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Doubles in session


Current system
20531+2909
STT 417 AB,C


Nearby doubles
11' : 20531+2856
MLB 535

12' : 20529+2920
BOW9002AB

15' : 20522+2917
KU 129AB

18' : 20539+2856
GRV 392

32' : 20523+2839
BRT 52

41' : 20501+2923
BAG 28AB

43' : 20556+2845
BRT 53

46' : 20565+2910
MLB 485AB

51' : 20492+2911
TDT2561

56' : 20572+2921
J 794

56' : 20494+2840
CBL 86

56' : 20519+3002
TDT2587

59' : 20490+2932
BRT 51AB

60' : 20562+2826
GRV 397

62' : 20497+2825
MLB 534

62' : 20563+2954
J 1779

62' : 20489+2939
TDT2559

66' : 20537+2803
HJ 1589

67' : 20581+2917
HO 598

67' : 20551+2808
COU 831

67' : 20496+2819
GRV 385

67' : 20562+2816
MLB 615

67' : 20487+2943
TDT2556

69' : 20550+2805
BU 367AB

70' : 20493+2957
TDS1102

71' : 20579+2940
MLB 573AB



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.

20531+2909 STT 417 AB,C

 
 
20h 53m 04.23s +29° 08' 43.7" P.A. 108.00 sep 30.8 mag 8.24,10.50 Sp A0 dist. 204.92 pc (668.45 l.y.)
 
 
Coord 2000 20531+2909 Discov num STT 417 Comp AB,C Coord arcsec 2000 20 53 04.23 +29 08 43.7
Date first 1843 Date last 2014 Obs 27
Pa first 110 Pa last 108.1 P.A. Now (θ) 108.1°
Sep first 31.5 Sep last 30.797 Sep. Now (ρ) 30.797"
Mag pri 8.24 Mag sec 10.50 delta mag (ΔM) 2.26 Spectral class A0 (white)
Pri motion ra +012 Sec motion ra +016
Pri motion dec -005 Sec motion dec -002
Notes
rPM=0.31
Nature of this double is uncertain.
 
 
20531+2909 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 198977 89240 20 53 04 +29 08 44 STT 417 AB 2018 88 27 0.9 8.24 8.42 0.18
Show 89240 20 53 04 +29 08 44 STT 417 AB,C 2014 27 108 30.8 8.24 10.50 2.26 <===
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Vulpecula SAO 89240 HIP 103074 Tycho2 2183-00600-1
Gaia DR2 1858371777068435200 HD 198977 BD BD+28 3916 Distance 204.92
Distance ly 668.45
 
 
WDS 20531+2909 STT 417 AB,C : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
STTA (O. Struve DD - Appendix list) ...................
Stt1864 Ma - Struve, O. 1864MNRAS..24..149S
Stt1864 MNRAS 24, 149, 1864
Stt1866 orb - Struve, O. .
Stt1866 Bull. Imp. Acad. Sci. St. Petersburg, 1866
Stt1874 orb - Struve, O. .
Stt1874 Compte Rendus 79, 1467, 1874
Stt1875 orb - Struve, O. 1875MNRAS..35..367S
Stt1875 MNRAS 35, 367, 1875
Stt1878 Ma - Struve, O. 1878ObPul...9....1S
Stt1878 Pulkova Observations 9, 1, 1878
Stt1879A Ma - Struve, O. 1879Obs.....2..304G
Stt1879A cited by Gledhill (Obs 2, 304, 1879)
Stt1879B Ma - Struve, O. 1879Obs.....3..245G
Stt1879B cited by Gledhill (Obs 3, 245, 1879)
Stt1879C Ma - Struve, O. 1879Obs.....2..344G
Stt1879C cited by Gledhill (Obs 2, 344, 1879)
Stt1880A Ma - Struve, O. 1880Obs.....2..605H
Stt1880A cited by Hunt (Obs. 3, 605, 1880)
Stt1880B Ma - Struve, O. 1880Obs.....3..535G
Stt1880B cited by Gledhill (Obs 3, 535, 1880)
Stt1880C Ma - Struve, O. 1880MNRAS..40..497B
Stt1880C cited by Burnham (MNRAS 40, 497, 1880)
Stt1884A Ma - Struve, O. 1884AReg...22..216S
Stt1884A cited by Sadler (Astr. Register 22, 216, 1884)
Stt1893a Ma j Struve, O. 1893ObPul..10....1S
Stt1893a Pulkova Obs. Observations 10, 1, 1893
Stt1906A Ma - Struve, O. 1906MmRAS..56....1L
Stt1906A cited by Lewis (MemRAS 56, 1, 1906)
Stt1906B Ma j Struve, O. 1906QB821.B972.....
Stt1906B cited in BDS (Burnham Double Star Cat., 1906)
Stt1908A Ma - Struve, O. 1908MNRAS..68..465B
Stt1908A cited by Barnard (MNRAS 68, 465, 1908)
Stt1913A Ma - Struve, O. 1913QB811.B8.......
Stt1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Stt1914A Ma - Struve, O. 1914AN....198..107R
Stt1914A cited by Rabe (AN 198, 107, 1914)
Stt1932A Ma - Struve, O. 1932QB821.A43......
Stt1932A cited in ADS (Aitken Double Star Cat., 1932)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20531+2909 STT 417 AB,C 2009 23 108 30.6 8.24 10.50 D 205304.23+290843.7
20531+2909 STT 417 AB,C 2014 27 108 30.8 8.24 10.50 A0 205304.23+290843.7

