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Current system
20479-2745
STN 53
HD 197956


Nearby doubles
22' : 20487-2804
FIN 8

38' : 20501-2722
HJ 5226

40' : 20507-2759
HDS2971

51' : 20498-2829
LDS 725

53' : 20464-2834
RST2159

57' : 20458-2834
RST2157

57' : 20465-2652
HJ 5220

61' : 20456-2653
B 2891

65' : 20461-2843
RST2158

81' : 20473-2625
BU 153

81' : 20533-2821
COO 290

82' : 20431-2838
RST2154

85' : 20542-2730
B 509AB

89' : 20430-2846
SEE 425

90' : 20535-2654
RST2166

92' : 20543-2710
RST2168

98' : 20427-2855
RST2153

101' : 20447-2917
UC 4277

108' : 20424-2626
UC 4263

110' : 20543-2638
RSS 554

113' : 20535-2622
RST2167

113' : 20464-2554
UC 4284

114' : 20396-2717
RST2150

118' : 20433-2925
SKF2089

118' : 20406-2639
CHR 186

119' : 20396-2704
HJ 5210



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

20479-2745 STN 53 (HD 197956)

 
 
20h 47m 52.82s -27° 45' 00.8" P.A. 175.00 sep 18.1 mag 7.70,10.73 Sp K1II/III dist. 411.52 pc (1342.38 l.y.)
 
 
Coord 2000 20479-2745 Discov num STN  53 Comp Coord arcsec 2000 20 47 52.82 -27 45 00.8
Date first 1877 Date last 2016 Obs 13
Pa first 177 Pa last 174.9 P.A. Now (θ) 174.9°
Sep first 17.4 Sep last 18.12 Sep. Now (ρ) 18.12"
Mag pri 7.70 Mag sec 10.73 delta mag (ΔM) 3.03 Spectral class K1II/III (yellow-orange)
Pri motion ra +020 Sec motion ra +035
Pri motion dec +029 Sec motion dec +047
Notes Z (Parallax indicates components are physical)
rPM=0.4
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 197956 Constellation Microscopium SAO 189701 HIP 102641
Tycho2 6930-00995-1 Gaia DR2 6795891125710265088 HD 197956 GC 28973
CD CD-2816918 Distance 411.52 Distance ly 1342.38
 
 
WDS 20479-2745 STN 53 (HD 197956) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Stn1877 Ma j Stone, O. 1877PCinO...3....1S
Stn1877 Pub. Cincinnati Obs. #3, 1877
Stn1878 Ma - Stone, O. 1878PCinO...4....1.
Stn1878 Pub. Cincinnati Obs. #4, 1878
Stn1879 Ma j Stone, O. 1879PCinO...5....1S
Stn1879 Pub. Cincinnati Obs. #5, 1879
Stn1880A Ma - Stone, O. 1880Obs.....3..314G
Stn1880A cited by Gledhill (Obs 3, 314, 1880)
Stn1882 Ma - Stone, O. 1882PCinO...6....1S
Stn1882 Pub. Cincinnati Obs. #6, 1882
Stn1890 Ma j Stone, O. 1890PCinO..10....1.
Stn1890 Pub. Cincinnati Obs. #10, 1890
Stn1906A Ma - Stone, O. 1906MmRAS..56....1L
Stn1906A cited by Lewis (MemRAS 56, 1, 1906)
Stn1932A Ma - Stone, O. 1932QB821.A43......
Stn1932A cited in ADS (Aitken Double Star Cat.), 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20479-2745 STN 53 2004 8 177 17.7 7.70 10.73 K1II/III D 204752.82-274500.8
20479-2745 STN 53 2010 9 175 18.0 7.70 10.73 K1II/III D 204752.82-274500.8
20479-2745 STN 53 2016 12 175 18.1 7.70 10.73 K1II/III Z 204752.82-274500.8

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

 
 
WDS 20479-2745 STN 53 (HD 197956) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20479-2745 STN 53 (HD 197956) : MEASURES
 
 
No records found.

