953
MMA 28

83' : 18498+2124
HU 327

83' : 18529+1919
J 470

84' : 18487+2053
RAS 27

85' : 18587+1936
HU 330

85' : 18490+2110
STF2401AB

89' : 18482+2028
TDT1060

92' : 18599+1937
L 43

94' : 18585+2152
TDT1155

96' : 18523+2206
TDT1096



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.

18545+2037 STF 2415 (HD 175427)

 
 
18h 54m 32.84s +20° 36' 55.1" P.A. 290.00 sep 2.0 mag 7.07,8.73 Sp A0IV dist. 194.93 pc (635.86 l.y.)
 
 
Coord 2000 18545+2037 Discov num STF2415 Comp Coord arcsec 2000 18 54 32.84 +20 36 55.1
Date first 1831 Date last 2015 Obs 74
Pa first 299 Pa last 289.8 P.A. Now (θ) 289.8°
Sep first 2.0 Sep last 1.977 Sep. Now (ρ) 1.977"
Mag pri 7.07 Mag sec 8.73 delta mag (ΔM) 1.66 Spectral class A0IV (white)
Pri motion ra +004 Sec motion ra +004
Pri motion dec -002 Sec motion dec -002
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 175427 Constellation Hercules SAO 86563 HIP 92800
Tycho2 1592-00227-1 Gaia DR2 4519122120218359552 HD 175427 GC 25948
BD BD+20 3985 Distance 194.93 Distance ly 635.86
 
 
WDS 18545+2037 STF 2415 (HD 175427) : NOTES
 
 
No records found.

 
 
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
18545+2037 STF2415 2004 67 290 2.0 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2007 70 290 2.0 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2010 72 289 1.9 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2011 73 289 2.0 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2013 73 287 1.9 7.07 8.73 A0IV D 185432.84+203655.1
18545+2037 STF2415 2015 74 290 2.0 7.07 8.73 A0IV 185432.84+203655.1

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

 
 
WDS 18545+2037 STF 2415 (HD 175427) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18545+2037 STF 2415 (HD 175427) : MEASURES
 
 
Records found: 1
Show date username difficulty sep sep_sigma pa pa_sigma delta_mag # notes
Show 12/06/21 northisup easy 2.00   293.00   1.50 1
 
 
WDS 18545+2037 (HD 175427) : VIRTUAL EYEPIECE
 
 

18545+2037 STF2415A mag 7.07 Sp A0IV 18545+2037 STF2415B sep 1.9 P.A. 291.00 mag 8.73 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 18545+2037 (HD 175427) : ALADIN DSS IMAGE @ 18h 54m 32.84s +20° 36' 55.1"
 
 
 