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

 
 
WDS 20531+2909 STT 417 AB,C : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20531+2909 STT 417 AB,C : MEASURES
 
 
No records found.

 
 
WDS 20531+2909 : VIRTUAL EYEPIECE
 
 

20531+2909 STT 417A mag 8.24 Sp A0 20531+2909 STT 417B sep 0.9 P.A. 24.00 mag 8.42 20531+2909 STT 417C sep 27.3 P.A. 110.50 mag 10.5 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 20531+2909 : ALADIN DSS IMAGE @ 20h 53m 04.23s +29° 08' 43.7"
 
 
 
 
WDS 20531+2909 STT 417 AB,C : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20531+2909 STT 417AB,C distance=0' 20531+2856 MLB 535 distance=11' 20529+2920 BOW9002AB distance=12' 20529+2920 DAM 295AC distance=12' 20522+2917 KU 129AB distance=15' 20522+2917 KU 129AC distance=15' 20539+2856 GRV 392 distance=18' 20523+2839 BRT 52 distance=32' 20501+2923 BAG 28AB distance=41' 20501+2923 HLA 29AC distance=41' 20556+2845 BRT 53 distance=43' 20565+2910 MLB 485AB distance=46' 20492+2911 TDT2561 distance=51' 20572+2921 J 794 distance=56' 20494+2840 CBL 86 distance=56' 20519+3002 TDT2587 distance=56' 20490+2932 BRT 51AB distance=59' 20490+2932 BRT 51AC distance=59' 20490+2932 BRT 51BC distance=59' 20562+2826 GRV 397 distance=60' 20497+2825 MLB 534 distance=62' 20563+2954 J 1779 distance=62' 20489+2939 TDT2559 distance=62' 20537+2803 HJ 1589 distance=66' 20581+2917 HO 598 distance=67' 20551+2808 COU 831 distance=67' 20496+2819 GRV 385 distance=67' 20562+2816 MLB 615 distance=67' 20487+2943 TDT2556 distance=67' 20550+2805 BU 367AB distance=69' 20550+2805 A 3109AB,E distance=69' 20550+2805 BU 367AB,C distance=69' 20550+2805 BU 367AB,D distance=69' 20493+2957 TDS1102 distance=70' 20579+2940 MLB 573AB distance=71' 20579+2940 MLB 573AC distance=71' 20483+2832 GRV 382 distance=72' 20559+2804 MLB 614 distance=75' 20576+3003 J 2333AB distance=78' 20576+3003 DAM 669AC distance=78' 20535+2751 MLB 572 distance=79' 20578+3002 J 2334 distance=79' 20538+3029 J 3117 distance=80' 20590+2929 J 3119 distance=83' 20579+3002 TDT2662 distance=83' 20506+3024 STT 415 distance=83' 20555+3028 TDT2633 distance=86' 20483+3009 TDT2551 distance=87' 20523+3038 LDS6417 distance=90' 20576+2802 HJ 1599 distance=90' 20554+3033 GRV 396 distance=91' 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 20531+2909 STT 417 AB 27 0.9
