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Current system
21101+0118
HDO 318
HD 201508


Nearby doubles
22' : 21110+0102
A 2287

26' : 21118+0121
UC 4400

29' : 21119+0126
BAL1581

30' : 21086+0059
BAL1224

32' : 21093+0048
BAL1225

33' : 21089-0052
BAL 619

37' : 21104-0042
BAL 620

37' : 21119-0053
UC 4401

39' : 21099+0156
GWP3037AB

40' : 21111+0041
SKF1774

43' : 21084+0151
BAL1580

49' : 21126+0149
BAL1583

51' : 21069+0131
BAL1579

52' : 21127-0045
J 1403

54' : 21119+0032
ITF 212

54' : 21129-0045
SLW1231

57' : 21125+0202
BAL1582

63' : 21116+0217
LDS4868

63' : 21103-0016
LDS4866

68' : 21143-0052
LYS 38

68' : 21089+0013
BU 837

70' : 21113+0011
GWP3040

71' : 21073-0021
BAL 930

72' : 21059+0152
YSC 71

72' : 21091+0227
BAL2048

72' : 21133-0024
NSN 73



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21101+0118 HDO 318 (HD 201508)

 
 
21h 10m 06.52s +01° 17' 47.2" P.A. 313.00 sep 1.2 mag 9.58,9.81 Sp A3
 
 
Coord 2000 21101+0118 Discov num HDO 318 Comp Coord arcsec 2000 21 10 06.52 +01 17 47.2
Date first 1877 Date last 2016 Obs 21
Pa first 318 Pa last 312.7 P.A. Now (θ) 312.7°
Sep first 0.7 Sep last 1.177 Sep. Now (ρ) 1.177"
Mag pri 9.58 Mag sec 9.81 delta mag (ΔM) 0.23 Spectral class A3 (white)
Pri motion ra +015 Sec motion ra +015
Pri motion dec -009 Sec motion dec -009
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 201508 Constellation Aquarius SAO 126589 Tycho2 0527-00929-1
Gaia DR2 2690683353224648064 HD 201508
 
 
WDS 21101+0118 HDO 318 (HD 201508) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HdO1882a Mb - Harvard Obs. 1882AnHar..13...17.
HdO1882a Harvard Ann. 13, 17, 1882
HdO1882b Ma j Harvard Obs. (measure by Alden, G.I.) 1882AnHar..13...17.
HdO1882b Harvard Ann. 13, 17, 1882
HdO1882c Ma - Harvard Obs. (measure by Davis, W.M.) 1882AnHar..13...17.
HdO1882c Harvard Ann. 13, 17, 1882
HdO1906A Ma - Harvard Obs. 1906QB821.B972.....
HdO1906A cited in BDS (Burnham Double Star Cat., 1906)
HdO9999 Ma - Harvard Obs. ...................
HdO9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21101+0118 HDO 318 2000 18 313 1.0 9.58 9.81 A3 211006.52+011747.2
21101+0118 HDO 318 2008 19 313 1.1 9.58 9.81 A3 211006.52+011747.2
21101+0118 HDO 318 2016 20 314 1.1 9.58 9.81 A3 211006.52+011747.2

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

 
 
WDS 21101+0118 HDO 318 (HD 201508) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21101+0118 HDO 318 (HD 201508) : MEASURES
 
 
No records found.

 
 
WDS 21101+0118 (HD 201508) : VIRTUAL EYEPIECE
 
 

21101+0118 HDO 318A mag 9.58 Sp A3 21101+0118 HDO 318B sep 1.2 P.A. 312.70 mag 9.81 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21101+0118 (HD 201508) : ALADIN DSS IMAGE @ 21h 10m 06.52s +01° 17' 47.2"
 
 
 
