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Doubles in session


Current system
20306+4956
TDT 2331


Nearby doubles
15' : 20320+5001
HEI 909

18' : 20300+4940
HU 589

19' : 20304+5014
ES 1100

25' : 20330+4950
MCA 61AB

26' : 20311+5022
ES 1101

27' : 20318+4933
BU 1136

33' : 20273+4948
BVD 269

40' : 20347+4957
ES 2696

44' : 20309+4913
S 755AB

44' : 20313+4913
S 756

47' : 20286+5039
HJ 1524

54' : 20323+5048
RAO 615

59' : 20271+4909
ES 802

60' : 20301+4857
BU 669AB

73' : 20378+5018
DAM 293

75' : 20376+5028
L 49

76' : 20265+5101
KPP4198

78' : 20380+5025
DAM 294

79' : 20246+4904
HEI 908

80' : 20383+5023
HU 588AB

80' : 20266+5106
HDS2923

82' : 20367+5053
HLD 39AB

83' : 20356+5104
TDT2400

84' : 20349+5109
ES 990

85' : 20223+4930
TDT2212

92' : 20280+4829
HU 587



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

20306+4956 TDT 2331

 
 
20h 30m 34.69s +49° 56' 27.1" P.A. 235.00 sep 0.9 mag 12.10,12.30
 
 
Coord 2000 20306+4956 Discov num TDT2331 Comp Coord arcsec 2000 20 30 34.69 +49 56 27.1
Date first 1991 Date last 1991 Obs 1
Pa first 235 Pa last 234.5 P.A. Now (θ) 234.5°
Sep first 0.9 Sep last 0.86 Sep. Now (ρ) 0.86"
Mag pri 12.10 Mag sec 12.30 delta mag (ΔM) 0.2 Spectral class
Pri motion ra -004 Sec motion ra -004
Pri motion dec -013 Sec motion dec -013
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3581-00179-1 Gaia DR2 2180138323019071744
 
 
WDS 20306+4956 TDT 2331 : 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
20306+4956 TDT2331 1991 1 235 0.9 12.10 12.30 203034.69+495627.1

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

 
 
WDS 20306+4956 TDT 2331 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20306+4956 TDT 2331 : MEASURES
 
 
No records found.

 
 
WDS 20306+4956 : VIRTUAL EYEPIECE
 
 

20306+4956 TDT2331A mag 12.1 20306+4956 TDT2331B sep 0.7 P.A. 222.10 mag 12.3 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 20306+4956 : ALADIN DSS IMAGE @ 20h 30m 34.69s +49° 56' 27.1"
 
 
 
