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Doubles in session


Current system
20106+3338
S 738 AB
HD 191812


Nearby doubles
9' : 20113+3338
COU1630

15' : 20105+3323
TOB 50

17' : 20099+3324
J 1163

18' : 20104+3356
COU1629

19' : 20091+3339
STF2638

19' : 20096+3325
HJ 1485

19' : 20120+3333
COU1631

21' : 20121+3330
BKO 898

23' : 20118+3321
TDT2075

26' : 20108+3320
SEI 952

28' : 20127+3330
FAL 67

33' : 20081+3329
TDT2010

34' : 20094+3309
GIC 162

34' : 20103+3412
TDT2045

35' : 20083+3318
LDT 17

39' : 20095+3301
GRV 316

44' : 20132+3309
SKF1649

44' : 20116+3420
TDT2069

46' : 20090+3258
SEI 916

46' : 20131+3411
STTA203

49' : 20130+3416
LDS1035

49' : 20068+3329
ES 2352AB

54' : 20120+3429
A 282AB

55' : 20117+3431
CRB 133

56' : 20095+3431
TOB 172

56' : 20094+3244
SEI 925



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.

20106+3338 S 738 AB (HD 191812)

 
 
20h 10m 35.13s +33° 38' 02.7" P.A. 106.00 sep 42.4 mag 7.76,8.43 Sp B9V dist. 301.2 pc (982.51 l.y.)
 
 
Coord 2000 20106+3338 Discov num S   738 Comp AB Coord arcsec 2000 20 10 35.13 +33 38 02.7
Date first 1797 Date last 2021 Obs 44
Pa first 109 Pa last 106.2 P.A. Now (θ) 106.2°
Sep first 35.6 Sep last 42.37 Sep. Now (ρ) 42.37"
Mag pri 7.76 Mag sec 8.43 delta mag (ΔM) 0.67 Spectral class B9V (blue-white)
Pri motion ra -011 Sec motion ra +001
Pri motion dec -017 Sec motion dec +001
Notes N Z (See Notes, Parallax indicates components are physical)
rPM=1.068
This double is physical.
 
 
20106+3338 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 191812 69553 20 10 35 +33 38 03 S 738 AB 2021 44 106 42.4 7.76 8.43 0.67 <===
Show 69554 20 10 38 +33 37 51 STT 541 BC 2021 26 184 1.8 8.43 9.73 1.30
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 191812 Constellation Cygnus SAO 69553 HIP 99409
Tycho2 2675-03113-1 Gaia DR2 2055252734321284736 HD 191812 GC 28006
BD BD+33 3778 Distance 301.2 Distance ly 982.51
 
 
WDS 20106+3338 S 738 AB (HD 191812) : NOTES
 
 
discov_num notes refcode
S 738 B is BD+33@3780.
 
 
REFERENCES
 
 
refcode metd author reference
S__1826 Ma - South, J. 1826RSPT..116....1S
S__1826 Phil. Trans. R. Soc., 116, Pt.1, 1826
S__1844A Ma - South, J. 1844QB43.S66.......
S__1844A cited by Smyth (Cycle of Celestial Objects 2, 1844)
S__1852A Ma - South, J. .
S__1852A cited by Bishop (Bishop Obs. Astron. Observations 1852)
S__1880A Ma - South, J. 1880MNRAS..40..497B
S__1880A cited by Burnham (MNRAS 40, 497, 1880)
S__1906A Ma - South, J. 1906MmRAS..56....1L
S__1906A cited by Lewis (MemRAS 56, 1, 1906)
S__1906B Ma - South, J. 1906QB821.B972.....
S__1906B cited in BDS (Burnham Double Star Cat., 1906)
S__1913A Ma - South, J. 1913QB811.B8.......
S__1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
S__1922A Ma - South, J. 1922AN....216...49R
S__1922A cited by Rabe (AN 216, 49, 1922)
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
20106+3338 S 738 AB 1998 36 106 42.1 7.76 8.43 B9V NZD 201035.13+333802.7
20106+3338 S 738 AB 2008 37 106 42.0 7.76 8.43 B9V NZD 201035.13+333802.7
20106+3338 S 738 AB 2012 39 104 41.8 7.76 8.43 B9V NZD 201035.13+333802.7
20106+3338 S 738 AB 2017 41 106 42.4 7.76 8.43 B9V NZ 201035.13+333802.7
20106+3338 S 738 AB 2019 43 106 42.6 7.76 8.43 B9V NZ 201035.13+333802.7
20106+3338 S 738 AB 2021 44 106 42.4 7.76 8.43 B9V NZ 201035.13+333802.7

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

 
 
WDS 20106+3338 S 738 AB (HD 191812) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 22/09/16 daedalus1 mean difficulty separated 106   Seeing: Pickering 4, poor. Measure: theta 106, rho 42.3 +/-0.075. Very nice pair. B has a very tight companion of its own, very nice to look at.