 
 
WDS 20479-2745 (HD 197956) : VIRTUAL EYEPIECE
 
 

20479-2745 STN 53A mag 7.7 Sp K1II/III 20479-2745 STN 53B sep 18.1 P.A. 175.50 mag 10.73 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20479-2745 (HD 197956) : ALADIN DSS IMAGE @ 20h 47m 52.82s -27° 45' 00.8"
 
 
 
 
WDS 20479-2745 STN 53 (HD 197956) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20479-2745 STN 53 distance=0' 20487-2804 FIN 8 distance=22' 20501-2722 HJ 5226 distance=38' 20507-2759 HDS2971 distance=40' 20498-2829 LDS 725 distance=51' 20464-2834 RST2159 distance=53' 20458-2834 RST2157 distance=57' 20465-2652 HJ 5220 distance=57' 20456-2653 B 2891 distance=61' 20461-2843 RST2158 distance=65' 20473-2625 BU 153 distance=81' 20533-2821 COO 290 distance=81' 20431-2838 RST2154 distance=82' 20542-2730 B 509AB distance=85' 20542-2730 B 509AC distance=85' 20430-2846 SEE 425 distance=89' 20535-2654 RST2166 distance=90' 20543-2710 RST2168 distance=92' 20427-2855 RST2153 distance=98' 20447-2917 UC 4277 distance=101' 20424-2626 UC 4263 distance=108' 20543-2638 RSS 554 distance=110' 20535-2622 RST2167 distance=113' 20464-2554 UC 4284 distance=113' 20516-2927 TOK 863Aa,Ab distance=113' 20396-2717 RST2150 distance=114' 20433-2925 SKF2089 distance=118' 20406-2639 CHR 186 distance=118' 20396-2704 HJ 5210 distance=119' 20393-2820 RST2149 distance=120' 20401-2852 SEE 423AB distance=123' 20401-2852 SEE 423BC distance=123' 20408-2626 UC 4255 distance=124' 20572-2758 KPP 575 distance=124' 20556-2635 UC 4330 distance=125' 20444-2548 RST2155 distance=126' 20521-2938 FIN 5 distance=127' 20516-2943 DAM 668 distance=128' 20516-2548 RST2165 distance=129' 20530-2937 B 506 distance=131' 20517-2947 RST2164 distance=132' 20406-2615 UC 4254 distance=134' 20575-2704 B 512 distance=136' 20529-2541 HTS 14AB distance=141' 20529-2541 HTS 14AC distance=141' 20529-2541 HTS 14AD distance=141' 20529-2541 HTS 14AE distance=141' 20529-2541 HTS 14AF distance=141' 20375-2817 BRT3093 distance=142' 20373-2717 HJ 2982 distance=143' 20441-3000 SKF1248 distance=144' 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 20479-2745 STN 53 175 18.1
Show 20487-2804 FIN 8 189 2.5 22
Show 20501-2722 HJ 5226 67 18.7 38
Show 20507-2759 HDS2971 49 0.2 40
Show 20498-2829 LDS 725 271 21.8 51
Show 20464-2834 RST2159 316 3.6 53
Show 20458-2834 RST2157 170 0.7 57
Show 20465-2652 HJ 5220 354 18.1 57
Show 20456-2653 B 2891 253 5.0 61
Show 20461-2843 RST2158 278 1.4 65
Show 20473-2625 BU 153 251 1.9 81
Show 20533-2821 COO 290 248 7.3 81
Show 20431-2838 RST2154 279 0.8 82
Show 20542-2730 B 509 AB 126 7.9 85
Show 20542-2730 B 509 AC 69 2.5 85
Show 20430-2846 SEE 425 226 7.9 89
Show 20535-2654 RST2166 309 0.6 90
Show 20543-2710 RST2168 25 0.6 92
Show 20427-2855 RST2153 42 0.2 98
Show 20447-2917 UC 4277 18 16.5 101
Show 20424-2626 UC 4263 207 22.1 108
Show 20543-2638 RSS 554 207 16.4 110
Show 20535-2622 RST2167 8 1.6 113
Show 20464-2554 UC 4284 110 12.5 113
Show 20516-2927 TOK 863 Aa,Ab 173 1.5 113
Show 20396-2717 RST2150 5 1.7 114
Show 20433-2925 SKF2089 284 17.7 118
Show 20406-2639 CHR 186 149 0.0 118
Show 20396-2704 HJ 5210 263 10.7 119
Show 20393-2820 RST2149 155 1.0 120
Show 20401-2852 SEE 423 AB 39 1.2 123
Show 20401-2852 SEE 423 BC 281 0.2 123
Show 20408-2626 UC 4255 339 13.7 124
Show 20572-2758 KPP 575 112 5.4 124
Show 20556-2635 UC 4330 232 43.6 125
Show 20444-2548 RST2155 353 1.2 126
Show 20521-2938 FIN 5 71 2.0 127
Show 20516-2943 DAM 668 309 11.2 128
Show 20516-2548 RST2165 134 1.9 129
Show 20530-2937 B 506 317 3.2 131
Show 20517-2947 RST2164 318 1.0 132
Show 20406-2615 UC 4254 225 11.1 134
Show 20575-2704 B 512 355 0.5 136
Show 20529-2541 HTS 14 AB 86 7.8 141
Show 20529-2541 HTS 14 AC 66 10.4 141
Show 20529-2541 HTS 14 AD 263 12.3 141
Show 20529-2541 HTS 14 AE 216 14.9 141
Show 20529-2541 HTS 14 AF 73 18.3 141
Show 20375-2817 BRT3093 85 3.8 142
Show 20373-2717 HJ 2982 137 15.8 143
Show 20441-3000 SKF1248 55 6.4 144

