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Current system
20527+0720
STF 2733
HD 198812


Nearby doubles
21' : 20539+0730
TDT2613

22' : 20516+0734
A 612

32' : 20516+0747
SKF1868

38' : 20552+0729
GWP3017

38' : 20543+0650
TDT2621

48' : 20546+0641
SLN 86

49' : 20554+0653
BRT2188

50' : 20560+0708
GWP3020

53' : 20556+0649
TDT2635

54' : 20533+0627
TDT2607

54' : 20562+0728
LDS4861

58' : 20501+0802
GWP3003

58' : 20487+0706
J 3223

59' : 20559+0646
NSN 739

62' : 20566+0659
TDT2649

62' : 20511+0623
STF2730

63' : 20539+0620
TDS1107

69' : 20540+0614
TDT2616

72' : 20504+0822
KPP4214

73' : 20550+0823
UC 4323

75' : 20537+0833
GWP3013

82' : 20504+0834
UC 4306

86' : 20554+0836
J 1318

87' : 20583+0654
KPP 481

88' : 20586+0723
J 1715

88' : 20559+0835
J 157



Selections
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Binary Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20527+0720 STF 2733 (HD 198812)

 
 
20h 52m 42.97s +07° 19' 47.6" P.A. 145.00 sep 40.2 mag 8.39,8.58 Sp A
 
 
Coord 2000 20527+0720 Discov num STF2733 Comp Coord arcsec 2000 20 52 42.97 +07 19 47.6
Date first 1800 Date last 2015 Obs 44
Pa first 138 Pa last 144.5 P.A. Now (θ) 144.5°
Sep first 43.3 Sep last 40.21 Sep. Now (ρ) 40.21"
Mag pri 8.39 Mag sec 8.58 delta mag (ΔM) 0.19 Spectral class A (white)
Pri motion ra +044 Sec motion ra +042
Pri motion dec -014 Sec motion dec -015
Notes N T (See Notes, Parallax indicates physical)
rPM=0.048 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 198812 Constellation Delphinus SAO 126322 Tycho2 0525-00124-1
Gaia DR2 1737611865223480704 HD 198812 GC 29121 DM BD+06 4675
 
 
WDS 20527+0720 STF 2733 (HD 198812) : NOTES
 
 
discov_num notes refcode
STF2733 B is BD+06@4675.
 
 
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
20527+0720 STF2733 2003 36 145 40.5 8.39 8.58 A N D 205242.97+071947.6
20527+0720 STF2733 2014 38 144 39.7 8.39 8.58 A N 205242.97+071947.6
20527+0720 STF2733 2015 40 145 40.2 8.39 8.58 A N 205242.97+071947.6

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

 
 
WDS 20527+0720 STF 2733 (HD 198812) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20527+0720 STF 2733 (HD 198812) : MEASURES
 
 
No records found.

 
 
WDS 20527+0720 (HD 198812) : VIRTUAL EYEPIECE
 
 

20527+0720 STF2733A mag 8.39 Sp A 20527+0720 STF2733B sep 40.1 P.A. 144.70 mag 8.58 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 20527+0720 (HD 198812) : ALADIN DSS IMAGE @ 20h 52m 42.97s +07° 19' 47.6"
 
 
 