 
WDS 21101+0118 HDO 318 (HD 201508) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21101+0118 HDO 318 distance=0' 21110+0102 A 2287 distance=22' 21118+0121 UC 4400 distance=26' 21119+0126 BAL1581 distance=29' 21086+0059 BAL1224 distance=30' 21093+0048 BAL1225 distance=32' 21089-0052 BAL 619 distance=33' 21104-0042 BAL 620 distance=37' 21119-0053 UC 4401 distance=37' 21099+0156 GWP3037AB distance=39' 21099+0156 GWP3038AC distance=39' 21111+0041 SKF1774 distance=40' 21084+0151 BAL1580 distance=43' 21126+0149 BAL1583 distance=49' 21069+0131 BAL1579 distance=51' 21127-0045 J 1403 distance=52' 21119+0032 ITF 212 distance=54' 21129-0045 SLW1231 distance=54' 21125+0202 BAL1582 distance=57' 21116+0217 LDS4868 distance=63' 21103-0016 LDS4866 distance=63' 21143-0052 LYS 38 distance=68' 21089+0013 BU 837 distance=68' 21113+0011 GWP3040 distance=70' 21073-0021 BAL 930 distance=71' 21059+0152 YSC 71 distance=72' 21091+0227 BAL2048 distance=72' 21133-0024 NSN 73 distance=72' 21147-0050 LYS 39FG distance=73' 21147-0050 STF2775DE distance=73' 21147-0050 A 883AB distance=75' 21147-0050 LYS 39AF distance=75' 21147-0050 LYS 39AH distance=75' 21147-0050 STF2775AB,C distance=75' 21147-0050 STF2775AB,D distance=75' 21067+0212 SLN 88 distance=75' 21069-0020 J 1718 distance=76' 21075-0010 STF2755 distance=79' 21053+0044 HDS3007 distance=80' 21123-0002 KPP1761 distance=83' 21105+0241 SKF1594 distance=84' 21061+0217 RST5476 distance=85' 21155+0037 ITF 234 distance=91' 21039+0106 BAL1223 distance=94' 21054+0221 KPP1782 distance=96' 21161+0045 SLN 40 distance=96' 21163+0052 BAL1226 distance=97' 21165-0054 TDT2876 distance=99' 21130+0248 BU 1303 distance=101' 21056+0233 BAL2045 distance=103' 21166-0037 HDS3029 distance=106' 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 21101+0118 HDO 318 313 1.2
Show 21110+0102 A 2287 38 0.1 22
Show 21118+0121 UC 4400 189 33.5 26
Show 21119+0126 BAL1581 9 17.0 29
Show 21086+0059 BAL1224 77 11.2 30
Show 21093+0048 BAL1225 215 18.7 32
Show 21089-0052 BAL 619 127 15.9 33
Show 21104-0042 BAL 620 314 2.9 37
Show 21119-0053 UC 4401 234 25.6 37
Show 21099+0156 GWP3037 AB 180 76.0 39
Show 21099+0156 GWP3038 AC 1 111.6 39
Show 21111+0041 SKF1774 308 1.2 40
Show 21084+0151 BAL1580 224 4.4 43
Show 21126+0149 BAL1583 6 8.3 49
Show 21069+0131 BAL1579 248 9.2 51
Show 21127-0045 J 1403 344 4.0 52
Show 21119+0032 ITF 212 176 2.6 54
Show 21129-0045 SLW1231 211 14.0 54
Show 21125+0202 BAL1582 64 12.1 57
Show 21116+0217 LDS4868 106 22.2 63
Show 21103-0016 LDS4866 245 1.8 63
Show 21143-0052 LYS 38 23 11.8 68
Show 21089+0013 BU 837 181 3.4 68
Show 21113+0011 GWP3040 290 12.7 70
Show 21073-0021 BAL 930 9 3.4 71
Show 21059+0152 YSC 71 263 1.0 72
Show 21091+0227 BAL2048 95 6.7 72
Show 21133-0024 NSN 73 265 7.9 72
Show 21147-0050 LYS 39 FG 11 20.0 73
Show 21147-0050 STF2775 DE 125 74.5 73
Show 21147-0050 A 883 AB 264 0.1 75
Show 21147-0050 LYS 39 AF 297 185.0 75
Show 21147-0050 LYS 39 AH 126 262.6 75
Show 21147-0050 STF2775 AB,C 178 21.3 75
Show 21147-0050 STF2775 AB,D 200 170.3 75
Show 21067+0212 SLN 88 230 4.1 75
Show 21069-0020 J 1718 353 7.3 76
Show 21075-0010 STF2755 79 25.4 79
Show 21053+0044 HDS3007 281 0.1 80
Show 21123-0002 KPP1761 90 13.6 83
Show 21105+0241 SKF1594 288 3.3 84
Show 21061+0217 RST5476 149 3.3 85
Show 21155+0037 ITF 234 129 2.9 91
Show 21039+0106 BAL1223 157 11.3 94
Show 21054+0221 KPP1782 210 13.8 96
Show 21161+0045 SLN 40 207 2.0 96
Show 21163+0052 BAL1226 199 3.9 97
Show 21165-0054 TDT2876 105 0.6 99
Show 21130+0248 BU 1303 234 4.2 101
Show 21056+0233 BAL2045 33 7.2 103
Show 21166-0037 HDS3029 120 0.6 106