 
 
WDS 20106+3338 S 738 AB (HD 191812) : MEASURES
 
 
No records found.

 
 
WDS 20106+3338 (HD 191812) : VIRTUAL EYEPIECE
 
 

20106+3338 S 738A mag 7.76 Sp B9V 20106+3338 STT 541B sep 41.9 P.A. 106.70 mag 8.43 Sp B8V 20106+3338 STT 541C sep 42.3 P.A. 109.00 mag 9.73 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 20106+3338 (HD 191812) : ALADIN DSS IMAGE @ 20h 10m 35.13s +33° 38' 02.7"
 
 
 
 
WDS 20106+3338 S 738 AB (HD 191812) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20106+3338 S 738AB distance=0' 20106+3338 STT 541BC distance=1' 20113+3338 COU1630 distance=9' 20105+3323 TOB 50 distance=15' 20099+3324 J 1163 distance=17' 20104+3356 COU1629 distance=18' 20091+3339 STF2638 distance=19' 20096+3325 HJ 1485 distance=19' 20120+3333 COU1631 distance=19' 20121+3330 BKO 898 distance=21' 20118+3321 TDT2075 distance=23' 20108+3320 SEI 952 distance=26' 20127+3330 FAL 67 distance=28' 20081+3329 TDT2010 distance=33' 20094+3309 GIC 162 distance=34' 20103+3412 TDT2045 distance=34' 20083+3318 LDT 17 distance=35' 20095+3301 GRV 316 distance=39' 20132+3309 SKF1649 distance=44' 20116+3420 TDT2069 distance=44' 20090+3258 SEI 916 distance=46' 20131+3411 STTA203 distance=46' 20068+3329 ES 2352BC distance=49' 20130+3416 LDS1035 distance=49' 20068+3329 ES 2352AB distance=49' 20120+3429 A 282AB distance=54' 20120+3429 HO 121AB,C distance=54' 20120+3429 HO 121AB,D distance=54' 20117+3431 CRB 133 distance=55' 20095+3431 TOB 172 distance=56' 20094+3244 SEI 925 distance=56' 20062+3328 ES 2373AB distance=57' 20062+3328 ES 2373AC distance=57' 20092+3243 TOB 171 distance=58' 20134+3253 SHN 242 distance=59' 20129+3429 AG 250 distance=59' 20097+3240 SEI 933 distance=59' 20120+3436 HO 120AB distance=61' 20120+3436 HO 120AC distance=61' 20154+3344 A 283 distance=61' 20129+3432 TDT2093 distance=62' 20057+3329 ES 2351 distance=62' 20065+3302 GYL 23 distance=62' 20079+3246 TDT2007 distance=63' 20153+3316 COU1808 distance=64' 20081+3241 SEI 906 distance=65' 20128+3439 TDT2091 distance=67' 20053+3343 SEI 844 distance=67' 20061+3417 GYL 88 distance=69' 20077+3240 TOB 168 distance=69' 20153+3412 DAM 205 distance=69' 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 20106+3338 S 738 AB 106 42.4
Show 20106+3338 STT 541 BC 184 1.8 1
Show 20113+3338 COU1630 66 0.1 9
Show 20105+3323 TOB 50 269 31.9 15
Show 20099+3324 J 1163 281 2.4 17
Show 20104+3356 COU1629 155 1.5 18
Show 20091+3339 STF2638 69 14.0 19
Show 20096+3325 HJ 1485 276 4.7 19
Show 20120+3333 COU1631 329 0.4 19
Show 20121+3330 BKO 898 65 4.7 21
Show 20118+3321 TDT2075 104 2.6 23
Show 20108+3320 SEI 952 194 5.9 26
Show 20127+3330 FAL 67 165 21.3 28
Show 20081+3329 TDT2010 55 0.9 33
Show 20094+3309 GIC 162 180 35.2 34
Show 20103+3412 TDT2045 131 0.8 34
Show 20083+3318 LDT 17 238 0.4 35
Show 20095+3301 GRV 316 36 27.8 39
Show 20132+3309 SKF1649 252 20.3 44
Show 20116+3420 TDT2069 317 0.5 44
Show 20090+3258 SEI 916 29 5.4 46
Show 20131+3411 STTA203 37 88.4 46
Show 20068+3329 ES 2352 BC 248 4.3 49
Show 20130+3416 LDS1035 193 17.3 49
Show 20068+3329 ES 2352 AB 52 32.4 49
Show 20120+3429 A 282 AB 207 0.3 54
Show 20120+3429 HO 121 AB,C 12 24.5 54
Show 20120+3429 HO 121 AB,D 11 42.0 54
Show 20117+3431 CRB 133 113 10.7 55
Show 20095+3431 TOB 172 108 8.5 56
Show 20094+3244 SEI 925 338 22.9 56
Show 20062+3328 ES 2373 AB 104 6.1 57
Show 20062+3328 ES 2373 AC 53 12.6 57
Show 20092+3243 TOB 171 117 19.1 58
Show 20134+3253 SHN 242 -1 0.2 59
Show 20129+3429 AG 250 53 8.9 59
Show 20097+3240 SEI 933 335 4.5 59
Show 20120+3436 HO 120 AB 111 1.2 61
Show 20120+3436 HO 120 AC 200 24.2 61
Show 20154+3344 A 283 287 3.5 61
Show 20129+3432 TDT2093 20 0.4 62
Show 20057+3329 ES 2351 276 5.0 62
Show 20065+3302 GYL 23 180 13.3 62
Show 20079+3246 TDT2007 134 2.4 63
Show 20153+3316 COU1808 209 1.1 64
Show 20081+3241 SEI 906 283 23.8 65
Show 20128+3439 TDT2091 24 1.0 67
Show 20053+3343 SEI 844 6 22.5 67
Show 20061+3417 GYL 88 152 9.9 69
Show 20077+3240 TOB 168 292 18.3 69
Show 20153+3412 DAM 205 359 8.6 69

