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Current system
20531+0104
TDT 2604


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

20531+0104 TDT 2604

 
 
20h 53m 07.86s +01° 03' 40.4" P.A. 87.00 sep 0.7 mag 11.31,12.04 Sp F8
 
 
Coord 2000 20531+0104 Discov num TDT2604 Comp Coord arcsec 2000 20 53 07.86 +01 03 40.4
Date first 1991 Date last 1991 Obs 1
Pa first 87 Pa last 87.1 P.A. Now (θ) 87.1°
Sep first 0.7 Sep last 0.68 Sep. Now (ρ) 0.68"
Mag pri 11.31 Mag sec 12.04 delta mag (ΔM) 0.73 Spectral class F8 (yellow-white)
Pri motion ra +004 Sec motion ra +004
Pri motion dec +001 Sec motion dec +001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquarius Tycho2 0513-00405-1 Gaia DR2 4228496805875254912
 
 
WDS 20531+0104 TDT 2604 : 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
20531+0104 TDT2604 1991 1 87 0.7 11.31 12.04 205307.86+010340.4

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

 
 
WDS 20531+0104 TDT 2604 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20531+0104 TDT 2604 : MEASURES
 
 
No records found.

 
 
WDS 20531+0104 : VIRTUAL EYEPIECE
 
 

20531+0104 TDT2604A mag 11.31 Sp F8 20531+0104 TDT2604B sep 0.7 P.A. 87.10 mag 12.04 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20531+0104 : ALADIN DSS IMAGE @ 20h 53m 07.86s +01° 03' 40.4"
 
 
 
