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Doubles in session


Current system
20533-2821
COO 290
HD 198750


Nearby doubles
42' : 20507-2759
HDS2971

48' : 20498-2829
LDS 725

53' : 20542-2730
B 509AB

56' : 20572-2758
KPP 575

65' : 20487-2804
FIN 8

73' : 20543-2710
RST2168

74' : 20501-2722
HJ 5226

77' : 20530-2937
B 506

80' : 20521-2938
FIN 5

81' : 20479-2745
STN 53

86' : 20516-2943
DAM 668

87' : 20535-2654
RST2166

89' : 20517-2947
RST2164

92' : 20464-2834
RST2159

96' : 20575-2704
B 512

99' : 20461-2843
RST2158

100' : 20458-2834
RST2157

105' : 20543-2638
RSS 554

105' : 21012-2810
B 514

111' : 20552-3008
HDS2980

111' : 20556-2635
UC 4330

114' : 21015-2748
HDS2996

119' : 21013-2725
RST2171

120' : 20535-2622
RST2167

127' : 20447-2917
UC 4277

128' : 20465-2652
HJ 5220



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.

20533-2821 COO 290 (HD 198750)

 
 
20h 53m 19.52s -28° 21' 04.8" P.A. 248.00 sep 7.3 mag 10.21,10.47 Sp B+F6/7V
 
 
Coord 2000 20533-2821 Discov num COO 290 Comp Coord arcsec 2000 20 53 19.52 -28 21 04.8
Date first 1913 Date last 2016 Obs 12
Pa first 248 Pa last 247.8 P.A. Now (θ) 247.8°
Sep first 8.2 Sep last 7.341 Sep. Now (ρ) 7.341"
Mag pri 10.21 Mag sec 10.47 delta mag (ΔM) 0.26 Spectral class B+F6/7V (blue-white/yellow-white)
Pri motion ra -002 Sec motion ra -026
Pri motion dec -015 Sec motion dec -022
Notes U (Proper motion indicates non-physical)
rPM=0.734
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 198750 Constellation Microscopium SAO 189805 Tycho2 6934-00071-1
Gaia DR2 6801583434847143808 HD 198750
 
 
WDS 20533-2821 COO 290 (HD 198750) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
CoO1927A T - Cordoba Obs. 1927sdsc.book......
CoO1927A cited in SDS (Southern Double Star Catalog), 1927
CoO9999 T - Cordoba Obs. ...................
CoO9999 Unpublished, manuscript or reference not found.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
20533-2821 COO 290 1998 8 248 7.4 10.21 10.47 B F6/7V LD 205319.52-282104.8
20533-2821 COO 290 1999 9 248 7.3 10.21 10.47 B F6/7V LD 205319.52-282104.8
20533-2821 COO 290 2010 10 248 6.8 10.21 10.47 B+F6/7V L 205319.52-282104.8
20533-2821 COO 290 2015 10 248 7.3 10.21 10.47 B+F6/7V L 205319.52-282104.8
20533-2821 COO 290 2016 12 248 7.3 10.21 10.47 B+F6/7V U 205319.52-282104.8

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

 
 
WDS 20533-2821 COO 290 (HD 198750) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20533-2821 COO 290 (HD 198750) : MEASURES
 
 
No records found.

 
 
WDS 20533-2821 (HD 198750) : VIRTUAL EYEPIECE
 
 

20533-2821 COO 290A mag 10.21 Sp B 20533-2821 COO 290B sep 6.6 P.A. 245.10 mag 10.47 Sp F6/7V virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20533-2821 (HD 198750) : ALADIN DSS IMAGE @ 20h 53m 19.52s -28° 21' 04.8"
 
 
 
