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Doubles in session


Current system
20046+0914
STF 2621
HD 190434


Nearby doubles
16' : 20038+0927
J 2295

33' : 20066+0928
A 1196

34' : 20047+0949
J 545

39' : 20020+0910
J 3044

40' : 20072+0919
GRV 314

46' : 20025+0841
WIS 336

50' : 20078+0924
STF2628

55' : 20011+0931
CHR 118

55' : 20028+1002
J 174

57' : 20029+0824
STF2615

61' : 20013+0950
J 173

61' : 20006+0859
J 3040

62' : 20010+0853
J 3041AB

62' : 20079+0836
J 1873

66' : 20081+0954
HEI 580

68' : 20005+0844
HDS2850

71' : 20019+1012
J 3043

75' : 20030+0804
FMR 156

76' : 20019+1019
GWP2917

79' : 20078+1016
KU 127

81' : 20057+1034
J 134

82' : 20016+1023
BRT3227

82' : 20067+1029
GRV 312

83' : 20044+1036
J 602

84' : 20071+0759
A 609

85' : 20078+0805
TDT2006



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.

20046+0914 STF 2621 (HD 190434)

 
 
20h 04m 34.52s +09° 14' 24.2" P.A. 224.00 sep 5.7 mag 8.36,8.62 Sp B8V+A1V dist. 228.83 pc (746.44 l.y.)
 
 
Coord 2000 20046+0914 Discov num STF2621 Comp Coord arcsec 2000 20 04 34.52 +09 14 24.2
Date first 1828 Date last 2017 Obs 82
Pa first 223 Pa last 223.7 P.A. Now (θ) 223.7°
Sep first 5.7 Sep last 5.688 Sep. Now (ρ) 5.688"
Mag pri 8.36 Mag sec 8.62 delta mag (ΔM) 0.26 Spectral class B8V+A1V (blue-white/white)
Pri motion ra -004 Sec motion ra -004
Pri motion dec -014 Sec motion dec -015
Notes
rPM=0.064 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 190434 Constellation Aquila SAO 125416 HIP 98862
Tycho2 1072-00265-1 Gaia DR2 4299223441100705152 HD 190434 GC 27844
BD BD+08 4320 Distance 228.83 Distance ly 746.44
 
 
WDS 20046+0914 STF 2621 (HD 190434) : 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
20046+0914 STF2621 2006 78 224 5.5 8.36 8.62 B8V A1V D 200434.52+091424.2
20046+0914 STF2621 2010 81 225 5.7 8.36 8.62 B8V+A1V 200434.52+091424.2
20046+0914 STF2621 2017 82 224 5.7 8.36 8.62 B8V+A1V 200434.52+091424.2

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

 
 
WDS 20046+0914 STF 2621 (HD 190434) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20046+0914 STF 2621 (HD 190434) : MEASURES
 
 
No records found.

 
 
WDS 20046+0914 (HD 190434) : VIRTUAL EYEPIECE
 
 

20046+0914 STF2621A mag 8.36 Sp B8V 20046+0914 STF2621B sep 5.7 P.A. 223.30 mag 8.62 Sp A1V 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 20046+0914 (HD 190434) : ALADIN DSS IMAGE @ 20h 04m 34.52s +09° 14' 24.2"
 
 
 
