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Current system
20539-3658
B 507
HD 198775


Nearby doubles
17' : 20542-3714
BRT1815

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NSN 489

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B 2488

65' : 20584-3735
SKF1251

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HJ 5236

71' : 20595-3718
JSP 820

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SEE 429

78' : 20478-3636
LWR 17

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TDT2573

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WSP 133AB

94' : 20562-3828
TDT2645AB

97' : 20501-3534
HDS2969

97' : 20532-3521
BRT1814

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TOI 154

99' : 20518-3523
KPP1661

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B 2894

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RST3270

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HJ 5216

110' : 20503-3839
B 503

110' : 20448-3653
UC 4278

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B 2892



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

20539-3658 B 507 (HD 198775)

 
 
20h 53m 53.49s -36° 58' 13.8" P.A. 215.00 sep 0.5 mag 9.34,9.72 Sp A9V
 
 
Coord 2000 20539-3658 Discov num B   507 Comp Coord arcsec 2000 20 53 53.49 -36 58 13.8
Date first 1927 Date last 2008 Obs 6
Pa first 245 Pa last 214.6 P.A. Now (θ) 214.6°
Sep first 0.5 Sep last 0.519 Sep. Now (ρ) 0.519"
Mag pri 9.34 Mag sec 9.72 delta mag (ΔM) 0.38 Spectral class A9V (white)
Pri motion ra +010 Sec motion ra +010
Pri motion dec -019 Sec motion dec -019
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 198775 Constellation Microscopium Tycho2 7470-00389-1 Gaia DR2 6778486097157695360
HD 198775
 
 
WDS 20539-3658 B 507 (HD 198775) : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20539-3658 B 507 1991 5 230 0.4 9.34 9.72 A9V 205353.49-365813.8
20539-3658 B 507 2008 6 215 0.5 9.34 9.72 A9V 205353.49-365813.8

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

 
 
WDS 20539-3658 B 507 (HD 198775) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20539-3658 B 507 (HD 198775) : MEASURES
 
 
No records found.

 
 
WDS 20539-3658 (HD 198775) : VIRTUAL EYEPIECE
 
 

20539-3658 B 507A mag 9.34 Sp A9V 20539-3658 B 507B sep 0.5 P.A. 208.90 mag 9.72 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20539-3658 (HD 198775) : ALADIN DSS IMAGE @ 20h 53m 53.49s -36° 58' 13.8"
 
 
 
