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18546+3020
HDS 2681


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16' : 18537+3012
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TDT1158



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

18546+3020 HDS 2681

 
 
18h 54m 38.15s +30° 19' 45.7" P.A. 282.00 sep 4.4 mag 9.16,13.30 Sp A2 dist. 263.85 pc (860.68 l.y.)
 
 
Coord 2000 18546+3020 Discov num HDS2681 Comp Coord arcsec 2000 18 54 38.15 +30 19 45.7
Date first 1991 Date last 1991 Obs 2
Pa first 282 Pa last 281.8 P.A. Now (θ) 281.8°
Sep first 4.3 Sep last 4.36 Sep. Now (ρ) 4.36"
Mag pri 9.16 Mag sec 13.30 delta mag (ΔM) 4.14 Spectral class A2 (white)
Pri motion ra -005 Sec motion ra -007
Pri motion dec +000 Sec motion dec -003
Notes
rPM=0.473
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Lyra HIP 92809 Tycho2 2639-01577-1 Gaia DR2 2041514439605511040
BD BD+30 3342 Distance 263.85 Distance ly 860.68
 
 
WDS 18546+3020 HDS 2681 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HDS Hipparcos Double Star (from additional DD list) ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18546+3020 HDS2681 1991 2 282 4.4 9.16 13.30 A2 185438.15+301945.7

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

 
 
WDS 18546+3020 HDS 2681 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18546+3020 HDS 2681 : MEASURES
 
 
No records found.

 
 
WDS 18546+3020 : VIRTUAL EYEPIECE
 
 

18546+3020 HDS2681A mag 9.16 Sp A2 18546+3020 HDS2681B sep 3.8 P.A. 283.60 mag 13.3 virtual eyepiece
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Radius:
Components only
 
 
WDS 18546+3020 : ALADIN DSS IMAGE @ 18h 54m 38.15s +30° 19' 45.7"
 
 
 
 
WDS 18546+3020 HDS 2681 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18546+3020 HDS2681 distance=1' 18537+3012 MLB 651 distance=16' 18537+3008 TDT1118 distance=18' 18548+3002 LSC 84AB distance=19' 18548+3002 LSC 84AC distance=19' 18550+3053 A 258 distance=34' 18525+2949 KPP4126 distance=42' 18564+2944 COU1014 distance=42' 18579+3020 COU1017 distance=43' 18541+3103 ES 2421 distance=44' 18530+3058 LEP 159 distance=44' 18582+3011 COU1018Aa,Ab distance=48' 18582+3011 ES 2670AB distance=48' 18514+2954 TDT1087 distance=50' 18518+3105 COU1012 distance=59' 18569+3112 ES 2422 distance=60' 18508+2936 TDT1082 distance=67' 18501+2949 HJ 1352 distance=67' 18555+2914 STF2419 distance=68' 18528+3125 A 257AB distance=69' 18528+3125 A 257A,CD distance=69' 18528+3125 A 257EF distance=71' 18528+3125 A 257CD,EF distance=71' 18528+3125 A 257CD distance=71' 18582+2924 AG 367 distance=73' 18597+2949 COU1019AB distance=74' 18597+2949 COU1019AC distance=74' 18490+3017 TDT1067 distance=74' 18594+2936 STF2430 distance=76' 18598+3055 LEP 160 distance=76' 18526+3131 SEI 576 distance=76' 18486+3016 TDT1064 distance=78' 18542+2856 MLB 467 distance=85' 18586+2904 TDT1158 distance=92' 18482+2933 TDT1059 distance=97' 18552+2842 MLB 693AB distance=99' 18552+2842 MLB 693AC distance=99' 19002+3122 HLM 14 distance=100' 19012+2918 TDT1182 distance=106' 18486+3132 TDT1063AB distance=106' 18486+3132 TDT1063AC distance=106' 18468+3055 BRT 261 distance=107' 18501+3149 A 256 distance=107' 18488+3136 LDS1015 distance=107' 19014+2917 HJ 1361 distance=109' 18465+3055 A 254 distance=111' 19013+3132 LEP 161 distance=112' 18542+3214 HU 1294 distance=115' 18472+3125 STF2397 distance=116' 18555+3215 COU1013 distance=116' 18576+3209 A 260 distance=116' 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 18546+3020 HDS2681 282 4.4 1
Show 18537+3012 MLB 651 66 4.6 16
Show 18537+3008 TDT1118 161 0.6 18
Show 18548+3002 LSC 84 AB 22 0.0 19
Show 18548+3002 LSC 84 AC 138 0.3 19
Show 18550+3053 A 258 228 0.3 34
Show 18525+2949 KPP4126 220 1.4 42
Show 18564+2944 COU1014 46 0.2 42
Show 18579+3020 COU1017 185 1.8 43
Show 18541+3103 ES 2421 69 7.7 44
Show 18530+3058 LEP 159 357 10.5 44
Show 18582+3011 COU1018 Aa,Ab 210 3.7 48
Show 18582+3011 ES 2670 AB 71 11.2 48
Show 18514+2954 TDT1087 204 1.6 50
Show 18518+3105 COU1012 238 0.4 59
Show 18569+3112 ES 2422 178 5.7 60
Show 18508+2936 TDT1082 187 0.6 67
Show 18501+2949 HJ 1352 251 13.5 67
Show 18555+2914 STF2419 177 3.4 68
Show 18528+3125 A 257 AB 94 0.9 69
Show 18528+3125 A 257 A,CD 324 82.4 69
Show 18528+3125 A 257 EF 231 6.2 71
Show 18528+3125 A 257 CD,EF 225 28.0 71
Show 18528+3125 A 257 CD 262 0.7 71
Show 18582+2924 AG 367 297 4.8 73
Show 18597+2949 COU1019 AB 350 0.4 74
Show 18597+2949 COU1019 AC 52 5.8 74
Show 18490+3017 TDT1067 342 2.2 74
Show 18594+2936 STF2430 187 1.5 76
Show 18598+3055 LEP 160 63 5.4 76
Show 18526+3131 SEI 576 297 16.0 76
Show 18486+3016 TDT1064 163 0.5 78
Show 18542+2856 MLB 467 196 9.6 85
Show 18586+2904 TDT1158 228 8.3 92
Show 18482+2933 TDT1059 252 2.7 97
Show 18552+2842 MLB 693 AB 176 6.5 99
Show 18552+2842 MLB 693 AC 154 9.5 99
Show 19002+3122 HLM 14 137 12.7 100
Show 19012+2918 TDT1182 187 2.0 106
Show 18486+3132 TDT1063 AB 106 0.1 106
Show 18486+3132 TDT1063 AC 142 1.1 106
Show 18468+3055 BRT 261 18 4.7 107
Show 18501+3149 A 256 60 2.9 107
Show 18488+3136 LDS1015 301 110.3 107
Show 19014+2917 HJ 1361 162 18.3 109
Show 18465+3055 A 254 48 2.3 111
Show 19013+3132 LEP 161 114 9.1 112
Show 18542+3214 HU 1294 119 1.6 115
Show 18472+3125 STF2397 269 3.9 116
Show 18555+3215 COU1013 147 0.6 116
Show 18576+3209 A 260 246 0.9 116

