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Doubles in session


Current system
21172+3936
SEI 1490 AB


Nearby doubles
10' : 21176+3945
STF2785

13' : 21181+3929
MLB 895

15' : 21175+3950
SEI1493

15' : 21184+3930
SEI1496

16' : 21184+3943
SEI1497

18' : 21175+3919
MLB 959

23' : 21190+3945
STT 434AB

24' : 21191+3944
SEI1501

25' : 21165+3959
SEI1484

26' : 21171+4001
A 1441AB

26' : 21171+4002
GRV 443

29' : 21180+4003
LDS2506

29' : 21191+3954
SEI1502

31' : 21196+3948
SEI1503AB

31' : 21169+3906
SEI1486

32' : 21154+3912
MLB 894

34' : 21146+3947
LDS2500

34' : 21169+4009
COU1972

34' : 21189+3909
AG 270

34' : 21199+3948
SEI1507

37' : 21190+3905
SEI1498AB

38' : 21199+3957
SEI1506

41' : 21154+3902
SEI1477

41' : 21169+3855
MLB1020

43' : 21163+3856
TDT2875

44' : 21168+4019
TOB 219



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

21172+3936 SEI 1490 AB

 
 
21h 17m 12.97s +39° 36' 27.4" P.A. 95.00 sep 20.1 mag 11.42,12.44
 
 
Coord 2000 21172+3936 Discov num SEI1490 Comp AB Coord arcsec 2000 21 17 12.97 +39 36 27.4
Date first 1895 Date last 2015 Obs 9
Pa first 110 Pa last 95 P.A. Now (θ) 95°
Sep first 22.7 Sep last 20.071 Sep. Now (ρ) 20.071"
Mag pri 11.42 Mag sec 12.44 delta mag (ΔM) 1.02 Spectral class
Pri motion ra +021 Sec motion ra +012
Pri motion dec -050 Sec motion dec +001
Notes
rPM=0.955
This double is not physical.
 
 
21172+3936 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 17 13 +39 36 27 SEI 1490 AB 2015 9 95 20.1 11.42 12.44 1.02 <===
Show 21 17 15 +39 36 25 LDS 2504 BC 2015 5 67 23.5 12.44 19.50 7.06
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3173-00080-1 Gaia DR2 1965225718670244608
 
 
WDS 21172+3936 SEI 1490 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
LDS Luyten p.m. catalog (from additional DD list) ...................
Sei1908 Pa - Scheiner, J. 1908POPot..59.....S
Sei1908 +Po Pub. Obs. Potsdam 20, #59, 1908
Sei1913A Pa - Scheiner, J. 1913QB811.B8.......
Sei1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Sei1932A Pa - Scheiner, J. 1932QB821.A43......
Sei1932A 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
21172+3936 SEI1490 AB 1998 4 97 20.3 11.64 12.20 D 211712.97+393627.4
21172+3936 SEI1490 AB 2002 5 97 20.3 11.64 12.20 D 211712.97+393627.4
21172+3936 SEI1490 AB 2015 6 95 20.1 11.42 12.44 211712.97+393627.4

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

 
 
WDS 21172+3936 SEI 1490 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21172+3936 SEI 1490 AB : MEASURES
 
 
No records found.

 
 
WDS 21172+3936 : VIRTUAL EYEPIECE
 
 

21172+3936 SEI1490A mag 11.42 21172+3936 LDS2504B sep 20.2 P.A. 96.80 mag 12.44 21172+3936 LDS2504C sep 37.4 P.A. 79.20 mag 19.5 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 21172+3936 : ALADIN DSS IMAGE @ 21h 17m 12.97s +39° 36' 27.4"
 
 
 