 
WDS 20046+0914 STF 2621 (HD 190434) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20046+0914 STF2621 distance=0' 20038+0927 J 2295 distance=16' 20066+0928 A 1196 distance=33' 20047+0949 J 545 distance=34' 20020+0910 J 3044 distance=39' 20072+0919 GRV 314 distance=40' 20025+0841 WIS 336 distance=46' 20078+0924 STF2628 distance=50' 20011+0931 CHR 118 distance=55' 20028+1002 J 174 distance=55' 20029+0824 STF2615 distance=57' 20013+0950 J 173 distance=61' 20006+0859 J 3040 distance=61' 20010+0853 J 3041BC distance=62' 20010+0853 J 3041AB distance=62' 20079+0836 J 1873 distance=62' 20081+0954 HEI 580 distance=66' 20005+0844 HDS2850 distance=68' 20019+1012 J 3043 distance=71' 20030+0804 FMR 156 distance=75' 20019+1019 GWP2917 distance=76' 20078+1016 KU 127 distance=79' 20057+1034 J 134 distance=81' 20016+1023 BRT3227 distance=82' 20067+1029 GRV 312 distance=82' 20044+1036 J 602 distance=83' 20071+0759 A 609 distance=84' 20078+0805 TDT2006 distance=85' 20066+1033 HJ 903 distance=85' 19591+0849 J 3038 distance=86' 19599+1007 J 831 distance=87' 20070+1034 TOB 306 distance=88' 20058+0748 J 546 distance=89' 20070+1035 HJ 904AB distance=89' 20072+1037 HJ 905 distance=91' 19584+0852 J 818AB distance=94' 19584+0852 J 818AC distance=94' 19584+0852 FYM 186BD distance=94' 19573+0918 J 2699 distance=95' 20101+0827 STF2635AB distance=96' 20101+0827 STF2635AC distance=96' 20101+0827 GMC 9AD distance=96' 20056+1049 BRT1333 distance=97' 20110+0902 J 3054 distance=98' 20014+1045 TOK 34Aa,Ab distance=102' 20014+1045 STF2613AB distance=102' 20107+1005 J 505 distance=104' 20100+1021 A 1199AB distance=105' 20100+1021 A 1199AC distance=105' 20064+0734 GMC 7 distance=105' 20066+0735 STTA198AB distance=105' 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 20046+0914 STF2621 224 5.7
Show 20038+0927 J 2295 278 6.1 16
Show 20066+0928 A 1196 242 0.3 33
Show 20047+0949 J 545 355 5.1 34
Show 20020+0910 J 3044 343 5.3 39
Show 20072+0919 GRV 314 269 36.5 40
Show 20025+0841 WIS 336 4 999.9 46
Show 20078+0924 STF2628 338 3.0 50
Show 20011+0931 CHR 118 175 0.3 55
Show 20028+1002 J 174 176 4.7 55
Show 20029+0824 STF2615 301 8.9 57
Show 20013+0950 J 173 53 6.3 61
Show 20006+0859 J 3040 187 5.2 61
Show 20010+0853 J 3041 BC 121 13.6 62
Show 20010+0853 J 3041 AB 128 6.5 62
Show 20079+0836 J 1873 175 7.5 62
Show 20081+0954 HEI 580 330 2.5 66
Show 20005+0844 HDS2850 114 1.9 68
Show 20019+1012 J 3043 178 7.4 71
Show 20030+0804 FMR 156 171 11.4 75
Show 20019+1019 GWP2917 113 3.2 76
Show 20078+1016 KU 127 179 20.2 79
Show 20057+1034 J 134 88 6.5 81
Show 20016+1023 BRT3227 149 3.5 82
Show 20067+1029 GRV 312 319 15.6 82
Show 20044+1036 J 602 318 4.7 83
Show 20071+0759 A 609 130 0.4 84
Show 20078+0805 TDT2006 79 0.7 85
Show 20066+1033 HJ 903 352 10.8 85
Show 19591+0849 J 3038 50 6.0 86
Show 19599+1007 J 831 276 7.3 87
Show 20070+1034 TOB 306 157 13.1 88
Show 20058+0748 J 546 289 2.9 89
Show 20070+1035 HJ 904 AB 308 30.0 89
Show 20072+1037 HJ 905 177 12.1 91
Show 19584+0852 J 818 AB 20 1.5 94
Show 19584+0852 J 818 AC 187 23.3 94
Show 19584+0852 FYM 186 BD 159 19.5 94
Show 19573+0918 J 2699 339 9.9 95
Show 20101+0827 STF2635 AB 80 7.7 96
Show 20101+0827 STF2635 AC 38 88.9 96
Show 20101+0827 GMC 9 AD 37 127.5 96
Show 20056+1049 BRT1333 6 3.3 97
Show 20110+0902 J 3054 164 5.0 98
Show 20014+1045 TOK 34 Aa,Ab 339 0.2 102
Show 20014+1045 STF2613 AB 354 3.5 102
Show 20107+1005 J 505 35 4.2 104
Show 20100+1021 A 1199 AB 244 3.0 105
Show 20100+1021 A 1199 AC 293 50.6 105
Show 20064+0734 GMC 7 316 40.3 105
Show 20066+0735 STTA198 AB 185 64.6 105

 
 
WDS 20046+0914 : COMPONENTS
 
 
  A
B pa=223.3°
sep=5.65"
 