 
WDS 20533-2821 COO 290 (HD 198750) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20533-2821 COO 290 distance=1' 20507-2759 HDS2971 distance=42' 20498-2829 LDS 725 distance=48' 20542-2730 B 509AB distance=53' 20542-2730 B 509AC distance=53' 20572-2758 KPP 575 distance=56' 20487-2804 FIN 8 distance=65' 20516-2927 TOK 863Aa,Ab distance=70' 20543-2710 RST2168 distance=73' 20501-2722 HJ 5226 distance=74' 20530-2937 B 506 distance=77' 20521-2938 FIN 5 distance=80' 20479-2745 STN 53 distance=81' 20516-2943 DAM 668 distance=86' 20535-2654 RST2166 distance=87' 20517-2947 RST2164 distance=89' 20464-2834 RST2159 distance=92' 20575-2704 B 512 distance=96' 20461-2843 RST2158 distance=99' 20458-2834 RST2157 distance=100' 20543-2638 RSS 554 distance=105' 21012-2810 B 514 distance=105' 20552-3008 HDS2980 distance=111' 20556-2635 UC 4330 distance=111' 21015-2748 HDS2996 distance=114' 21013-2725 RST2171 distance=119' 20535-2622 RST2167 distance=120' 20447-2917 UC 4277 distance=127' 20465-2652 HJ 5220 distance=128' 21011-2944 SKF2097 distance=131' 20456-2653 B 2891 distance=136' 20431-2838 RST2154 distance=136' 21032-2744 SEE 435 distance=136' 21035-2842 UC 4368 distance=136' 20430-2846 SEE 425 distance=138' 20473-2625 BU 153 distance=141' 20427-2855 RST2153 distance=145' 20519-3047 UC 4313 distance=147' 20433-2925 SKF2089 distance=147' 20594-3031 HDS2992 distance=153' 20500-3049 RST2161 distance=154' 21032-2945 BRT3095 distance=155' 20516-2548 RST2165 distance=156' 20584-3043 JSP 821 distance=156' 20441-3000 SKF1248 distance=157' 20529-2541 HTS 14AB distance=160' 20529-2541 HTS 14AC distance=160' 20529-2541 HTS 14AD distance=160' 20529-2541 HTS 14AE distance=160' 20529-2541 HTS 14AF distance=160' 20503-3058 LDS5911 distance=163' 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 20533-2821 COO 290 248 7.3 1
Show 20507-2759 HDS2971 49 0.2 42
Show 20498-2829 LDS 725 271 21.8 48
Show 20542-2730 B 509 AB 126 7.9 53
Show 20542-2730 B 509 AC 69 2.5 53
Show 20572-2758 KPP 575 112 5.4 56
Show 20487-2804 FIN 8 189 2.5 65
Show 20516-2927 TOK 863 Aa,Ab 173 1.5 70
Show 20543-2710 RST2168 25 0.6 73
Show 20501-2722 HJ 5226 67 18.7 74
Show 20530-2937 B 506 317 3.2 77
Show 20521-2938 FIN 5 71 2.0 80
Show 20479-2745 STN 53 175 18.1 81
Show 20516-2943 DAM 668 309 11.2 86
Show 20535-2654 RST2166 309 0.6 87
Show 20517-2947 RST2164 318 1.0 89
Show 20464-2834 RST2159 316 3.6 92
Show 20575-2704 B 512 355 0.5 96
Show 20461-2843 RST2158 278 1.4 99
Show 20458-2834 RST2157 170 0.7 100
Show 20543-2638 RSS 554 207 16.4 105
Show 21012-2810 B 514 262 12.6 105
Show 20552-3008 HDS2980 334 0.1 111
Show 20556-2635 UC 4330 232 43.6 111
Show 21015-2748 HDS2996 109 0.5 114
Show 21013-2725 RST2171 168 0.3 119
Show 20535-2622 RST2167 8 1.6 120
Show 20447-2917 UC 4277 18 16.5 127
Show 20465-2652 HJ 5220 354 18.1 128
Show 21011-2944 SKF2097 152 87.6 131
Show 20456-2653 B 2891 253 5.0 136
Show 20431-2838 RST2154 279 0.8 136
Show 21032-2744 SEE 435 295 0.3 136
Show 21035-2842 UC 4368 74 20.4 136
Show 20430-2846 SEE 425 226 7.9 138
Show 20473-2625 BU 153 251 1.9 141
Show 20427-2855 RST2153 42 0.2 145
Show 20519-3047 UC 4313 233 12.5 147
Show 20433-2925 SKF2089 284 17.7 147
Show 20594-3031 HDS2992 242 0.1 153
Show 20500-3049 RST2161 271 2.6 154
Show 21032-2945 BRT3095 104 4.7 155
Show 20516-2548 RST2165 134 1.9 156
Show 20584-3043 JSP 821 121 2.0 156
Show 20441-3000 SKF1248 55 6.4 157
Show 20529-2541 HTS 14 AB 86 7.8 160
Show 20529-2541 HTS 14 AC 66 10.4 160
Show 20529-2541 HTS 14 AD 263 12.3 160
Show 20529-2541 HTS 14 AE 216 14.9 160
Show 20529-2541 HTS 14 AF 73 18.3 160
Show 20503-3058 LDS5911 78 118.0 163