 
WDS 20306+4956 TDT 2331 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20306+4956 TDT2331 distance=0' 20320+5001 HEI 909 distance=15' 20300+4940 HU 589 distance=18' 20304+5014 ES 1100 distance=19' 20330+4950 MCA 61AB distance=25' 20330+4950 RBR 49AC distance=25' 20311+5022 ES 1101 distance=26' 20318+4933 BU 1136 distance=27' 20273+4948 BVD 269 distance=33' 20347+4957 ES 2696 distance=40' 20309+4913 S 755AB distance=44' 20309+4913 ES 2695AC distance=44' 20313+4913 S 756 distance=44' 20286+5039 HJ 1524 distance=47' 20323+5048 RAO 615 distance=54' 20271+4909 ES 802 distance=59' 20301+4857 BU 669AB distance=60' 20301+4857 BU 669AC distance=60' 20301+4857 GUI 32AD distance=60' 20378+5018 DAM 293 distance=73' 20376+5028 L 49 distance=75' 20265+5101 KPP4198 distance=76' 20380+5025 DAM 294 distance=78' 20246+4904 HEI 908 distance=79' 20383+5023 HU 588AB distance=80' 20266+5106 HDS2923 distance=80' 20367+5053 HEI 879Aa,Ab distance=82' 20367+5053 HLD 39AB distance=82' 20356+5104 TDT2400 distance=83' 20349+5109 ES 990 distance=84' 20223+4930 TDT2212 distance=85' 20280+4829 HU 587 distance=92' 20318+5128 TDT2339 distance=93' 20246+4842 ES 2694 distance=96' 20261+5122 WFC 233 distance=96' 20348+4830 ES 666 distance=96' 20281+4822 TDT2302 distance=98' 20379+5106 KPP4397CD distance=99' 20300+5135 RAO 435 distance=99' 20379+5106 ES 88AB distance=99' 20379+5106 KPP4397AC distance=99' 20379+5106 KPP4397BC distance=99' 20336+5131 KPP2429AB distance=99' 20200+5008 KPP4192 distance=103' 20281+4815 ES 803 distance=105' 20205+5039 KPP 470 distance=106' 20273+4815 TDT2286 distance=107' 20285+5141 KPP2206 distance=107' 20334+5142 TDT2369 distance=110' 20418+4929 HEI 910 distance=112' 20421+5013 ES 91BC distance=112' 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 20306+4956 TDT2331 235 0.9
Show 20320+5001 HEI 909 234 2.7 15
Show 20300+4940 HU 589 204 1.6 18
Show 20304+5014 ES 1100 285 2.6 19
Show 20330+4950 MCA 61 AB 233 0.1 25
Show 20330+4950 RBR 49 AC 136 4.3 25
Show 20311+5022 ES 1101 240 2.2 26
Show 20318+4933 BU 1136 215 0.7 27
Show 20273+4948 BVD 269 288 11.1 33
Show 20347+4957 ES 2696 147 12.2 40
Show 20309+4913 S 755 AB 278 59.9 44
Show 20309+4913 ES 2695 AC 118 20.2 44
Show 20313+4913 S 756 327 60.7 44
Show 20286+5039 HJ 1524 125 5.3 47
Show 20323+5048 RAO 615 157 0.8 54
Show 20271+4909 ES 802 238 5.1 59
Show 20301+4857 BU 669 AB 336 15.0 60
Show 20301+4857 BU 669 AC 89 55.8 60
Show 20301+4857 GUI 32 AD 44 131.1 60
Show 20378+5018 DAM 293 286 4.8 73
Show 20376+5028 L 49 82 4.1 75
Show 20265+5101 KPP4198 173 1.6 76
Show 20380+5025 DAM 294 258 4.1 78
Show 20246+4904 HEI 908 331 2.4 79
Show 20383+5023 HU 588 AB 245 2.0 80
Show 20266+5106 HDS2923 196 0.2 80
Show 20367+5053 HEI 879 Aa,Ab 137 0.1 82
Show 20367+5053 HLD 39 AB 174 7.5 82
Show 20356+5104 TDT2400 43 1.2 83
Show 20349+5109 ES 990 299 2.6 84
Show 20223+4930 TDT2212 356 2.5 85
Show 20280+4829 HU 587 338 0.6 92
Show 20318+5128 TDT2339 338 1.0 93
Show 20246+4842 ES 2694 321 11.9 96
Show 20261+5122 WFC 233 322 5.1 96
Show 20348+4830 ES 666 317 3.0 96
Show 20281+4822 TDT2302 249 1.4 98
Show 20379+5106 KPP4397 CD 35 2.2 99
Show 20300+5135 RAO 435 301 3.1 99
Show 20379+5106 ES 88 AB 127 7.8 99
Show 20379+5106 KPP4397 AC 193 51.7 99
Show 20379+5106 KPP4397 BC 201 49.0 99
Show 20336+5131 KPP2429 AB 346 20.8 99
Show 20200+5008 KPP4192 232 1.5 103
Show 20281+4815 ES 803 351 6.1 105
Show 20205+5039 KPP 470 129 3.9 106
Show 20273+4815 TDT2286 50 1.7 107
Show 20285+5141 KPP2206 256 18.3 107
Show 20334+5142 TDT2369 61 2.4 110
Show 20418+4929 HEI 910 201 1.6 112
Show 20421+5013 ES 91 BC 247 14.8 112

 
 
WDS 20306+4956 : COMPONENTS
 
 
  A
B pa=222.1°
sep=0.67"
 
 
20306+4956 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 203034.69+495627.1 Mag 12.1 PmRA -4.00
PmDE -13.0 Tycho2 3581-00179-1
Tycho2
Tycho2 3581-00179-1 Pflag RAmdeg 307.64445454 DEmdeg 49.94082226
PmRA -4.4 PmDE -12.7 E RAmdeg 54 E DEmdeg 61
E pmRA 2.6 E pmDE 2.4 EpRAm 1986.50 EpDEm 1983.96
Num 3 Q RAmdeg 0.5 Q DEmdeg 0.3 Q pmRA 0.5
Q pmDE 0.3 BTmag 11.855 E BTmag 0.082 VTmag 11.617
E VTmag 0.115 Prox 921 TYC T HIP
CCDM RAdeg 307.64447028 DEdeg 49.94085111 EpRA 1990 1.76
EpDE 1990 1.76 E RAdeg 55.5 E DEdeg 63.5 Posflg
Corr 0.0
 
 
20306+4956 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203034.64+495626.6 Mag 12.3 PmRA -4.00
PmDE -13.0 Calc delta mag 0.2 Calc coord yes