 
 
WDS 20106+3338 : COMPONENTS
 
 
  A B
B pa=106.7°
sep=41.85"
 
C pa=109.0°
sep=42.28"
pa=183.6°
sep=1.75"
 
 
20106+3338 A
 
 
Name HD 191812 Coord arcsec 2000 201035.13+333802.7 Mag 7.76 Spectral class B9V (blue-white)
PmRA -11.00 PmDE -17.0 SAO 69553 HIP 99409
Tycho2 2675-03113-1 HD 191812 GC 28006 BD BD+33 3778
Tycho2
Tycho2 2675-03113-1 Pflag RAmdeg 302.64633305 DEmdeg 33.63404077
PmRA -10.5 PmDE -19.9 E RAmdeg 5 E DEmdeg 4
E pmRA 1.5 E pmDE 1.4 EpRAm 1991.23 EpDEm 1991.55
Num 8 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 0.9
Q pmDE 1.4 BTmag 7.860 E BTmag 0.015 VTmag 7.764
E VTmag 0.011 Prox 419 TYC T HIP 99409
CCDM RAdeg 302.64636278 DEdeg 33.63408639 EpRA 1990 1.49
EpDE 1990 1.72 E RAdeg 5.0 E DEdeg 4.4 Posflg
Corr 0.0
SAO
SAO 69553 DelFlag RA1950 PmRA1950 -0.001
DE1950 PmDE1950 -0.008 Vmag 8.6 SpType A0
Double code Source 70 CatNum 28006 DM BD+33 3778
DMcomp BDsup HD 191812 M HD 0
GC 28006 RA1950rad 5.27371389 DE1950rad 0.58442706 PmRA2000 -0.0008
PmDE2000 -0.01
Hipparcos
Catalog H HIP 99409 Proxy RAhms 20 10 35.13
DEdms +33 38 02.7 Vmag 7.71 VarFlag R Vmag G
RAdeg 302.646 DEdeg 33.6341 AstroRef Plx 3.68
CCDM 20106+3338 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 191812 BD BD+33 3778
CD CP Dm number +33 3778 VIred 0.06
SpType B9V R SpType Coord arcsec 2000 201035.13+333802.7
Hipparcos 2
HIP 99409 Sn 5 So 0 Nc 1
RArad 5.2821755545 DErad 0.5870256021 Plx 3.32 PmRA -9.68
PmDE -17.09 E RArad 0.45 E DErad 0.54 E Plx 0.75
E pmRA 0.52 E pmDE 0.62 Hpmag 7.792 E Hpmag 0.0015
SHp 0.016 VA 0 BV 0.075 E BV 0.009
VI 0.06
CCDM
Ccdm 20106+3338 RComp Comp A Note1
Note2 Discov num DRAs -0.82 DDEs 3.9
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.6 Sp A0 PmNote *
PmRA 3 PmDE 4 Dm number +33 3778 Cat1 BD
Name2 +33 1903 Cat2 AGK2/3 HD 191812 M HD
ADS BDS A13463 M ADS BDS N IDS IDS 20067N3320A
HIC 99409
 