 
 
WDS 20533-2821 : COMPONENTS
 
 
  A
B pa=245.1°
sep=6.59"
 
 
20533-2821 A
 
 
Componente originario normalizzato AB Name HD 198750 Coord arcsec 2000 205319.52-282104.8 Mag 10.21
Spectral class B (blue-white) PmRA -2.00 PmDE -15.0 SAO 189805
Tycho2 6934-00071-1 HD 198750 DM CD-2816968
Tycho2
Tycho2 6934-00071-1 Pflag RAmdeg 313.33132755 DEmdeg -28.35133334
PmRA -20.3 PmDE -26.2 E RAmdeg 21 E DEmdeg 30
E pmRA 2.7 E pmDE 2.4 EpRAm 1990.98 EpDEm 1989.35
Num 3 Q RAmdeg 0.5 Q DEmdeg 0.5 Q pmRA 0.5
Q pmDE 0.5 BTmag 10.944 E BTmag 0.048 VTmag 10.214
E VTmag 0.036 Prox 74 TYC T HIP
CCDM RAdeg 313.33138056 DEdeg -28.35127028 EpRA 1990 1.75
EpDE 1990 1.34 E RAdeg 21.2 E DEdeg 30.3 Posflg
Corr -0.3
SAO
SAO 189805 DelFlag RA1950 PmRA1950 -0.0003
DE1950 PmDE1950 -0.004 Vmag 9.2 SpType F8
Double code Source 24 CatNum 13752 DM CD-2816968
DMcomp A BDsup HD 198750 M HD 1
GC RA1950rad 5.45555827 DE1950rad -0.49812978 PmRA2000 -0.0004
PmDE2000 -0.007
CCDM
Ccdm 20533-2821 RComp Comp A Note1
Note2 Discov num DRAs 1.52 DDEs -3.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.9 Sp F8 PmNote *
PmRA -4 PmDE -4 Dm number -2816968 Cat1 CD
Name2 189805 Cat2 SAO HD 198750 M HD
ADS BDS M ADS BDS N IDS IDS 20473S2844A
HIC
 
 
20533-2821 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205319.07-282107.6 Mag 10.47 Spectral class F6/7V (yellow-white)
PmRA -26.00 PmDE -22.0 Tycho2 6934-00071-2 Calc delta mag 0.26
Calc coord yes
Tycho2
Tycho2 6934-00071-2 Pflag RAmdeg 313.32919895 DEmdeg -28.35210752
PmRA -6.1 PmDE -19.6 E RAmdeg 24 E DEmdeg 34
E pmRA 2.7 E pmDE 2.4 EpRAm 1990.76 EpDEm 1988.65
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.3
Q pmDE 0.8 BTmag 11.041 E BTmag 0.051 VTmag 10.465
E VTmag 0.043 Prox 74 TYC T HIP
CCDM RAdeg 313.32921472 DEdeg -28.35206028 EpRA 1990 1.76
EpDE 1990 1.33 E RAdeg 23.6 E DEdeg 35.4 Posflg
Corr -0.3
CCDM
Ccdm 20533-2821 RComp Comp B Note1
Note2 Discov num COO DRAs 0.83 DDEs -8.4
R dRAs 10 Year 1935 Theta 248 Rho 7.4
Obs 1 Vmag 10.0 Sp F8 PmNote *
PmRA -36 PmDE -24 Dm number Cat1
Name2 189804 Cat2 SAO HD M HD
ADS BDS M ADS BDS N IDS IDS 20473S2844B
HIC