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Doubles in session


Current system
20447-2917
UC 4277


Nearby doubles
21' : 20433-2925
SKF2089

34' : 20427-2855
RST2153

38' : 20430-2846
SEE 425

38' : 20461-2843
RST2158

45' : 20441-3000
SKF1248

45' : 20431-2838
RST2154

46' : 20458-2834
RST2157

49' : 20464-2834
RST2159

52' : 20434-3005
LDS5909

58' : 20431-3010
UC 4267

64' : 20401-2852
SEE 423AB

66' : 20400-2940
RST2151

73' : 20454-3029
HJ 5218

74' : 20412-3015
RST2152

81' : 20424-3031
H N 101AB

84' : 20498-2829
LDS 725

90' : 20487-2804
FIN 8

91' : 20393-2820
RST2149

95' : 20516-2943
DAM 668

97' : 20517-2947
RST2164

100' : 20521-2938
FIN 5

101' : 20479-2745
STN 53

102' : 20452-3057
FAL 70AB

110' : 20530-2937
B 506

112' : 20507-2759
HDS2971

113' : 20375-2817
BRT3093



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.

20447-2917 UC 4277

 
 
20h 44m 39.52s -29° 16' 35.6" P.A. 18.00 sep 16.5 mag 9.40,15.40 Sp F5V
 
 
Coord 2000 20447-2917 Discov num UC 4277 Comp Coord arcsec 2000 20 44 39.52 -29 16 35.6
Date first 1999 Date last 2015 Obs 5
Pa first 18 Pa last 17.7 P.A. Now (θ) 17.7°
Sep first 16.2 Sep last 16.452 Sep. Now (ρ) 16.452"
Mag pri 9.40 Mag sec 15.40 delta mag (ΔM) 6 Spectral class F5V (yellow-white)
Pri motion ra +082 Sec motion ra +081
Pri motion dec -014 Sec motion dec -007
Notes V (Proper motion indicates physical)
rPM=0.085 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Microscopium SAO 189631 Tycho2 6933-01508-1 Gaia DR2 6795289899008059392
HD 197427 GC 28896 DM CD-2917294
 
 
WDS 20447-2917 UC 4277 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
UC USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4) ...................
UC_2013a Eu j Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G., 2013AJ....145...44Z
UC_2013a & Zacharias, M.I. (UCAC4 Catalog)
UC_2013a AJ 145, 44, 2013
UC_2013b Eu j Hartkopf, W.I., Mason, B.D., Finch, C.T., Zacharias, N., Wycoff, G.L., & Hsu, D. 2013AJ....146...76H
UC_2013b AJ 146, 76, 2013 (UC 301 - 5058)
UC_2013b (Relative astrometry is derived from individual measurements, not precessed means.
UC_2013b UCAC aperture magnitudes are listed, unless the duplicity flag indicates a blended
UC_2013b image (a flag value of 30 or higher). Model fit magnitudes are given for both
UC_2013b components if either has such a flag. Model fit magnitudes are indicated by the
UC_2013b letter "f" following the filter information.
UC_2013b APASS photometry extracted from UCAC4 catalog is listed under reference AAV2012.
UC_2013b Due to aperture method used, APASS photometry is only included for pairs wider
UC_2013b than 10" (Henden, private comm.) Photometry for pairs wider than 10" which showed
UC_2013b identical values for both components in all filters were removed, as well.
UC_2015 Eu - Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C., 2015AJ....150..101Z
UC_2015 DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C.,
UC_2015 Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G.
UC_2015 AJ 150, 101, 2015
UC_9999 Eu - temporary UCAC files ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20447-2917 UC 4277 2000 2 18 16.6 9.40 15.40 V 204439.52-291635.6
20447-2917 UC 4277 2010 3 18 16.2 9.40 15.40 F5V V 204439.52-291635.6
20447-2917 UC 4277 2015 4 18 16.4 9.40 15.40 F5V V 204439.52-291635.6

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

 
 
WDS 20447-2917 UC 4277 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20447-2917 UC 4277 : MEASURES
 
 
No records found.

 
 
WDS 20447-2917 : VIRTUAL EYEPIECE
 
 

20447-2917 UC 4277A mag 9.4 Sp F5V 20447-2917 UC 4277B sep 16.3 P.A. 15.60 mag 15.4 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 20447-2917 : ALADIN DSS IMAGE @ 20h 44m 39.52s -29° 16' 35.6"
 
 
 
