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Doubles in session


Current system
20473-0408
LDS 4858


Nearby doubles
9' : 20474-0359
TDT2540

10' : 20481-0410
J 1710

13' : 20469-0417
J 1709

33' : 20456-0426
OCC9021

46' : 20455-0332
AHD 29

49' : 20452-0331
AHD 28

52' : 20458-0454
UC 4282AB

59' : 20512-0401
UC 4308

67' : 20481-0302
A 174

69' : 20428-0418
UC 4265

72' : 20463-0258
LDS 724

72' : 20492-0302
RST4682

74' : 20482-0255
TDT2549

76' : 20447-0511
HJ 924

80' : 20423-0344
KPP 476

81' : 20468-0527
KPP 478

83' : 20525-0438
TDS1106

84' : 20421-0336
RST4677

86' : 20417-0424
BU 267

86' : 20424-0323
RST4678

86' : 20418-0430
HJ 921

87' : 20523-0324
CVR 876

95' : 20507-0529
BRT 507

95' : 20453-0239
BRT 506

96' : 20419-0458
RST4676

96' : 20531-0450
GWP3010



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20473-0408 LDS 4858

 
 
20h 47m 19.75s -04° 07' 47.5" P.A. 11.00 sep 17.3 mag 16.20,16.71 Sp DA5+M0V:
 
 
Coord 2000 20473-0408 Discov num LDS4858 Comp Coord arcsec 2000 20 47 19.75 -04 07 47.5
Date first 1960 Date last 2015 Obs 4
Pa first 10 Pa last 11 P.A. Now (θ) 11°
Sep first 17.0 Sep last 17.307 Sep. Now (ρ) 17.307"
Mag pri 16.20 Mag sec 16.71 delta mag (ΔM) 0.51 Spectral class DA5+M0V: (white dwarf/red)
Pri motion ra -076 Sec motion ra -076
Pri motion dec -195 Sec motion dec -195
Notes N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquarius Gaia DR2 6914811447214284416
 
 
WDS 20473-0408 LDS 4858 : NOTES
 
 
discov_num notes refcode
LDS4858 NLTT 49881/49880 Chm2004
 
 
REFERENCES
 
 
refcode metd author reference
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
 
 
DISCOVERER
 
 
idgroup discov author
1 LDS Luyten p.m. catalog (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
20473-0408 LDS4858 2000 3 356 15.4 16.20 16.71 D 204719.75-040747.5
20473-0408 LDS4858 2015 4 11 17.3 16.20 16.71 DA5+M0V: N 204719.75-040747.5

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

 
 
WDS 20473-0408 LDS 4858 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20473-0408 LDS 4858 : MEASURES
 
 
No records found.

 
 
WDS 20473-0408 : VIRTUAL EYEPIECE
 
 

20473-0408 LDS4858A mag 16.2 Sp DA5 20473-0408 LDS4858B sep 17.3 P.A. 11.00 mag 16.71 Sp M0V: 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 20473-0408 : ALADIN DSS IMAGE @ 20h 47m 19.75s -04° 07' 47.5"
 
 
 