 
 
WDS 20479-2745 : COMPONENTS
 
 
  A
B pa=175.5°
sep=18.10"
 
 
20479-2745 A
 
 
Componente originario normalizzato AB Name HD 197956 Coord arcsec 2000 204752.82-274500.8 Mag 7.7
Spectral class K1II/III (yellow-orange) PmRA 20.00 PmDE 29.0 SAO 189701
HIP 102641 Tycho2 6930-00995-1 HD 197956 GC 28973
CD CD-2816918
Tycho2
Tycho2 6930-00995-1 Pflag RAmdeg 311.97010059 DEmdeg -27.75022926
PmRA 23.9 PmDE 30.4 E RAmdeg 5 E DEmdeg 7
E pmRA 1.2 E pmDE 1.3 EpRAm 1991.14 EpDEm 1990.54
Num 12 Q RAmdeg 1.2 Q DEmdeg 1.3 Q pmRA 1.2
Q pmDE 1.2 BTmag 8.910 E BTmag 0.018 VTmag 7.695
E VTmag 0.012 Prox 177 TYC T HIP 102641
CCDM A RAdeg 311.97003861 DEdeg -27.75030194 EpRA 1990 1.71
EpDE 1990 1.40 E RAdeg 5.4 E DEdeg 6.6 Posflg
Corr -0.2
SAO
SAO 189701 DelFlag RA1950 PmRA1950 0.0024
DE1950 PmDE1950 0.008 Vmag 7.5 SpType G5
Double code Source 70 CatNum 28973 DM CD-2816918
DMcomp BDsup HD 197956 M HD 0
GC 28973 RA1950rad 5.43179731 DE1950rad -0.48757206 PmRA2000 0.0023
PmDE2000 0.006
Hipparcos
Catalog H HIP 102641 Proxy RAhms 20 47 52.81
DEdms -27 45 01.1 Vmag 7.57 VarFlag R Vmag H
RAdeg 311.97 DEdeg -27.7503 AstroRef A Plx 5.4
CCDM 20479-2745 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 177 Rho 17.676 HD 197956 BD
CD CD-2816918 CP Dm number -2816918 VIred 1.02
SpType K1II/III R SpType Coord arcsec 2000 204752.81-274501.1
Hipparcos 2
HIP 102641 Sn 15 So 3 Nc 2
RArad 5.4449042433 DErad -0.4843342018 Plx 2.43 PmRA 18.67
PmDE 30.7 E RArad 1.25 E DErad 0.84 E Plx 1.37
E pmRA 1.96 E pmDE 1.74 Hpmag 7.7359 E Hpmag 0.0084
SHp 0.016 VA 0 BV 1.031 E BV 0.015
VI 1
CCDM
Ccdm 20479-2745 RComp Comp A Note1
Note2 Discov num DRAs -1.16 DDEs -3.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.5 Sp G5 PmNote *
PmRA 30 PmDE 8 Dm number -2816918 Cat1 CD
Name2 189701 Cat2 SAO HD 197956 M HD
ADS BDS A14288 M ADS BDS N IDS IDS 20419S2807A
HIC 102641
 
 
20479-2745 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204752.93-274518.8 Mag 10.73 PmRA 35.00
PmDE 47.0 Calc delta mag 3.03 Calc coord yes
CCDM
Ccdm 20479-2745 RComp Comp B Note1
Note2 Discov num STN 53 DRAs DDEs
R dRAs Year 1877 Theta 177 Rho 17.3
Obs 3 Vmag 10.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 -28 7307 Cat2 CPD HD M HD
ADS BDS A14288 M ADS BDS N IDS IDS 20419S2807B
HIC