 
20046+0914 A
 
 
Componente originario normalizzato AB Name HD 190434 Coord arcsec 2000 200434.52+091424.2 Mag 8.36
Spectral class B8V (blue-white) PmRA -4.00 PmDE -14.0 SAO 125416
HIP 98862 Tycho2 1072-00265-1 HD 190434 GC 27844
BD BD+08 4320
Tycho2
Tycho2 1072-00265-1 Pflag RAmdeg 301.14382955 DEmdeg 9.24005265
PmRA -2.7 PmDE -14.1 E RAmdeg 6 E DEmdeg 8
E pmRA 2.3 E pmDE 2.0 EpRAm 1991.62 EpDEm 1991.26
Num 5 Q RAmdeg 1.3 Q DEmdeg 1.5 Q pmRA 1.3
Q pmDE 1.5 BTmag 8.295 E BTmag 0.017 VTmag 8.364
E VTmag 0.015 Prox 57 TYC T HIP 98862
CCDM A RAdeg 301.14383583 DEdeg 9.24008611 EpRA 1990 1.70
EpDE 1990 1.44 E RAdeg 6.2 E DEdeg 8.0 Posflg
Corr 0.3
SAO
SAO 125416 DelFlag RA1950 PmRA1950 -0.0003
DE1950 PmDE1950 -0.008 Vmag 7.9 SpType B9
Double code Source 70 CatNum 27844 DM BD+08 4320
DMcomp A BDsup HD 190434 M HD 1
GC 27844 RA1950rad 5.24543987 DE1950rad 0.15878394 PmRA2000 -0.0001
PmDE2000 -0.011
Hipparcos
Catalog H HIP 98862 Proxy H RAhms 20 04 34.52
DEdms +09 14 24.3 Vmag 7.78 VarFlag R Vmag H
RAdeg 301.144 DEdeg 9.24008 AstroRef A Plx -0.81
CCDM 20046+0914 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 223 Rho 5.697 HD 190434 BD BD+08 4320
CD CP Dm number +08 4320 VIred 0.01
SpType B9... R SpType Coord arcsec 2000 200434.52+091424.3
Hipparcos 2
HIP 98862 Sn 15 So 3 Nc 2
RArad 5.2559515186 DErad 0.1612699202 Plx 4.37 PmRA -2.8
PmDE -14.1 E RArad 1.45 E DErad 1.15 E Plx 1.45
E pmRA 1.65 E pmDE 1.94 Hpmag 7.7888 E Hpmag 0.0016
SHp 0.01 VA 0 BV -0.011 E BV 0.017
VI 0.01
CCDM
Ccdm 20046+0914 RComp Comp A Note1
Note2 Discov num DRAs -1.49 DDEs 25.5
R dRAs 22 Year Theta Rho
Obs 2 Vmag 8.6 Sp B9 PmNote *
PmRA 0 PmDE 4 Dm number +08 4320 Cat1 BD
Name2 125416 Cat2 SAO HD 190434 M HD
ADS BDS A13330 M ADS BDS N IDS IDS 19598N0857A
HIC 98862
 
 
20046+0914 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 200434.26+091420.1 Mag 8.62 Spectral class A1V (white)
PmRA -4.00 PmDE -15.0 Tycho2 1072-02401-1 Calc delta mag 0.26
Calc coord yes
Tycho2
Tycho2 1072-02401-1 Pflag RAmdeg 301.14274318 DEmdeg 9.23889637
PmRA -0.6 PmDE -11.6 E RAmdeg 7 E DEmdeg 9
E pmRA 2.2 E pmDE 2.0 EpRAm 1991.60 EpDEm 1991.19
Num 5 Q RAmdeg 1.3 Q DEmdeg 1.7 Q pmRA 1.2
Q pmDE 1.6 BTmag 8.502 E BTmag 0.018 VTmag 8.615
E VTmag 0.018 Prox 57 TYC T HIP 98862
CCDM B RAdeg 301.14274444 DEdeg 9.23892389 EpRA 1990 1.72
EpDE 1990 1.45 E RAdeg 7.1 E DEdeg 9.1 Posflg
Corr 0.3
CCDM
Ccdm 20046+0914 RComp Comp B Note1
Note2 Discov num STF2621 DRAs -1.77 DDEs 21.4
R dRAs 91 Year 1829 Theta 223 Rho 5.7
Obs 99 Vmag 8.8 Sp PmNote *
PmRA 0 PmDE 6 Dm number Cat1
Name2 125415 Cat2 SAO HD M HD
ADS BDS A13330 M ADS BDS N IDS IDS 19598N0857B
HIC 98862