 
WDS 20473-0408 LDS 4858 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20473-0408 LDS4858 distance=0' 20474-0359 TDT2540 distance=9' 20481-0410 J 1710 distance=10' 20469-0417 J 1709 distance=13' 20456-0426 OCC9021 distance=33' 20455-0332 AHD 29 distance=46' 20452-0331 AHD 28 distance=49' 20458-0454 UC 4282AB distance=52' 20512-0401 UC 4308 distance=59' 20481-0302 A 174 distance=67' 20428-0418 UC 4265 distance=69' 20463-0258 LDS 724 distance=72' 20492-0302 RST4682 distance=72' 20482-0255 TDT2549 distance=74' 20447-0511 HJ 924 distance=76' 20423-0344 KPP 476 distance=80' 20468-0527 KPP 478 distance=81' 20525-0438 TDS1106 distance=83' 20421-0336 RST4677 distance=84' 20417-0424 BU 267 distance=86' 20424-0323 RST4678 distance=86' 20418-0430 HJ 921 distance=86' 20523-0324 CVR 876 distance=87' 20507-0529 BRT 507 distance=95' 20453-0239 BRT 506 distance=95' 20419-0458 RST4676 distance=96' 20531-0450 GWP3010 distance=96' 20494-0235 WRH 14 distance=99' 20405-0349 RST4674 distance=104' 20539-0323 RST4686 distance=109' 20514-0538 STF2729AB distance=109' 20514-0538 STF2729AC distance=109' 20514-0538 STF2729AD distance=109' 20482-0601 TOK 341 distance=115' 20489-0214 HO 142AB distance=117' 20489-0214 HO 142AC distance=117' 20425-0233 WRH 13 distance=120' 20439-0557 RST4679 distance=121' 20532-0240 BRT 508 distance=124' 20534-0227 BRT 509AB distance=136' 20532-0221 JNN 126 distance=139' 20559-0504 HJ 5514AB distance=140' 20559-0504 HJ 5514AC distance=140' 20562-0459 BRT 510 distance=142' 20556-0250 J 1713 distance=144' 20411-0558 BAR9004 distance=145' 20498-0146 TDT2566 distance=147' 20440-0631 GRV1138 distance=148' 20568-0449 LDS6420 distance=149' 20402-0222 KPP4209AB distance=151' 20450-0140 LDS 722 distance=151' 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 20473-0408 LDS4858 11 17.3
Show 20474-0359 TDT2540 63 0.6 9
Show 20481-0410 J 1710 205 8.5 10
Show 20469-0417 J 1709 216 8.3 13
Show 20456-0426 OCC9021 273 0.0 33
Show 20455-0332 AHD 29 137 20.9 46
Show 20452-0331 AHD 28 307 37.4 49
Show 20458-0454 UC 4282 AB 209 41.1 52
Show 20512-0401 UC 4308 49 15.9 59
Show 20481-0302 A 174 357 0.6 67
Show 20428-0418 UC 4265 32 50.1 69
Show 20463-0258 LDS 724 135 74.9 72
Show 20492-0302 RST4682 2 0.9 72
Show 20482-0255 TDT2549 181 2.0 74
Show 20447-0511 HJ 924 85 8.1 76
Show 20423-0344 KPP 476 141 3.9 80
Show 20468-0527 KPP 478 273 3.8 81
Show 20525-0438 TDS1106 252 1.4 83
Show 20421-0336 RST4677 122 4.4 84
Show 20417-0424 BU 267 237 1.9 86
Show 20424-0323 RST4678 349 2.8 86
Show 20418-0430 HJ 921 220 9.4 86
Show 20523-0324 CVR 876 284 10.8 87
Show 20507-0529 BRT 507 69 9.2 95
Show 20453-0239 BRT 506 277 4.1 95
Show 20419-0458 RST4676 188 0.3 96
Show 20531-0450 GWP3010 318 68.5 96
Show 20494-0235 WRH 14 193 2.2 99
Show 20405-0349 RST4674 118 5.1 104
Show 20539-0323 RST4686 104 0.4 109
Show 20514-0538 STF2729 AB 35 0.7 109
Show 20514-0538 STF2729 AC 311 74.3 109
Show 20514-0538 STF2729 AD 324 137.3 109
Show 20482-0601 TOK 341 261 391.4 115
Show 20489-0214 HO 142 AB 8 1.0 117
Show 20489-0214 HO 142 AC 290 21.3 117
Show 20425-0233 WRH 13 101 1.8 120
Show 20439-0557 RST4679 356 0.3 121
Show 20532-0240 BRT 508 208 8.2 124
Show 20534-0227 BRT 509 AB 127 5.0 136
Show 20532-0221 JNN 126 327 0.1 139
Show 20559-0504 HJ 5514 AB 113 19.5 140
Show 20559-0504 HJ 5514 AC 4 7.6 140
Show 20562-0459 BRT 510 314 4.8 142
Show 20556-0250 J 1713 327 9.0 144
Show 20411-0558 BAR9004 266 3.2 145
Show 20498-0146 TDT2566 247 0.8 147
Show 20440-0631 GRV1138 50 33.2 148
Show 20568-0449 LDS6420 309 15.1 149
Show 20402-0222 KPP4209 AB 250 2.2 151
Show 20450-0140 LDS 722 266 25.1 151

 
 
WDS 20473-0408 : COMPONENTS
 
 
  A
B pa=11.0°
sep=17.31"
 
 
20473-0408 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204719.75-040747.5 Mag 16.2 Spectral class DA5 (white dwarf)
PmRA -76.00 PmDE -195.0
 
 
20473-0408 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204719.97-040730.5 Mag 16.71 Spectral class M0V: (red)
PmRA -76.00 PmDE -195.0 Calc delta mag 0.51 Calc coord yes