Show 20531+2909 STT 417 AB,C 108 30.8
Show 20531+2856 MLB 535 2 7.1 11
Show 20529+2920 BOW9002 AB 354 9.9 12
Show 20529+2920 DAM 295 AC 37 22.2 12
Show 20522+2917 KU 129 AB 103 15.1 15
Show 20522+2917 KU 129 AC 39 46.1 15
Show 20539+2856 GRV 392 3 33.8 18
Show 20523+2839 BRT 52 87 8.8 32
Show 20501+2923 BAG 28 AB 332 1.0 41
Show 20501+2923 HLA 29 AC 336 6.9 41
Show 20556+2845 BRT 53 25 2.6 43
Show 20565+2910 MLB 485 AB 154 4.5 46
Show 20492+2911 TDT2561 5 3.5 51
Show 20572+2921 J 794 134 3.2 56
Show 20494+2840 CBL 86 317 53.7 56
Show 20519+3002 TDT2587 349 1.0 56
Show 20490+2932 BRT 51 AB 355 6.9 59
Show 20490+2932 BRT 51 AC 37 5.1 59
Show 20490+2932 BRT 51 BC 128 4.6 59
Show 20562+2826 GRV 397 339 58.2 60
Show 20497+2825 MLB 534 134 5.3 62
Show 20563+2954 J 1779 246 2.5 62
Show 20489+2939 TDT2559 176 0.5 62
Show 20537+2803 HJ 1589 325 11.3 66
Show 20581+2917 HO 598 125 16.2 67
Show 20551+2808 COU 831 289 1.3 67
Show 20496+2819 GRV 385 40 51.0 67
Show 20562+2816 MLB 615 200 3.6 67
Show 20487+2943 TDT2556 280 0.8 67
Show 20550+2805 BU 367 AB 224 0.1 69
Show 20550+2805 A 3109 AB,E 51 49.2 69
Show 20550+2805 BU 367 AB,C 358 38.0 69
Show 20550+2805 BU 367 AB,D 67 19.6 69
Show 20493+2957 TDS1102 19 1.1 70
Show 20579+2940 MLB 573 AB 57 5.7 71
Show 20579+2940 MLB 573 AC 232 23.7 71
Show 20483+2832 GRV 382 39 64.3 72
Show 20559+2804 MLB 614 75 8.7 75
Show 20576+3003 J 2333 AB 328 7.7 78
Show 20576+3003 DAM 669 AC 244 4.4 78
Show 20535+2751 MLB 572 298 1.7 79
Show 20578+3002 J 2334 16 5.1 79
Show 20538+3029 J 3117 40 5.5 80
Show 20590+2929 J 3119 140 8.4 83
Show 20579+3002 TDT2662 100 1.5 83
Show 20506+3024 STT 415 234 3.7 83
Show 20555+3028 TDT2633 116 1.4 86
Show 20483+3009 TDT2551 41 3.2 87
Show 20523+3038 LDS6417 295 228.9 90
Show 20576+2802 HJ 1599 225 13.5 90

 
 
WDS 20531+2909 : COMPONENTS
 
 
  A B
B pa=24.0°
sep=0.87"
 
C pa=110.5°
sep=27.30"
pa=112.4°
sep=27.26"
 