 
WDS 18545+2037 STF 2415 (HD 175427) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18545+2037 STF2415 distance=0' 18528+2043 TDT1105 distance=25' 18517+2041 J 809 distance=41' 18525+2007 TDT1101 distance=41' 18527+2112 TDT1103 distance=44' 18567+2123 HDS2684 distance=55' 18509+2058 COU 317AB distance=55' 18509+2058 COU 317AC distance=55' 18523+2126 ISO 8 distance=59' 18515+2117 TDT1091 distance=59' 18587+2056 TDT1159 distance=62' 18558+1935 KU 122 distance=64' 18500+2043 HU 328 distance=65' 18574+2129 HU 329 distance=66' 18505+2002 KU 121 distance=68' 18508+1954 KPP 426 distance=68' 18501+1952 TDT1079 distance=77' 18542+2158 TDS 952 distance=81' 18496+1953 MMA 28 distance=82' 18498+2124 HU 327 distance=83' 18529+1919 J 470 distance=83' 18487+2053 RAS 27 distance=84' 18587+1936 HU 330 distance=85' 18490+2110 STF2401AB distance=85' 18490+2110 STF2401AC distance=85' 18482+2028 TDT1060 distance=89' 18599+1937 L 43 distance=92' 18585+2152 TDT1155 distance=94' 18523+2206 TDT1096 distance=96' 18511+2200 TDT1086 distance=96' 19011+2009 COU 319AB distance=97' 19011+2009 GII 278Aa,Ab distance=97' 18498+2149 BRT2449 distance=99' 18586+1916 KPP4132 distance=100' 18589+1911 L 65 distance=100' 18534+1856 TDT1114 distance=103' 18534+1851 LDS5867AB distance=106' 18534+1851 SKF 331AC distance=106' 18474+1957 TDT1056 distance=109' 18489+1920 DCH 121 distance=111' 18473+2125 GRV 239 distance=112' 18515+2223 TDT1090 distance=115' 19019+1944 KPP1747 distance=116' 18585+1855 TDT1156 distance=116' 18558+1839 TDT1132 distance=119' 18545+1837 HDS2680 distance=121' 18547+2239 MKT 9Aa,Ab distance=122' 18547+2239 BU 646AB distance=122' 18547+2239 BU 646AC distance=122' 19027+2119 KPP 649 distance=122' 18547+2239 BU 646BC distance=123' 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 18545+2037 STF2415 290 2.0
Show 18528+2043 TDT1105 12 0.6 25
Show 18517+2041 J 809 211 1.6 41
Show 18525+2007 TDT1101 117 0.6 41
Show 18527+2112 TDT1103 278 1.3 44
Show 18567+2123 HDS2684 350 0.6 55
Show 18509+2058 COU 317 AB 94 1.5 55
Show 18509+2058 COU 317 AC 2 17.3 55
Show 18523+2126 ISO 8 138 0.2 59
Show 18515+2117 TDT1091 297 0.7 59
Show 18587+2056 TDT1159 104 0.5 62
Show 18558+1935 KU 122 151 22.2 64
Show 18500+2043 HU 328 187 4.8 65
Show 18574+2129 HU 329 158 0.1 66
Show 18505+2002 KU 121 312 31.5 68
Show 18508+1954 KPP 426 97 4.6 68
Show 18501+1952 TDT1079 295 1.3 77
Show 18542+2158 TDS 952 70 1.1 81
Show 18496+1953 MMA 28 70 13.9 82
Show 18498+2124 HU 327 60 0.3 83
Show 18529+1919 J 470 310 3.4 83
Show 18487+2053 RAS 27 218 1.2 84
Show 18587+1936 HU 330 33 0.7 85
Show 18490+2110 STF2401 AB 38 4.1 85
Show 18490+2110 STF2401 AC 149 92.9 85
Show 18482+2028 TDT1060 175 0.6 89
Show 18599+1937 L 43 289 2.4 92
Show 18585+2152 TDT1155 325 0.6 94
Show 18523+2206 TDT1096 313 1.6 96
Show 18511+2200 TDT1086 117 0.6 96
Show 19011+2009 COU 319 AB 80 2.1 97
Show 19011+2009 GII 278 Aa,Ab 132 0.2 97
Show 18498+2149 BRT2449 229 3.9 99
Show 18586+1916 KPP4132 105 1.8 100
Show 18589+1911 L 65 68 8.7 100
Show 18534+1856 TDT1114 107 0.6 103
Show 18534+1851 LDS5867 AB 207 210.7 106
Show 18534+1851 SKF 331 AC 239 2.6 106
Show 18474+1957 TDT1056 171 4.6 109
Show 18489+1920 DCH 121 10 0.4 111
Show 18473+2125 GRV 239 244 7.6 112
Show 18515+2223 TDT1090 306 0.8 115
Show 19019+1944 KPP1747 13 13.5 116
Show 18585+1855 TDT1156 138 0.7 116
Show 18558+1839 TDT1132 218 1.0 119
Show 18545+1837 HDS2680 93 4.0 121
Show 18547+2239 MKT 9 Aa,Ab 271 0.0 122
Show 18547+2239 BU 646 AB 37 34.4 122
Show 18547+2239 BU 646 AC 23 36.9 122
Show 19027+2119 KPP 649 236 5.9 122
Show 18547+2239 BU 646 BC 316 9.1 123

 
 
WDS 18545+2037 : COMPONENTS
 
 
  A
B pa=291.0°
sep=1.87"
 