 
WDS 20527+0720 STF 2733 (HD 198812) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20527+0720 STF2733 distance=0' 20539+0730 TDT2613 distance=21' 20516+0734 A 612 distance=22' 20516+0747 SKF1868 distance=32' 20552+0729 GWP3017 distance=38' 20543+0650 TDT2621 distance=38' 20546+0641 SLN 86 distance=48' 20554+0653 BRT2188 distance=49' 20560+0708 GWP3020 distance=50' 20556+0649 TDT2635 distance=53' 20533+0627 TDT2607 distance=54' 20562+0728 LDS4861 distance=54' 20501+0802 GWP3003 distance=58' 20487+0706 J 3223 distance=58' 20559+0646 NSN 739 distance=59' 20566+0659 TDT2649 distance=62' 20511+0623 STF2730 distance=62' 20539+0620 TDS1107 distance=63' 20540+0614 TDT2616 distance=69' 20504+0822 KPP4214 distance=72' 20550+0823 UC 4323 distance=73' 20537+0833 GWP3013 distance=75' 20504+0834 UC 4306 distance=82' 20554+0836 J 1318 distance=86' 20583+0654 KPP 481 distance=87' 20586+0723 J 1715 distance=88' 20559+0835 J 157 distance=88' 20468+0733 GAA 8 distance=89' 20533+0551 UC 4318 distance=90' 20580+0804 ARY 67 distance=90' 20560+0837 J 1346 distance=91' 20572+0823 UC 4341 distance=92' 20584+0757 ARY 68 distance=93' 20478+0818 UC 4291 distance=94' 20560+0840 TDT2638 distance=94' 20519+0544 A 613 distance=97' 20569+0842 RAO 443 distance=103' 20507+0859 TDT2574 distance=104' 20568+0844 CRB 13 distance=105' 20457+0709 BU 834 distance=106' 20544+0902 CVN 109 distance=106' 20468+0821 GWP2998 distance=108' 20478+0600 BU 65 distance=108' 20583+0831 ARY 87 distance=110' 21001+0731 KUI 102 distance=110' 20582+0835 TDT2664 distance=111' 20496+0538 GWP3002 distance=112' 20478+0555 TDT2543 distance=113' 20550+0907 TDT2628 distance=113' 20529+0529 GCB 60 distance=113' 20464+0618 TDT2533 distance=113' 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 20527+0720 STF2733 145 40.2
Show 20539+0730 TDT2613 69 0.6 21
Show 20516+0734 A 612 7 2.0 22
Show 20516+0747 SKF1868 313 57.7 32
Show 20552+0729 GWP3017 96 132.1 38
Show 20543+0650 TDT2621 4 1.7 38
Show 20546+0641 SLN 86 160 4.8 48
Show 20554+0653 BRT2188 46 4.2 49
Show 20560+0708 GWP3020 179 6.7 50
Show 20556+0649 TDT2635 259 0.8 53
Show 20533+0627 TDT2607 281 0.6 54
Show 20562+0728 LDS4861 90 2.0 54
Show 20501+0802 GWP3003 228 21.2 58
Show 20487+0706 J 3223 307 2.7 58
Show 20559+0646 NSN 739 52 8.8 59
Show 20566+0659 TDT2649 8 0.6 62
Show 20511+0623 STF2730 333 3.3 62
Show 20539+0620 TDS1107 110 1.6 63
Show 20540+0614 TDT2616 100 0.4 69
Show 20504+0822 KPP4214 86 4.3 72
Show 20550+0823 UC 4323 103 35.6 73
Show 20537+0833 GWP3013 15 7.0 75
Show 20504+0834 UC 4306 296 42.5 82
Show 20554+0836 J 1318 139 0.9 86
Show 20583+0654 KPP 481 233 3.8 87
Show 20586+0723 J 1715 125 5.2 88
Show 20559+0835 J 157 171 3.8 88
Show 20468+0733 GAA 8 1 0.0 89
Show 20533+0551 UC 4318 168 33.0 90
Show 20580+0804 ARY 67 1 152.9 90
Show 20560+0837 J 1346 327 2.4 91
Show 20572+0823 UC 4341 344 63.1 92
Show 20584+0757 ARY 68 339 112.4 93
Show 20478+0818 UC 4291 7 46.1 94
Show 20560+0840 TDT2638 97 2.2 94
Show 20519+0544 A 613 324 0.7 97
Show 20569+0842 RAO 443 297 0.2 103
Show 20507+0859 TDT2574 142 1.4 104
Show 20568+0844 CRB 13 177 131.6 105
Show 20457+0709 BU 834 134 2.4 106
Show 20544+0902 CVN 109 283 0.5 106
Show 20468+0821 GWP2998 50 104.9 108
Show 20478+0600 BU 65 200 1.5 108
Show 20583+0831 ARY 87 215 62.2 110
Show 21001+0731 KUI 102 191 0.2 110
Show 20582+0835 TDT2664 274 0.4 111
Show 20496+0538 GWP3002 247 57.2 112
Show 20478+0555 TDT2543 263 0.6 113
Show 20550+0907 TDT2628 64 0.5 113
Show 20529+0529 GCB 60 152 6.5 113
Show 20464+0618 TDT2533 230 0.7 113

