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Current system
21120+4000
TDT 2817


Nearby doubles
11' : 21129+4003
LDS2495

18' : 21105+4000
ALI1155

25' : 21098+4001
GRV 430AB

28' : 21099+4013
COU1968

30' : 21118+3931
ES 1992

32' : 21146+3947
LDS2500

35' : 21109+4034
ES 255

36' : 21129+4033
ES 256

37' : 21112+3925
COU1969

42' : 21102+3923
ALI 963

42' : 21153+4017
A 1440

43' : 21110+3919
MLB 891

44' : 21086+3942
ALI1154

44' : 21111+3918
MLB 892

46' : 21126+3915
MLB 893

47' : 21145+4036
COU2227

49' : 21139+4042
TDT2840

53' : 21165+3959
SEI1484

54' : 21072+3958
ES 1990AB

55' : 21128+3907
SEI1447

56' : 21108+3906
GUR 4

57' : 21140+4051
KPP1300

58' : 21132+3904
TDT2833AB

59' : 21168+4019
TOB 219

59' : 21169+4009
COU1972

59' : 21171+4001
A 1441AB



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21120+4000 TDT 2817

 
 
21h 11m 57.66s +39° 59' 47.3" P.A. 335.00 sep 0.6 mag 11.34,11.73
 
 
Coord 2000 21120+4000 Discov num TDT2817 Comp Coord arcsec 2000 21 11 57.66 +39 59 47.3
Date first 1991 Date last 1991 Obs 1
Pa first 335 Pa last 335.3 P.A. Now (θ) 335.3°
Sep first 0.6 Sep last 0.64 Sep. Now (ρ) 0.64"
Mag pri 11.34 Mag sec 11.73 delta mag (ΔM) 0.39 Spectral class
Pri motion ra +000 Sec motion ra +000
Pri motion dec +030 Sec motion dec +030
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3173-02198-1 Gaia DR2 1968196049333173760
 
 
WDS 21120+4000 TDT 2817 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
No records found.

 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21120+4000 TDT2817 1991 1 335 0.6 11.34 11.73 211157.66+395947.3

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

 
 
WDS 21120+4000 TDT 2817 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21120+4000 TDT 2817 : MEASURES
 
 
No records found.

 
 
WDS 21120+4000 : VIRTUAL EYEPIECE
 
 

21120+4000 TDT2817A mag 11.34 21120+4000 TDT2817B sep 0.6 P.A. 340.60 mag 11.73 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 21120+4000 : ALADIN DSS IMAGE @ 21h 11m 57.66s +39° 59' 47.3"
 
 
 