 
20531+2909 A
 
 
Name HD 198977 Coord arcsec 2000 205304.23+290843.7 Mag 8.24 Spectral class A0 (white)
PmRA 11.00 PmDE -2.0 SAO 89240 HIP 103074
Tycho2 2183-00600-1 HD 198977 BD BD+28 3916
Tycho2
Tycho2 2183-00600-1 Pflag P RAmdeg 313.26769954 DEmdeg 29.14555648
PmRA 11.0 PmDE -2.2 E RAmdeg 5 E DEmdeg 5
E pmRA 1.6 E pmDE 1.5 EpRAm 1991.56 EpDEm 1991.55
Num 6 Q RAmdeg 1.4 Q DEmdeg 0.6 Q pmRA 1.4
Q pmDE 0.7 BTmag 8.334 E BTmag 0.016 VTmag 8.235
E VTmag 0.012 Prox 9 TYC T HIP 103074
CCDM A RAdeg 313.26761389 DEdeg 29.14547361 EpRA 1990 1.70
EpDE 1990 1.72 E RAdeg 5.3 E DEdeg 5.1 Posflg D
Corr 0.1
SAO
SAO 89240 DelFlag RA1950 PmRA1950 0.0012
DE1950 PmDE1950 0.001 Vmag 7.7 SpType A0
Double code Source 34 CatNum 11870 DM BD+28 3916
DMcomp BDsup HD 198977 M HD 0
GC RA1950rad 5.45833806 DE1950rad 0.5053726 PmRA2000 0.0013
PmDE2000 -0.002
Hipparcos
Catalog H HIP 103074 Proxy H RAhms 20 53 04.23
DEdms +29 08 43.7 Vmag 7.58 VarFlag R Vmag H
RAdeg 313.268 DEdeg 29.1455 AstroRef A Plx 4.47
CCDM 20531+2909 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 28 Rho 0.882 HD 198977 BD BD+28 3916
CD CP Dm number +28 3916 VIred 0.08
SpType A0 R SpType Coord arcsec 2000 205304.23+290843.7
Hipparcos 2
HIP 103074 Sn 15 So 3 Nc 2
RArad 5.4675512717 DErad 0.508684418 Plx 4.88 PmRA 12.89
PmDE -2.75 E RArad 0.69 E DErad 0.81 E Plx 1.14
E pmRA 0.92 E pmDE 1.09 Hpmag 7.6111 E Hpmag 0.0013
SHp 0.014 VA 0 BV 0.069 E BV 0.015
VI 0.08
CCDM
Ccdm 20531+2909 RComp Comp A Note1
Note2 Discov num DRAs -1.69 DDEs -15.4
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.2 Sp A0 PmNote *
PmRA 30 PmDE 10 Dm number +28 3916 Cat1 BD
Name2 +28 2347 Cat2 AGK2/3 HD 198977 M HD
ADS BDS A14397 M ADS BDS N IDS IDS 20488N2846A
HIC 103074
 
 
20531+2909 B
 
 
Coord arcsec 2000 205304.26+290844.5 Mag 8.42 PmRA 11.00 PmDE -2.0
Tycho2 2183-00600-2 Calc delta mag 0.18 Calc coord yes
Tycho2
Tycho2 2183-00600-2 Pflag P RAmdeg 313.26769954 DEmdeg 29.14555648
PmRA 11.0 PmDE -2.2 E RAmdeg 5 E DEmdeg 5
E pmRA 1.6 E pmDE 1.5 EpRAm 1991.56 EpDEm 1991.55
Num 6 Q RAmdeg 1.4 Q DEmdeg 0.6 Q pmRA 1.4
Q pmDE 0.7 BTmag 8.520 E BTmag 0.016 VTmag 8.419
E VTmag 0.012 Prox 9 TYC T HIP 103074
CCDM B RAdeg 313.26774861 DEdeg 29.14568333 EpRA 1990 1.69
EpDE 1990 1.71 E RAdeg 5.8 E DEdeg 5.6 Posflg D
Corr 0.1
CCDM
Ccdm 20531+2909 RComp Comp B Note1
Note2 Discov num STT 417 DRAs DDEs
R dRAs Year 1959 Theta 029 Rho 0.8
Obs 99 Vmag 8.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14397 M ADS BDS N IDS IDS 20488N2846B
HIC 103074
 
 
20531+2909 C
 
 
Coord arcsec 2000 205306.18+290834.1 Mag 10.5 PmRA 16.00 PmDE -2.0
Calc delta mag 2.26 Calc coord yes
CCDM
Ccdm 20531+2909 RComp Comp C Note1
Note2 Discov num STT 417 DRAs 0.51 DDEs -24.9
R dRAs 10 Year 1847 Theta 109 Rho 30.9
Obs 7 Vmag 9.8 Sp PmNote *
PmRA 21 PmDE 13 Dm number Cat1
Name2 +28 2348 Cat2 AGK2/3 HD M HD
ADS BDS A14397 M ADS BDS N IDS IDS 20488N2846C
HIC