 
 
WDS 20527+0720 : COMPONENTS
 
 
  A
B pa=144.7°
sep=40.10"
 
 
20527+0720 A
 
 
Componente originario normalizzato AB Name HD 198812 Coord arcsec 2000 205242.97+071947.6 Mag 8.39
Spectral class A (white) PmRA 44.00 PmDE -14.0 SAO 126322
Tycho2 0525-00124-1 HD 198812 GC 29121 DM BD+06 4674
Tycho2
Tycho2 0525-00124-1 Pflag RAmdeg 313.17906088 DEmdeg 7.32988252
PmRA 44.2 PmDE -13.1 E RAmdeg 5 E DEmdeg 7
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.44 EpDEm 1990.82
Num 12 Q RAmdeg 1.0 Q DEmdeg 0.9 Q pmRA 0.9
Q pmDE 0.9 BTmag 8.714 E BTmag 0.016 VTmag 8.393
E VTmag 0.013 Prox 400 TYC T HIP
CCDM RAdeg 313.17895861 DEdeg 7.32991361 EpRA 1990 1.73
EpDE 1990 1.40 E RAdeg 5.4 E DEdeg 6.7 Posflg
Corr -0.2
SAO
SAO 126322 DelFlag RA1950 PmRA1950 0.0031
DE1950 PmDE1950 -0.009 Vmag 8.5 SpType A0
Double code Source 70 CatNum 29121 DM BD+06 4674
DMcomp BDsup HD 198812 M HD 0
GC 29121 RA1950rad 5.45526434 DE1950rad 0.12462763 PmRA2000 0.0032
PmDE2000 -0.013
CCDM
Ccdm 20527+0720 RComp Comp A Note1
Note2 Discov num DRAs 0.90 DDEs -13.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.5 Sp A PmNote *
PmRA 29 PmDE -31 Dm number +06 4674 Cat1 BD
Name2 +07 3022 Cat2 AGK2/3 HD 198812 M HD
ADS BDS B10580 M ADS BDS N IDS IDS 20478N0658A
HIC
 
 
20527+0720 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205244.53+071914.9 Mag 8.58 PmRA 42.00
PmDE -15.0 SAO 126323 Tycho2 0525-00768-1 HD 198813
GC 29122 DM BD+06 4675 Calc delta mag 0.19 Calc coord yes
Tycho2
Tycho2 0525-00768-1 Pflag RAmdeg 313.18553922 DEmdeg 7.32081938
PmRA 39.7 PmDE -14.6 E RAmdeg 6 E DEmdeg 8
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.31 EpDEm 1990.67
Num 12 Q RAmdeg 0.7 Q DEmdeg 0.9 Q pmRA 0.6
Q pmDE 0.9 BTmag 8.983 E BTmag 0.017 VTmag 8.583
E VTmag 0.013 Prox 400 TYC T HIP
CCDM RAdeg 313.18544694 DEdeg 7.32085444 EpRA 1990 1.74
EpDE 1990 1.40 E RAdeg 6.1 E DEdeg 7.8 Posflg
Corr -0.2
SAO
SAO 126323 DelFlag RA1950 PmRA1950 0.0035
DE1950 PmDE1950 -0.011 Vmag 8.7 SpType F
Double code Source 70 CatNum 29122 DM BD+06 4675
DMcomp BDsup HD 198813 M HD 0
GC 29122 RA1950rad 5.45537956 DE1950rad 0.12446775 PmRA2000 0.0037
PmDE2000 -0.015
CCDM
Ccdm 20527+0720 RComp Comp B Note1
Note2 Discov num STF2733 DRAs 2.51 DDEs -45.6
R dRAs 10 Year 1832 Theta 145 Rho 40.2
Obs 6 Vmag 8.7 Sp F PmNote *
PmRA 34 PmDE -22 Dm number +06 4675 Cat1 BD
Name2 +07 3023 Cat2 AGK2/3 HD 198813 M HD
ADS BDS B10580 M ADS BDS N IDS IDS 20478N0658B
HIC