 
 
WDS 21101+0118 : COMPONENTS
 
 
  A
B pa=312.7°
sep=1.18"
 
 
21101+0118 A
 
 
Componente originario normalizzato AB Name HD 201508 Coord arcsec 2000 211006.52+011747.2 Mag 9.58
Spectral class A3 (white) PmRA 15.00 PmDE -9.0 SAO 126589
Tycho2 0527-00929-1 HD 201508 DM BD+00 4674
Tycho2
Tycho2 0527-00929-1 Pflag P RAmdeg 317.52717309 DEmdeg 1.29645316
PmRA 14.8 PmDE -9.4 E RAmdeg 17 E DEmdeg 19
E pmRA 1.4 E pmDE 1.3 EpRAm 1989.76 EpDEm 1989.17
Num 6 Q RAmdeg 1.3 Q DEmdeg 0.7 Q pmRA 1.3
Q pmDE 0.8 BTmag 9.967 E BTmag 0.029 VTmag 9.577
E VTmag 0.029 Prox 10 TYC T HIP
CCDM RAdeg 317.52723056 DEdeg 1.29639139 EpRA 1990 1.79
EpDE 1990 1.83 E RAdeg 16.9 E DEdeg 18.6 Posflg D
Corr -0.1
SAO
SAO 126589 DelFlag RA1950 PmRA1950 0.0006
DE1950 PmDE1950 -0.01 Vmag 8.5 SpType A3
Double code Source 31 CatNum 5381 DM BD+00 4674
DMcomp BDsup HD 201508 M HD 0
GC RA1950rad 5.53077528 DE1950rad 0.01906244 PmRA2000 0.0008
PmDE2000 -0.014
CCDM
Ccdm 21101+0118 RComp Comp A Note1
Note2 Discov num DRAs 0.50 DDEs -12.7
R dRAs 10 Year Theta Rho
Obs 2 Vmag 10.0 Sp A3 PmNote *
PmRA 21 PmDE -6 Dm number +00 4674 Cat1 BD
Name2 +01 2559 Cat2 AGK2/3 HD 201508 M HD
ADS BDS A14697 M ADS BDS N IDS IDS 21050N0053A
HIC
 
 
21101+0118 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 211006.46+011748.0 Mag 9.81 PmRA 15.00
PmDE -9.0 Tycho2 0527-00929-2 Calc delta mag 0.23 Calc coord yes
Tycho2
Tycho2 0527-00929-2 Pflag P RAmdeg 317.52717309 DEmdeg 1.29645316
PmRA 14.8 PmDE -9.4 E RAmdeg 17 E DEmdeg 19
E pmRA 1.4 E pmDE 1.3 EpRAm 1989.76 EpDEm 1989.17
Num 6 Q RAmdeg 1.3 Q DEmdeg 0.7 Q pmRA 1.3
Q pmDE 0.8 BTmag 10.141 E BTmag 0.033 VTmag 9.806
E VTmag 0.034 Prox 10 TYC T HIP
CCDM RAdeg 317.52701694 DEdeg 1.29658639 EpRA 1990 1.79
EpDE 1990 1.83 E RAdeg 19.9 E DEdeg 21.8 Posflg D
Corr -0.1
CCDM
Ccdm 21101+0118 RComp Comp B Note1
Note2 Discov num HDO DRAs DDEs
R dRAs Year 1953 Theta 134 Rho 1.0
Obs 12 Vmag 10.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14697 M ADS BDS N IDS IDS 21050N0053B
HIC