 
WDS 20447-2917 UC 4277 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20447-2917 UC 4277 distance=0' 20433-2925 SKF2089 distance=21' 20427-2855 RST2153 distance=34' 20430-2846 SEE 425 distance=38' 20461-2843 RST2158 distance=38' 20441-3000 SKF1248 distance=45' 20431-2838 RST2154 distance=45' 20458-2834 RST2157 distance=46' 20464-2834 RST2159 distance=49' 20434-3005 LDS5909 distance=52' 20431-3010 UC 4267 distance=58' 20401-2852 SEE 423AB distance=64' 20401-2852 SEE 423BC distance=64' 20400-2940 RST2151 distance=66' 20454-3029 HJ 5218 distance=73' 20412-3015 RST2152 distance=74' 20424-3031 H N 101AB distance=81' 20498-2829 LDS 725 distance=84' 20487-2804 FIN 8 distance=90' 20393-2820 RST2149 distance=91' 20516-2927 TOK 863Aa,Ab distance=92' 20516-2943 DAM 668 distance=95' 20517-2947 RST2164 distance=97' 20521-2938 FIN 5 distance=100' 20479-2745 STN 53 distance=101' 20452-3057 FAL 70AB distance=102' 20452-3057 TOK 340AC distance=102' 20452-3057 JSP 817CD distance=106' 20530-2937 B 506 distance=110' 20507-2759 HDS2971 distance=112' 20375-2817 BRT3093 distance=113' 20500-3049 RST2161 distance=116' 20448-3112 TDT2516 distance=116' 20452-3120 LDS 720AB distance=125' 20365-2813 RST2147 distance=125' 20452-3122 WOR 40 distance=126' 20503-3058 LDS5911 distance=127' 20533-2821 COO 290 distance=127' 20519-3047 UC 4313 distance=130' 20501-2722 HJ 5226 distance=136' 20511-3103 RST2163 distance=136' 20396-2717 RST2150 distance=138' 20485-3126 B 996 distance=139' 20479-3132 B 995 distance=142' 20507-3116 B 997 distance=143' 20456-2653 B 2891 distance=144' 20517-3109 LDS5913 distance=147' 20465-2652 HJ 5220 distance=147' 20552-3008 HDS2980 distance=148' 20396-2704 HJ 5210 distance=150' 20440-3147 JSP 816 distance=152' 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 20447-2917 UC 4277 18 16.5
Show 20433-2925 SKF2089 284 17.7 21
Show 20427-2855 RST2153 42 0.2 34
Show 20430-2846 SEE 425 226 7.9 38
Show 20461-2843 RST2158 278 1.4 38
Show 20441-3000 SKF1248 55 6.4 45
Show 20431-2838 RST2154 279 0.8 45
Show 20458-2834 RST2157 170 0.7 46
Show 20464-2834 RST2159 316 3.6 49
Show 20434-3005 LDS5909 146 10.6 52
Show 20431-3010 UC 4267 59 8.2 58
Show 20401-2852 SEE 423 AB 39 1.2 64
Show 20401-2852 SEE 423 BC 281 0.2 64
Show 20400-2940 RST2151 57 0.2 66
Show 20454-3029 HJ 5218 190 9.8 73
Show 20412-3015 RST2152 335 0.9 74
Show 20424-3031 H N 101 AB 334 25.9 81
Show 20498-2829 LDS 725 271 21.8 84
Show 20487-2804 FIN 8 189 2.5 90
Show 20393-2820 RST2149 155 1.0 91
Show 20516-2927 TOK 863 Aa,Ab 173 1.5 92
Show 20516-2943 DAM 668 309 11.2 95
Show 20517-2947 RST2164 318 1.0 97
Show 20521-2938 FIN 5 71 2.0 100
Show 20479-2745 STN 53 175 18.1 101
Show 20452-3057 FAL 70 AB 76 17.5 102
Show 20452-3057 TOK 340 AC 235 539.4 102
Show 20452-3057 JSP 817 CD 75 2.2 106
Show 20530-2937 B 506 317 3.2 110
Show 20507-2759 HDS2971 49 0.2 112
Show 20375-2817 BRT3093 85 3.8 113
Show 20500-3049 RST2161 271 2.6 116
Show 20448-3112 TDT2516 60 0.6 116
Show 20452-3120 LDS 720 AB 213 999.9 125
Show 20365-2813 RST2147 315 1.2 125
Show 20452-3122 WOR 40 168 4.8 126
Show 20503-3058 LDS5911 78 118.0 127
Show 20533-2821 COO 290 248 7.3 127
Show 20519-3047 UC 4313 233 12.5 130
Show 20501-2722 HJ 5226 67 18.7 136
Show 20511-3103 RST2163 231 2.1 136
Show 20396-2717 RST2150 5 1.7 138
Show 20485-3126 B 996 321 1.6 139
Show 20479-3132 B 995 288 0.5 142
Show 20507-3116 B 997 273 0.2 143
Show 20456-2653 B 2891 253 5.0 144
Show 20517-3109 LDS5913 85 97.0 147
Show 20465-2652 HJ 5220 354 18.1 147
Show 20552-3008 HDS2980 334 0.1 148
Show 20396-2704 HJ 5210 263 10.7 150
Show 20440-3147 JSP 816 132 3.3 152

 
 
WDS 20447-2917 : COMPONENTS
 
 
  A
B pa=15.6°
sep=16.27"
 
 
20447-2917 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204439.52-291635.6 Mag 9.4 Spectral class F5V (yellow-white)
PmRA 82.00 PmDE -14.0 SAO 189631 Tycho2 6933-01508-1
HD 197427 GC 28896 DM CD-2917294
Tycho2
Tycho2 6933-01508-1 Pflag RAmdeg 311.16467497 DEmdeg -29.27655268
PmRA 82.2 PmDE -12.6 E RAmdeg 8 E DEmdeg 10
E pmRA 2.5 E pmDE 2.2 EpRAm 1991.67 EpDEm 1991.33
Num 3 Q RAmdeg 0.2 Q DEmdeg 0.9 Q pmRA 0.2
Q pmDE 1.0 BTmag 9.268 E BTmag 0.019 VTmag 8.723
E VTmag 0.015 Prox 999 TYC T HIP
CCDM RAdeg 311.16446056 DEdeg -29.27652306 EpRA 1990 1.80
EpDE 1990 1.58 E RAdeg 7.9 E DEdeg 9.5 Posflg
Corr -0.1
SAO
SAO 189631 DelFlag RA1950 PmRA1950 0.0057
DE1950 PmDE1950 -0.034 Vmag 8.7 SpType F8
Double code Source 70 CatNum 28896 DM CD-2917294
DMcomp BDsup HD 197427 M HD 0
GC 28896 RA1950rad 5.41756736 DE1950rad -0.51414928 PmRA2000 0.0056
PmDE2000 -0.036
 
 
20447-2917 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204439.85-291619.9 Mag 15.4 PmRA 81.00
PmDE -7.0 Calc delta mag 6 Calc coord yes