 
18545+2037 A
 
 
Componente originario normalizzato AB Name HD 175427 Coord arcsec 2000 185432.84+203655.1 Mag 7.07
Spectral class A0IV (white) PmRA 4.00 PmDE -2.0 SAO 86563
HIP 92800 Tycho2 1592-00227-1 HD 175427 GC 25948
BD BD+20 3985
Tycho2
Tycho2 1592-00227-1 Pflag P RAmdeg 283.63684630 DEmdeg 20.61531932
PmRA 3.8 PmDE -2.4 E RAmdeg 4 E DEmdeg 4
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.44 EpDEm 1991.62
Num 5 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.2
Q pmDE 0.9 BTmag 7.166 E BTmag 0.015 VTmag 7.071
E VTmag 0.010 Prox 20 TYC T HIP 92800
CCDM A RAdeg 283.63688944 DEdeg 20.61530639 EpRA 1990 1.53
EpDE 1990 1.72 E RAdeg 3.7 E DEdeg 3.5 Posflg D
Corr 0.2
SAO
SAO 86563 DelFlag RA1950 PmRA1950 0.0002
DE1950 PmDE1950 -0.002 Vmag 7 SpType A0
Double code Source 70 CatNum 25948 DM BD+20 3985
DMcomp BDsup HD 175427 M HD 0
GC 25948 RA1950rad 4.94098908 DE1950rad 0.35868032 PmRA2000 0.0003
PmDE2000 -0.002
Hipparcos
Catalog H HIP 92800 Proxy H RAhms 18 54 32.85
DEdms +20 36 55.1 Vmag 6.85 VarFlag R Vmag H
RAdeg 283.637 DEdeg 20.6153 AstroRef A Plx 4.43
CCDM 18545+2037 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 291 Rho 1.988 HD 175427 BD BD+20 3985
CD CP Dm number +20 3985 VIred 0.07
SpType A0 R SpType Coord arcsec 2000 185432.85+203655.1
Hipparcos 2
HIP 92800 Sn 15 So 3 Nc 2
RArad 4.9503976138 DErad 0.3598049733 Plx 5.13 PmRA 1.73
PmDE -2.24 E RArad 0.3 E DErad 0.36 E Plx 0.62
E pmRA 0.4 E pmDE 0.5 Hpmag 6.8959 E Hpmag 0.0008
SHp 0.01 VA 0 BV 0.121 E BV 0.007
VI 0.14
CCDM
Ccdm 18545+2037 RComp Comp A Note1
Note2 Discov num DRAs 2.83 DDEs -5.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.0 Sp A0 PmNote *
PmRA 4 PmDE -3 Dm number +20 3985 Cat1 BD
Name2 +20 1985 Cat2 AGK2/3 HD 175427 M HD
ADS BDS A11816 M ADS BDS N IDS IDS 18502N2029A
HIC 92800
 
 
18545+2037 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 185432.72+203655.8 Mag 8.73 PmRA 4.00
PmDE -2.0 Tycho2 1592-00227-2 Calc delta mag 1.66 Calc coord yes
Tycho2
Tycho2 1592-00227-2 Pflag P RAmdeg 283.63684630 DEmdeg 20.61531932
PmRA 3.8 PmDE -2.4 E RAmdeg 4 E DEmdeg 4
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.44 EpDEm 1991.62
Num 5 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.2
Q pmDE 0.9 BTmag 8.955 E BTmag 0.016 VTmag 8.727
E VTmag 0.012 Prox 20 TYC T HIP 92800
CCDM B RAdeg 283.63634222 DEdeg 20.61549694 EpRA 1990 1.58
EpDE 1990 1.71 E RAdeg 6.7 E DEdeg 6.0 Posflg D
Corr 0.2
CCDM
Ccdm 18545+2037 RComp Comp B Note1
Note2 Discov num STF2415 DRAs DDEs
R dRAs Year 1960 Theta 293 Rho 1.9
Obs 28 Vmag 8.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11816 M ADS BDS N IDS IDS 18502N2029B
HIC 92800