 
WDS 20531+0104 TDT 2604 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20531+0104 TDT2604 distance=0' 20544+0112 LDS4860 distance=20' 20525+0130 BAL1575 distance=28' 20549+0051 SKF1772 distance=30' 20546-0042 A 877 distance=32' 20539-0035 J 2328 distance=33' 20509+0101 TDT2577Aa,Ab distance=34' 20509+0101 RST5472AB distance=34' 20514-0041 SKF1771 distance=34' 20523-0030 BAL 927 distance=36' 20510-0038 J 1711 distance=41' 20537+0154 RST5473 distance=51' 20551-0018 UC 4325 distance=55' 20508-0020 BAL 926 distance=56' 20521+0205 A 2286AB distance=64' 20521+0205 A 2286AB,C distance=64' 20571+0128 J 2332 distance=65' 20562-0014 TDT2643 distance=69' 20486-0055 BAL 616 distance=70' 20572+0028 HWE 55AB distance=71' 20572+0028 BU 1496AC distance=71' 20575+0036 HWE 101AB distance=71' 20575+0036 HWE 101AC distance=71' 20572+0144 UC 4342 distance=73' 20506+0001 TDT2572 distance=74' 20578-0043 UC 4344 distance=74' 20510+0210 BAL1574 distance=75' 20510+0211 BAL1573 distance=76' 20481+0053 CVR 873 distance=77' 20493+0156 OSO 136 distance=77' 20495-0006 BAL 925 distance=79' 20584+0118 RST5474 distance=81' 20485+0143 RST5471 distance=81' 20521+0225 TDT2592 distance=84' 20475+0105 BAL1220 distance=84' 20485+0012 UC 4295 distance=88' 20504+0222 GWP3004 distance=89' 20585+0143 GWP3023 distance=90' 20510+0227 BAL2037 distance=90' 20575+0214 BAL1577 distance=97' 20478+0007 SKF2612 distance=99' 20472+0021 CBL 529 distance=99' 20590-0014 TOB 314 distance=101' 20472-0006 BAL 924 distance=106' 20481+0224 BAL2035 distance=109' 20595-0014 BAL 928 distance=109' 21002-0014 TDS1110 distance=117' 20535+0300 HEI 819 distance=117' 20454+0023 A 876 distance=123' 20525+0310 GWP3009 distance=127' 20528+0311 HLD 43 distance=128' 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 20531+0104 TDT2604 87 0.7
Show 20544+0112 LDS4860 138 3.4 20
Show 20525+0130 BAL1575 175 16.6 28
Show 20549+0051 SKF1772 334 2.5 30
Show 20546-0042 A 877 9 0.6 32
Show 20539-0035 J 2328 351 3.2 33
Show 20509+0101 TDT2577 Aa,Ab 104 0.5 34
Show 20509+0101 RST5472 AB 77 3.7 34
Show 20514-0041 SKF1771 13 1.2 34
Show 20523-0030 BAL 927 285 4.5 36
Show 20510-0038 J 1711 222 8.4 41
Show 20537+0154 RST5473 20 3.0 51
Show 20551-0018 UC 4325 271 61.6 55
Show 20508-0020 BAL 926 239 2.4 56
Show 20521+0205 A 2286 AB 5 0.0 64
Show 20521+0205 A 2286 AB,C 48 1.1 64
Show 20571+0128 J 2332 231 3.1 65
Show 20562-0014 TDT2643 250 0.5 69
Show 20486-0055 BAL 616 206 2.4 70
Show 20572+0028 HWE 55 AB 71 26.3 71
Show 20572+0028 BU 1496 AC 111 33.5 71
Show 20575+0036 HWE 101 AB 139 40.7 71
Show 20575+0036 HWE 101 AC 313 11.7 71
Show 20572+0144 UC 4342 239 14.2 73
Show 20506+0001 TDT2572 89 0.5 74
Show 20578-0043 UC 4344 15 42.7 74
Show 20510+0210 BAL1574 21 18.3 75
Show 20510+0211 BAL1573 225 5.6 76
Show 20481+0053 CVR 873 324 12.3 77
Show 20493+0156 OSO 136 109 12.8 77
Show 20495-0006 BAL 925 175 19.7 79
Show 20584+0118 RST5474 194 2.0 81
Show 20485+0143 RST5471 14 0.6 81
Show 20521+0225 TDT2592 183 1.5 84
Show 20475+0105 BAL1220 193 21.1 84
Show 20485+0012 UC 4295 196 69.5 88
Show 20504+0222 GWP3004 12 15.6 89
Show 20585+0143 GWP3023 358 76.3 90
Show 20510+0227 BAL2037 2 6.4 90
Show 20575+0214 BAL1577 221 4.9 97
Show 20478+0007 SKF2612 63 1.0 99
Show 20472+0021 CBL 529 43 49.8 99
Show 20590-0014 TOB 314 227 27.6 101
Show 20472-0006 BAL 924 128 15.4 106
Show 20481+0224 BAL2035 304 12.9 109
Show 20595-0014 BAL 928 129 13.6 109
Show 21002-0014 TDS1110 79 0.9 117
Show 20535+0300 HEI 819 135 0.2 117
Show 20454+0023 A 876 68 0.6 123
Show 20525+0310 GWP3009 237 76.6 127
Show 20528+0311 HLD 43 9 2.2 128

 
 
WDS 20531+0104 : COMPONENTS
 
 
  A
B pa=87.1°
sep=0.68"
 
 
20531+0104 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 205307.86+010340.4 Mag 11.31 Spectral class F8 (yellow-white)
PmRA 4.00 PmDE 1.0 Tycho2 0513-00405-1
Tycho2
Tycho2 0513-00405-1 Pflag RAmdeg 313.28284387 DEmdeg 1.06121932
PmRA 4.2 PmDE 1.0 E RAmdeg 25 E DEmdeg 27
E pmRA 1.1 E pmDE 1.2 EpRAm 1977.40 EpDEm 1973.38
Num 8 Q RAmdeg 0.6 Q DEmdeg 1.3 Q pmRA 0.5
Q pmDE 1.3 BTmag 11.253 E BTmag 0.064 VTmag 10.916
E VTmag 0.071 Prox 999 TYC T HIP
CCDM RAdeg 313.28283028 DEdeg 1.06123139 EpRA 1990 1.83
EpDE 1990 1.58 E RAdeg 35.4 E DEdeg 47.8 Posflg
Corr -0.2
 
 
20531+0104 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205307.91+010340.4 Mag 12.04 PmRA 4.00
PmDE 1.0 Calc delta mag 0.73 Calc coord yes