 
 
WDS 18546+3020 : COMPONENTS
 
 
  A
B pa=283.6°
sep=3.79"
 
 
18546+3020 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 185438.15+301945.7 Mag 9.16 Spectral class A2 (white)
PmRA -5.00 PmDE 0.0 HIP 92809 Tycho2 2639-01577-1
BD BD+30 3342
Tycho2
Tycho2 2639-01577-1 Pflag RAmdeg 283.65896943 DEmdeg 30.32935514
PmRA -4.5 PmDE -0.3 E RAmdeg 9 E DEmdeg 9
E pmRA 1.0 E pmDE 1.0 EpRAm 1989.61 EpDEm 1990.07
Num 15 Q RAmdeg 1.0 Q DEmdeg 1.1 Q pmRA 1.0
Q pmDE 1.1 BTmag 9.320 E BTmag 0.018 VTmag 9.158
E VTmag 0.017 Prox 44 TYC T HIP 92809
CCDM A RAdeg 283.65898194 DEdeg 30.32935611 EpRA 1990 1.50
EpDE 1990 1.65 E RAdeg 9.0 E DEdeg 8.5 Posflg
Corr 0.0
Hipparcos
Catalog H HIP 92809 Proxy H RAhms 18 54 38.15
DEdms +30 19 45.7 Vmag 9.14 VarFlag R Vmag G
RAdeg 283.659 DEdeg 30.3294 AstroRef A Plx 3.8
CCDM 18546+3020 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual D M HIP AB
Theta 282 Rho 4.348 HD BD BD+30 3342
CD CP Dm number +30 3342 VIred 0.07
SpType A2 R SpType Coord arcsec 2000 185438.15+301945.7
Hipparcos 2
HIP 92809 Sn 15 So 3 Nc 2
RArad 4.950783137 DErad 0.5293471387 Plx 3.79 PmRA -4.51
PmDE -2.97 E RArad 0.72 E DErad 0.85 E Plx 1.02
E pmRA 0.76 E pmDE 1.16 Hpmag 9.1649 E Hpmag 0.0024
SHp 0.023 VA 0 BV 0.141 E BV 0.14
VI 0.07
CCDM
Ccdm 18546+3020 RComp Comp A Note1
Note2 Discov num DRAs 2.15 DDEs -14.3
R dRAs 82 Year Theta Rho
Obs 2 Vmag 9.2 Sp A2 PmNote *
PmRA -6 PmDE -3 Dm number +30 3342 Cat1 BD
Name2 +30 1783 Cat2 AGK2/3 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 92809
 
 
18546+3020 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 185437.87+301946.6 Mag 13.3 PmRA -7.00
PmDE -3.0 Calc delta mag 4.14 Calc coord yes
CCDM
Ccdm 18546+3020 RComp Comp B Note1
Note2 Discov num HDS DRAs 1.83 DDEs -13.5
R dRAs 82 Year 1991 Theta 282 Rho 4.4
Obs 1 Vmag 13.3 Sp PmNote *
PmRA -6 PmDE -3 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 92809