 
WDS 21120+4000 TDT 2817 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21120+4000 TDT2817 distance=0' 21129+4003 LDS2495 distance=11' 21105+4000 ALI1155 distance=18' 21098+4001 GRV 430AB distance=25' 21098+4001 GRV 429AC distance=25' 21099+4013 COU1968 distance=28' 21118+3931 ES 1992 distance=30' 21146+3947 LDS2500 distance=32' 21109+4034 ES 255 distance=35' 21129+4033 ES 256 distance=36' 21112+3925 COU1969 distance=37' 21102+3923 ALI 963 distance=42' 21153+4017 A 1440 distance=42' 21110+3919 MLB 891 distance=43' 21086+3942 ALI1154 distance=44' 21111+3918 MLB 892 distance=44' 21126+3915 MLB 893 distance=46' 21145+4036 COU2227 distance=47' 21139+4042 TDT2840 distance=49' 21165+3959 SEI1484 distance=53' 21072+3958 TDT2765Aa,Ab distance=54' 21072+3958 ES 1990AB distance=54' 21128+3907 SEI1447 distance=55' 21128+3907 GUR 13Aa,Ab distance=55' 21108+3906 GUR 4 distance=56' 21140+4051 KPP1300 distance=57' 21132+3904 TDT2833AB distance=58' 21132+3904 GUR 16AC distance=58' 21168+4019 TOB 219 distance=59' 21169+4009 COU1972 distance=59' 21171+4001 A 1441AB distance=59' 21171+4001 SEI1489AC distance=59' 21171+4002 GRV 443 distance=60' 21170+4020 SEI1487 distance=62' 21094+3905 GUR 1 distance=63' 21110+3859 GUR 5 distance=63' 21154+3912 MLB 894 distance=63' 21068+4021 ES 1989 distance=63' 21130+3858 ES 257 distance=64' 21172+3936 SEI1490AB distance=65' 21112+3855 ES 1991 distance=65' 21174+4020 SEI1492 distance=65' 21175+3950 SEI1493 distance=65' 21172+3936 LDS2504BC distance=66' 21176+3945 STF2785 distance=67' 21130+3854 GUR 15 distance=68' 21061+4001 COU2224 distance=68' 21148+3901 ALI 966 distance=68' 21176+4023 LDS2505 distance=69' 21097+3856 COU1967 distance=69' 21180+4003 LDS2506 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 21120+4000 TDT2817 335 0.6
Show 21129+4003 LDS2495 173 5.0 11
Show 21105+4000 ALI1155 305 13.4 18
Show 21098+4001 GRV 430 AB 351 47.1 25
Show 21098+4001 GRV 429 AC 168 48.5 25
Show 21099+4013 COU1968 104 0.2 28
Show 21118+3931 ES 1992 203 3.1 30
Show 21146+3947 LDS2500 355 14.5 32
Show 21109+4034 ES 255 34 4.6 35
Show 21129+4033 ES 256 281 4.5 36
Show 21112+3925 COU1969 216 0.1 37
Show 21102+3923 ALI 963 291 6.9 42
Show 21153+4017 A 1440 213 1.2 42
Show 21110+3919 MLB 891 253 8.7 43
Show 21086+3942 ALI1154 251 12.5 44
Show 21111+3918 MLB 892 188 4.3 44
Show 21126+3915 MLB 893 149 3.6 46
Show 21145+4036 COU2227 193 1.2 47
Show 21139+4042 TDT2840 235 0.7 49
Show 21165+3959 SEI1484 7 4.2 53
Show 21072+3958 TDT2765 Aa,Ab 149 0.4 54
Show 21072+3958 ES 1990 AB 38 5.8 54
Show 21128+3907 SEI1447 151 13.3 55
Show 21128+3907 GUR 13 Aa,Ab 44 0.5 55
Show 21108+3906 GUR 4 106 5.2 56
Show 21140+4051 KPP1300 32 9.9 57
Show 21132+3904 TDT2833 AB 88 0.6 58
Show 21132+3904 GUR 16 AC 285 11.8 58
Show 21168+4019 TOB 219 212 35.0 59
Show 21169+4009 COU1972 145 0.2 59
Show 21171+4001 A 1441 AB 273 0.2 59
Show 21171+4001 SEI1489 AC 102 16.4 59
Show 21171+4002 GRV 443 333 16.6 60
Show 21170+4020 SEI1487 238 21.2 62
Show 21094+3905 GUR 1 150 8.3 63
Show 21110+3859 GUR 5 2 0.2 63
Show 21154+3912 MLB 894 200 3.1 63
Show 21068+4021 ES 1989 174 6.0 63
Show 21130+3858 ES 257 317 6.6 64
Show 21172+3936 SEI1490 AB 95 20.1 65
Show 21112+3855 ES 1991 25 2.6 65
Show 21174+4020 SEI1492 246 24.6 65
Show 21175+3950 SEI1493 142 24.1 65
Show 21172+3936 LDS2504 BC 67 23.5 66
Show 21176+3945 STF2785 234 2.9 67
Show 21130+3854 GUR 15 64 4.8 68
Show 21061+4001 COU2224 67 0.4 68
Show 21148+3901 ALI 966 99 6.6 68
Show 21176+4023 LDS2505 23 4.3 69
Show 21097+3856 COU1967 192 0.8 69
Show 21180+4003 LDS2506 161 14.1 69

 
 
WDS 21120+4000 : COMPONENTS
 
 
  A
B pa=340.6°
sep=0.62"
 
 
21120+4000 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 211157.66+395947.3 Mag 11.34 PmRA 0.00
PmDE 30.0 Tycho2 3173-02198-1
Tycho2
Tycho2 3173-02198-1 Pflag RAmdeg 317.99021385 DEmdeg 39.99653229
PmRA 0.1 PmDE 29.8 E RAmdeg 26 E DEmdeg 25
E pmRA 2.1 E pmDE 1.9 EpRAm 1987.49 EpDEm 1987.74
Num 4 Q RAmdeg 1.2 Q DEmdeg 0.2 Q pmRA 1.2
Q pmDE 0.2 BTmag 11.438 E BTmag 0.052 VTmag 10.845
E VTmag 0.050 Prox 999 TYC T HIP
CCDM RAdeg 317.99021389 DEdeg 39.99646389 EpRA 1990 1.64
EpDE 1990 1.67 E RAdeg 32.2 E DEdeg 29.6 Posflg P
Corr 0.0
 
 
21120+4000 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 211157.64+395947.9 Mag 11.73 PmRA 0.00
PmDE 30.0 Calc delta mag 0.39 Calc coord yes