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Current system
18020+3153
SEI 555


Nearby doubles
23' : 18016+3132
BRT 258

26' : 18039+3200
COU1004

29' : 18041+3159
KPP 641

31' : 18019+3123
SEI 554

40' : 18028+3115
TDT 651

41' : 18015+3113
TDT 639

49' : 18047+3227
SEI 556

51' : 17591+3228
HU 1185

52' : 18038+3240
UC 3483

66' : 18020+3047
COU 811

67' : 17580+3237
KPP4074

69' : 18061+3110
SLE 134

72' : 18071+3223
HJ 1314

72' : 17565+3139
TDT 585

74' : 18054+3054
SLE 130

78' : 17569+3236
HU 1184

82' : 17566+3110
ES 343

86' : 18016+3319
HO 76AB

87' : 17558+3117
SEI 552

88' : 17569+3252
SEI 553

90' : 17551+3135
ITF 21

90' : 17551+3134
AG 215AB

91' : 18049+3316
HO 78

93' : 18041+3025
KPP4077

94' : 18039+3023
WIS 322

95' : 18092+3129
COU 812



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

18020+3153 SEI 555

 
 
18h 01m 58.72s +31° 53' 11.4" P.A. 109.00 sep 19.4 mag 11.56,12.50
 
 
Coord 2000 18020+3153 Discov num SEI 555 Comp Coord arcsec 2000 18 01 58.72 +31 53 11.4
Date first 1899 Date last 2015 Obs 28
Pa first 116 Pa last 108.9 P.A. Now (θ) 108.9°
Sep first 19.2 Sep last 19.408 Sep. Now (ρ) 19.408"
Mag pri 11.56 Mag sec 12.50 delta mag (ΔM) 0.94 Spectral class
Pri motion ra -011 Sec motion ra -002
Pri motion dec -025 Sec motion dec -008
Notes U (Proper motion indicates non-physical)
rPM=0.704
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules Tycho2 2625-02014-1 Gaia DR2 4603138999149032704
 
 
WDS 18020+3153 SEI 555 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
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
18020+3153 SEI 555 2007 14 109 19.7 11.56 12.50 LD 180158.72+315311.4
18020+3153 SEI 555 2010 15 109 19.7 11.56 12.50 LD 180158.72+315311.4
18020+3153 SEI 555 2015 18 109 19.4 11.56 12.50 L 180158.72+315311.4

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

 
 
WDS 18020+3153 SEI 555 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18020+3153 SEI 555 : MEASURES
 
 
No records found.

 
 
WDS 18020+3153 : VIRTUAL EYEPIECE
 
 

18020+3153 SEI 555A mag 11.56 18020+3153 SEI 555B sep 16.8 P.A. 112.00 mag 12.5 virtual eyepiece
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Radius:
Components only
 
 
WDS 18020+3153 : ALADIN DSS IMAGE @ 18h 01m 58.72s +31° 53' 11.4"
 
 
 