 
20106+3338 B
 
 
Coord arcsec 2000 201038.34+333750.7 Coord calc 201038.34+333750.7 Mag 8.43 Spectral class B8V (blue-white)
PmRA -3.00 PmDE 0.0 SAO 69554 HIP 99416
Tycho2 2675-03000-1 HD 191813 GC 28007 BD BD+33 3780
Calc delta mag 0.67
Tycho2
Tycho2 2675-03000-1 Pflag P RAmdeg 302.65974580 DEmdeg 33.63069105
PmRA -2.7 PmDE 0.3 E RAmdeg 6 E DEmdeg 5
E pmRA 2.0 E pmDE 1.8 EpRAm 1991.33 EpDEm 1991.62
Num 6 Q RAmdeg 2.0 Q DEmdeg 1.2 Q pmRA 2.0
Q pmDE 1.2 BTmag 8.403 E BTmag 0.016 VTmag 8.428
E VTmag 0.013 Prox 18 TYC T HIP 99416
CCDM B RAdeg 302.65975944 DEdeg 33.63075056 EpRA 1990 1.48
EpDE 1990 1.74 E RAdeg 6.4 E DEdeg 5.2 Posflg D
Corr 0.0
SAO
SAO 69554 DelFlag RA1950 PmRA1950 0.0006
DE1950 PmDE1950 -0.012 Vmag 8.6 SpType A0
Double code Source 70 CatNum 28007 DM BD+33 3780
DMcomp BDsup HD 191813 M HD 0
GC 28007 RA1950rad 5.27394762 DE1950rad 0.58435965 PmRA2000 0.0008
PmDE2000 -0.014
Hipparcos
Catalog H HIP 99416 Proxy H RAhms 20 10 38.34
DEdms +33 37 50.7 Vmag 8.19 VarFlag R Vmag H
RAdeg 302.66 DEdeg 33.6308 AstroRef B Plx 2.83
CCDM 20106+3338 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP BC
Theta 184 Rho 1.769 HD 191813 BD BD+33 3780
CD CP Dm number +33 3780 VIred 0.01
SpType B9V R SpType Coord arcsec 2000 201038.34+333750.7
Hipparcos 2
HIP 99416 Sn 15 So 3 Nc 2
RArad 5.2824092653 DErad 0.5869673869 Plx 2.25 PmRA -0.17
PmDE -1.47 E RArad 0.6 E DErad 0.82 E Plx 0.99
E pmRA 0.71 E pmDE 0.91 Hpmag 8.1927 E Hpmag 0.0016
SHp 0.017 VA 0 BV -0.007 E BV 0.009
VI 0.01
CCDM
Ccdm 20106+3338 RComp Comp B Note1
Note2 Discov num S 738 DRAs 2.36 DDEs -9.0
R dRAs 10 Year 1934 Theta 108 Rho 41.2
Obs 11 Vmag 8.7 Sp A0 PmNote *
PmRA 6 PmDE 10 Dm number +33 3780 Cat1 BD
Name2 +33 1904 Cat2 AGK2/3 HD 191813 M HD
ADS BDS A13463 M ADS BDS N IDS IDS 20067N3320B
HIC 99416
 
 
20106+3338 C
 
 
Coord arcsec 2000 201038.33+333749.0 Mag 9.73 PmRA -3.00 PmDE 0.0
Tycho2 2675-03000-2 Calc delta mag 1.97 Calc coord yes
Tycho2
Tycho2 2675-03000-2 Pflag P RAmdeg 302.65974580 DEmdeg 33.63069105
PmRA -2.7 PmDE 0.3 E RAmdeg 6 E DEmdeg 5
E pmRA 2.0 E pmDE 1.8 EpRAm 1991.33 EpDEm 1991.62
Num 6 Q RAmdeg 2.0 Q DEmdeg 1.2 Q pmRA 2.0
Q pmDE 1.2 BTmag 9.946 E BTmag 0.025 VTmag 9.730
E VTmag 0.026 Prox 18 TYC T HIP 99416
CCDM C RAdeg 302.65971222 DEdeg 33.63025222 EpRA 1990 1.46
EpDE 1990 1.77 E RAdeg 17.6 E DEdeg 13.0 Posflg D
Corr 0.0
CCDM
Ccdm 20106+3338 RComp B Comp C Note1
Note2 Discov num STT 541 DRAs DDEs
R dRAs Year 1935 Theta 185 Rho 1.8
Obs 10 Vmag 10.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13463 M ADS BDS N IDS IDS 20067N3320C
HIC 99416