 
WDS 20539-3658 B 507 (HD 198775) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20539-3658 B 507 distance=0' 20542-3714 BRT1815 distance=17' 20506-3645 B 2893 distance=42' 20516-3618 B 998 distance=49' 20502-3719 BRT1813 distance=50' 20582-3711 WIS 345 distance=54' 20570-3748 NSN 489 distance=62' 20576-3745 B 2488 distance=65' 20584-3735 SKF1251 distance=65' 20579-3743 HJ 5236 distance=66' 20595-3718 JSP 820 distance=71' 20521-3810 SEE 429 distance=75' 20478-3636 LWR 17 distance=78' 20506-3545 TDT2573 distance=83' 20583-3548 WSP 133AB distance=89' 20583-3548 WSP 133AC distance=89' 20583-3548 WSP 133AD distance=89' 20583-3548 WSP 133AE distance=89' 20562-3828 TDT2645AB distance=94' 20501-3534 HDS2969 distance=97' 20532-3521 BRT1814 distance=97' 20530-3836 TOI 154 distance=98' 20518-3523 KPP1661 distance=99' 20571-3526 B 510 distance=101' 20593-3820 B 2894 distance=104' 20521-3517 RST3270 distance=105' 20457-3736 HJ 5216 distance=106' 20503-3839 B 503 distance=110' 20448-3653 UC 4278 distance=110' 20480-3523 B 2892 distance=119' 21034-3748 TDT2717 distance=124' 20442-3607 UC 4273 distance=128' 20525-3451 NSN 490 distance=129' 21007-3518 BU 765 distance=130' 20576-3908 WG 263 distance=138' 20593-3902 WG 264 distance=139' 21012-3511 TOK 344AB distance=140' 21012-3511 TOK 344Aa,Ab distance=140' 20574-3913 TDT2658 distance=141' 20563-3916 TDT2646 distance=141' 20598-3452 TDT2682 distance=146' 21030-3838 UC 4365 distance=147' 20518-3434 B 504 distance=147' 21029-3839 KPP4221CD distance=148' 20575-3435 BRT1816 distance=151' 20497-3921 B 502 distance=151' 20452-3510 SEE 428 distance=152' 20436-3532 HJ 5215 distance=152' 20521-3428 B 999 distance=153' 21068-3631 I 301 distance=158' 20437-3509 KPP 941 distance=165' 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 20539-3658 B 507 215 0.5 0
Show 20542-3714 BRT1815 207 4.2 17
Show 20506-3645 B 2893 297 9.7 42
Show 20516-3618 B 998 288 0.5 49
Show 20502-3719 BRT1813 296 5.4 50
Show 20582-3711 WIS 345 7 35.3 54
Show 20570-3748 NSN 489 348 2.7 62
Show 20576-3745 B 2488 226 2.4 65
Show 20584-3735 SKF1251 217 148.1 65
Show 20579-3743 HJ 5236 308 5.9 66
Show 20595-3718 JSP 820 247 1.4 71
Show 20521-3810 SEE 429 179 3.4 75
Show 20478-3636 LWR 17 20 9.0 78
Show 20506-3545 TDT2573 74 0.4 83
Show 20583-3548 WSP 133 AB 212 2.4 89
Show 20583-3548 WSP 133 AC 158 16.3 89
Show 20583-3548 WSP 133 AD 339 16.4 89
Show 20583-3548 WSP 133 AE 354 16.6 89
Show 20562-3828 TDT2645 AB 241 0.7 94
Show 20501-3534 HDS2969 174 0.1 97
Show 20532-3521 BRT1814 258 4.0 97
Show 20530-3836 TOI 154 203 0.2 98
Show 20518-3523 KPP1661 42 12.8 99
Show 20571-3526 B 510 327 3.4 101
Show 20593-3820 B 2894 311 11.4 104
Show 20521-3517 RST3270 338 2.5 105
Show 20457-3736 HJ 5216 22 15.6 106
Show 20503-3839 B 503 116 2.5 110
Show 20448-3653 UC 4278 250 22.0 110
Show 20480-3523 B 2892 104 8.1 119
Show 21034-3748 TDT2717 255 0.7 124
Show 20442-3607 UC 4273 22 17.6 128
Show 20525-3451 NSN 490 73 2.0 129
Show 21007-3518 BU 765 72 0.8 130
Show 20576-3908 WG 263 34 7.1 138
Show 20593-3902 WG 264 82 5.3 139
Show 21012-3511 TOK 344 AB 61 186.0 140
Show 21012-3511 TOK 344 Aa,Ab 351 0.1 140
Show 20574-3913 TDT2658 30 0.5 141
Show 20563-3916 TDT2646 242 1.6 141
Show 20598-3452 TDT2682 151 2.2 146
Show 21030-3838 UC 4365 207 99.7 147
Show 20518-3434 B 504 38 2.3 147
Show 21029-3839 KPP4221 CD 265 4.5 148
Show 20575-3435 BRT1816 180 3.7 151
Show 20497-3921 B 502 113 1.3 151
Show 20452-3510 SEE 428 188 4.4 152
Show 20436-3532 HJ 5215 183 22.8 152
Show 20521-3428 B 999 328 1.3 153
Show 21068-3631 I 301 335 3.7 158
Show 20437-3509 KPP 941 156 7.7 165

 
 
WDS 20539-3658 : COMPONENTS
 
 
  A
B pa=208.9°
sep=0.49"
 
 
20539-3658 A
 
 
Name HD 198775 Coord arcsec 2000 205353.49-365813.8 Mag 9.34 Spectral class A9V (white)
PmRA 10.00 PmDE -19.0 Tycho2 7470-00389-1 HD 198775
Tycho2
Tycho2 7470-00389-1 Pflag RAmdeg 313.47283670 DEmdeg -36.97051466
PmRA 9.5 PmDE -19.2 E RAmdeg 9 E DEmdeg 10
E pmRA 1.4 E pmDE 1.4 EpRAm 1990.37 EpDEm 1989.98
Num 8 Q RAmdeg 0.8 Q DEmdeg 1.2 Q pmRA 0.9
Q pmDE 1.3 BTmag 9.151 E BTmag 0.020 VTmag 8.847
E VTmag 0.017 Prox 999 TYC T HIP
CCDM RAdeg 313.47280917 DEdeg -36.97046889 EpRA 1990 1.60
EpDE 1990 1.46 E RAdeg 8.8 E DEdeg 10.0 Posflg
Corr -0.1
CCDM
Ccdm 20539-3658 RComp Comp A Note1
Note2 Discov num DRAs -0.62 DDEs -12.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.1 Sp A5 PmNote
PmRA PmDE Dm number -3713978 Cat1 CD
Name2 Cat2 HD 198775 M HD
ADS BDS M ADS BDS N IDS IDS 20475S3721A
HIC
 
 
20539-3658 B
 
 
Coord arcsec 2000 205353.47-365814.2 Mag 9.72 PmRA 10.00 PmDE -19.0
Calc delta mag 0.38 Calc coord yes
CCDM
Ccdm 20539-3658 RComp Comp B Note1
Note2 Discov num B 507 DRAs DDEs
R dRAs Year 1927 Theta 241 Rho 0.5
Obs 3 Vmag 10.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20475S3721B
HIC