 
WDS 21172+3936 SEI 1490 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21172+3936 SEI1490AB distance=0' 21172+3936 LDS2504BC distance=1' 21176+3945 STF2785 distance=10' 21181+3929 MLB 895 distance=13' 21175+3950 SEI1493 distance=15' 21184+3930 SEI1496 distance=15' 21184+3943 SEI1497 distance=16' 21175+3919 MLB 959 distance=18' 21190+3945 STT 434AB distance=23' 21190+3945 ARY 5AC distance=23' 21191+3944 SEI1501 distance=24' 21165+3959 SEI1484 distance=25' 21171+4001 A 1441AB distance=26' 21171+4001 SEI1489AC distance=26' 21171+4002 GRV 443 distance=26' 21180+4003 LDS2506 distance=29' 21191+3954 SEI1502 distance=29' 21196+3948 SEI1503AB distance=31' 21196+3948 SEI1504AC distance=31' 21196+3948 ABH 143AD distance=31' 21196+3948 ABH 143AE distance=31' 21196+3948 ABH 143AF distance=31' 21196+3948 ABH 143AG distance=31' 21196+3948 ABH 143AH distance=31' 21196+3948 ABH 143AI distance=31' 21169+3906 SEI1486 distance=31' 21154+3912 MLB 894 distance=32' 21146+3947 LDS2500 distance=34' 21169+4009 COU1972 distance=34' 21189+3909 AG 270 distance=34' 21199+3948 SEI1507 distance=34' 21190+3905 SEI1498AB distance=37' 21190+3905 TOB 220BC distance=37' 21199+3957 SEI1506 distance=38' 21154+3902 SEI1477 distance=41' 21169+3855 MLB1020 distance=41' 21163+3856 TDT2875 distance=43' 21168+4019 TOB 219 distance=44' 21181+3854 SEI1494 distance=44' 21174+4020 SEI1492 distance=44' 21170+4020 SEI1487 distance=44' 21148+3901 ALI 966 distance=45' 21153+4017 A 1440 distance=46' 21182+3850 ES 1993 distance=48' 21176+4023 LDS2505 distance=48' 21209+4002 LDS2512 distance=50' 21200+3854 SEI1505 distance=53' 21212+4003 COU2230 distance=54' 21209+4010 UC 259AB distance=54' 21204+4017 RAO 451 distance=55' 21192+4026 LDS2508AB distance=55' 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 21172+3936 SEI1490 AB 95 20.1
Show 21172+3936 LDS2504 BC 67 23.5 1
Show 21176+3945 STF2785 234 2.9 10
Show 21181+3929 MLB 895 182 5.7 13
Show 21175+3950 SEI1493 142 24.1 15
Show 21184+3930 SEI1496 352 19.5 15
Show 21184+3943 SEI1497 213 10.0 16
Show 21175+3919 MLB 959 291 7.8 18
Show 21190+3945 STT 434 AB 122 24.4 23
Show 21190+3945 ARY 5 AC 317 97.2 23
Show 21191+3944 SEI1501 240 29.7 24
Show 21165+3959 SEI1484 7 4.2 25
Show 21171+4001 A 1441 AB 273 0.2 26
Show 21171+4001 SEI1489 AC 102 16.4 26
Show 21171+4002 GRV 443 333 16.6 26
Show 21180+4003 LDS2506 161 14.1 29
Show 21191+3954 SEI1502 274 13.1 29
Show 21196+3948 SEI1503 AB 278 9.7 31
Show 21196+3948 SEI1504 AC 66 22.5 31
Show 21196+3948 ABH 143 AD 119 104.7 31
Show 21196+3948 ABH 143 AE 161 54.4 31
Show 21196+3948 ABH 143 AF 229 50.9 31
Show 21196+3948 ABH 143 AG 45 111.9 31
Show 21196+3948 ABH 143 AH 66 86.5 31
Show 21196+3948 ABH 143 AI 74 124.3 31
Show 21169+3906 SEI1486 318 23.9 31
Show 21154+3912 MLB 894 200 3.1 32
Show 21146+3947 LDS2500 355 14.5 34
Show 21169+4009 COU1972 145 0.2 34
Show 21189+3909 AG 270 112 5.8 34
Show 21199+3948 SEI1507 146 11.6 34
Show 21190+3905 SEI1498 AB 89 28.9 37
Show 21190+3905 TOB 220 BC 75 12.5 37
Show 21199+3957 SEI1506 60 7.8 38
Show 21154+3902 SEI1477 59 20.8 41
Show 21169+3855 MLB1020 159 4.6 41
Show 21163+3856 TDT2875 144 1.8 43
Show 21168+4019 TOB 219 212 35.0 44
Show 21181+3854 SEI1494 357 24.5 44
Show 21174+4020 SEI1492 246 24.6 44
Show 21170+4020 SEI1487 238 21.2 44
Show 21148+3901 ALI 966 99 6.6 45
Show 21153+4017 A 1440 213 1.2 46
Show 21182+3850 ES 1993 264 9.4 48
Show 21176+4023 LDS2505 23 4.3 48
Show 21209+4002 LDS2512 30 85.1 50
Show 21200+3854 SEI1505 341 10.8 53
Show 21212+4003 COU2230 81 0.4 54
Show 21209+4010 UC 259 AB 110 55.0 54
Show 21204+4017 RAO 451 116 2.8 55
Show 21192+4026 LDS2508 AB 357 7.8 55

 
 
WDS 21172+3936 : COMPONENTS
 
 
  A B
B pa=96.8°
sep=20.25"
 
C pa=79.2°
sep=37.39"
pa=60.6°
sep=19.08"
 
 
21172+3936 A
 
 
Coord arcsec 2000 211712.97+393627.4 Mag 11.42 PmRA 21.00 PmDE -50.0
Tycho2 3173-00080-1
Tycho2
Tycho2 3173-00080-1 Pflag RAmdeg 319.30409051 DEmdeg 39.60766660
PmRA 25.0 PmDE -47.3 E RAmdeg 42 E DEmdeg 41
E pmRA 2.9 E pmDE 2.7 EpRAm 1982.63 EpDEm 1982.60
Num 4 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.1
Q pmDE 1.3 BTmag 12.748 E BTmag 0.213 VTmag 11.638
E VTmag 0.110 Prox 999 TYC HIP
CCDM RAdeg 319.30397194 DEdeg 39.60773139 EpRA 1990 1.63
EpDE 1990 1.72 E RAdeg 123.7 E DEdeg 107.3 Posflg
Corr 0.1
CCDM
Ccdm 21172+3936 RComp Comp A Note1
Note2 Discov num DRAs 0.94 DDEs 29.4
R dRAs 65 Year Theta Rho
Obs 2 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21133N3911A
HIC
 
 
21172+3936 B
 
 
Coord arcsec 2000 211714.71+393625.0 Coord calc 211714.71+393625.0 Mag 12.44 PmRA 10.00
PmDE 2.0 Calc delta mag 1.02
CCDM
Ccdm 21172+3936 RComp Comp B Note1
Note2 Discov num SEI1490 DRAs 2.73 DDEs 23.6
R dRAs 65 Year 1895 Theta 110 Rho 22.6
Obs 1 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21133N3911B
HIC
 
 
21172+3936 C
 
 
Coord arcsec 2000 211716.15+393634.4 Mag 19.5 PmRA -2.00 PmDE 12.0
Calc delta mag 8.08 Calc coord yes