 
WDS 18020+3153 SEI 555 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18020+3153 SEI 555 distance=1' 18016+3132 BRT 258 distance=23' 18039+3200 COU1004 distance=26' 18041+3159 KPP 641 distance=29' 18019+3123 SEI 554 distance=31' 18028+3115 TDT 651 distance=40' 18015+3113 TDT 639 distance=41' 18047+3227 SEI 556 distance=49' 17591+3228 HU 1185 distance=51' 18038+3240 UC 3483 distance=52' 18020+3047 COU 811 distance=66' 17580+3237 KPP4074 distance=67' 18061+3110 SLE 134 distance=69' 18071+3223 HJ 1314 distance=72' 17565+3139 TDT 585 distance=72' 18054+3054 SLE 130 distance=74' 17569+3236 HU 1184 distance=78' 17566+3110 ES 343 distance=82' 18016+3319 HO 76AB distance=86' 18016+3319 HO 76AC distance=86' 17558+3117 SEI 552 distance=87' 17569+3252 SEI 553 distance=88' 17551+3135 ITF 21 distance=90' 17551+3134 AG 215AB distance=90' 17551+3134 ITF 16AC distance=90' 18049+3316 HO 78 distance=91' 18041+3025 KPP4077 distance=93' 18039+3023 WIS 322 distance=94' 18094+3144 A 237DE distance=94' 18092+3129 COU 812 distance=95' 18094+3144 A 237AB distance=95' 18094+3144 A 237AC distance=95' 18094+3144 A 237AD distance=95' 18094+3144 DAM 807AF distance=95' 18054+3029 SLE 131AB distance=96' 18054+3029 SLE 131AC distance=96' 18054+3029 SLE 131BC distance=97' 18095+3151 KPP 951 distance=97' 17566+3045 COU 999 distance=97' 18001+3328 KU 116AB distance=98' 18001+3328 BKO 50AC distance=98' 17544+3135 SEI 550 distance=100' 18006+3014 J 1127 distance=102' 18070+3034 SCA 170Aa,Ab distance=103' 18070+3034 AC 15AB distance=103' 18070+3034 AC 15AC distance=103' 18070+3034 AC 15AD distance=103' 18070+3034 AC 15AE distance=103' 18070+3034 AC 15AF distance=103' 18070+3034 AC 15AG distance=103' 18079+3042 SLE 138 distance=104' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 18020+3153 SEI 555 109 19.4 1
Show 18016+3132 BRT 258 269 3.7 23
Show 18039+3200 COU1004 109 1.3 26
Show 18041+3159 KPP 641 117 5.8 29
Show 18019+3123 SEI 554 48 23.5 31
Show 18028+3115 TDT 651 228 0.6 40
Show 18015+3113 TDT 639 142 0.6 41
Show 18047+3227 SEI 556 225 13.1 49
Show 17591+3228 HU 1185 146 0.4 51
Show 18038+3240 UC 3483 310 20.2 52
Show 18020+3047 COU 811 153 2.2 66
Show 17580+3237 KPP4074 209 1.7 67
Show 18061+3110 SLE 134 292 7.2 69
Show 18071+3223 HJ 1314 152 17.6 72
Show 17565+3139 TDT 585 358 0.6 72
Show 18054+3054 SLE 130 103 6.7 74
Show 17569+3236 HU 1184 205 0.9 78
Show 17566+3110 ES 343 281 8.5 82
Show 18016+3319 HO 76 AB 202 14.2 86
Show 18016+3319 HO 76 AC 207 57.5 86
Show 17558+3117 SEI 552 235 5.6 87
Show 17569+3252 SEI 553 28 9.7 88
Show 17551+3135 ITF 21 313 5.4 90
Show 17551+3134 AG 215 AB 49 42.8 90
Show 17551+3134 ITF 16 AC 107 11.3 90
Show 18049+3316 HO 78 205 8.5 91
Show 18041+3025 KPP4077 249 16.8 93
Show 18039+3023 WIS 322 284 999.9 94
Show 18094+3144 A 237 DE 308 8.2 94
Show 18092+3129 COU 812 265 0.7 95
Show 18094+3144 A 237 AB 103 2.2 95
Show 18094+3144 A 237 AC 358 28.7 95
Show 18094+3144 A 237 AD 221 101.8 95
Show 18094+3144 DAM 807 AF 63 10.6 95
Show 18054+3029 SLE 131 AB 203 52.4 96
Show 18054+3029 SLE 131 AC 206 67.2 96
Show 18054+3029 SLE 131 BC 217 15.0 97
Show 18095+3151 KPP 951 259 7.8 97
Show 17566+3045 COU 999 311 1.4 97
Show 18001+3328 KU 116 AB 333 58.8 98
Show 18001+3328 BKO 50 AC 189 24.6 98
Show 17544+3135 SEI 550 20 5.7 100
Show 18006+3014 J 1127 341 2.9 102
Show 18070+3034 SCA 170 Aa,Ab 230 0.2 103
Show 18070+3034 AC 15 AB 331 1.4 103
Show 18070+3034 AC 15 AC 60 97.0 103
Show 18070+3034 AC 15 AD 103 140.1 103
Show 18070+3034 AC 15 AE 78 169.9 103
Show 18070+3034 AC 15 AF 165 162.4 103
Show 18070+3034 AC 15 AG 175.9 103
Show 18079+3042 SLE 138 329 10.1 104

 
 
WDS 18020+3153 : COMPONENTS
 
 
  A
B pa=112.0°
sep=16.81"
 
 
18020+3153 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 180158.72+315311.4 Mag 11.56 PmRA -11.00
PmDE -25.0 Tycho2 2625-02014-1
Tycho2
Tycho2 2625-02014-1 Pflag RAmdeg 270.49469619 DEmdeg 31.88652562
PmRA -9.9 PmDE -24.4 E RAmdeg 57 E DEmdeg 57
E pmRA 2.2 E pmDE 2.1 EpRAm 1982.68 EpDEm 1981.95
Num 4 Q RAmdeg 0.6 Q DEmdeg 0.5 Q pmRA 0.6
Q pmDE 0.5 BTmag 12.220 E BTmag 0.130 VTmag 11.561
E VTmag 0.100 Prox 999 TYC HIP
CCDM RAdeg 270.49472417 DEdeg 31.88658222 EpRA 1990 1.62
EpDE 1990 1.56 E RAdeg 60.2 E DEdeg 61.3 Posflg
Corr -0.1
CCDM
Ccdm 18020+3153 RComp Comp A Note1
Note2 Discov num DRAs -1.31 DDEs 11.2
R dRAs 65 Year Theta Rho
Obs 2 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17583N3153A
HIC
 
 
18020+3153 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 180159.94+315305.1 Mag 12.5 PmRA -2.00
PmDE -8.0 Calc delta mag 0.94 Calc coord yes
CCDM
Ccdm 18020+3153 RComp Comp B Note1
Note2 Discov num SEI 555 DRAs 0.14 DDEs 4.2
R dRAs 65 Year 1899 Theta 116 Rho 19.2
Obs 1 Vmag 10.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17583N3153B
HIC