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Doubles in session


Current system
21057-8443
UC 4376


Nearby doubles
6' : 21020-8441
R 324AB

16' : 20556-8449
TDT2636

21' : 21201-8439
UC 4446

34' : 21213-8419
HJ 5235

46' : 20477-8406
UC 4289

89' : 21159-8316
HJ 5233

102' : 20532-8624
UC 4317

123' : 21079-8645
JSP 815

142' : 21232-8703
I 337AB

150' : 20505-8216
KPP4215

176' : 21232-8150
TDT2937

180' : 21188-8145
TRC 8

188' : 21255-8138
DEA 494

195' : 21123-8129
YMG 92

200' : 21054-8124
HDS3008

242' : 21067-8042
GLI 263

264' : 21171-8021
I 670

266' : 20475-8019
HDS2963

277' : 21208-8008
TDS1124

279' : 21222-8007
LDS 736



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.

21057-8443 UC 4376

 
 
21h 05m 40.88s -84° 43' 09.5" P.A. 117.00 sep 7.9 mag 12.50,15.60
 
 
Coord 2000 21057-8443 Discov num UC 4376 Comp Coord arcsec 2000 21 05 40.88 -84 43 09.5
Date first 1998 Date last 2016 Obs 9
Pa first 117 Pa last 116.8 P.A. Now (θ) 116.8°
Sep first 7.9 Sep last 7.948 Sep. Now (ρ) 7.948"
Mag pri 12.50 Mag sec 15.60 delta mag (ΔM) 3.1 Spectral class
Pri motion ra +037 Sec motion ra +050
Pri motion dec -073 Sec motion dec -070
Notes V (Proper motion indicates physical)
rPM=0.155 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Octans Gaia DR2 6343240845891907712
 
 
WDS 21057-8443 UC 4376 : 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
21057-8443 UC 4376 2000 2 117 8.0 12.50 15.60 V 210540.88-844309.5
21057-8443 UC 4376 2015 6 117 7.9 12.50 15.60 V 210540.88-844309.5
21057-8443 UC 4376 2016 9 117 7.9 12.50 15.60 V 210540.88-844309.5

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

 
 
WDS 21057-8443 UC 4376 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21057-8443 UC 4376 : MEASURES
 
 
No records found.

 
 
WDS 21057-8443 : VIRTUAL EYEPIECE
 
 

21057-8443 UC 4376A mag 12.5 21057-8443 UC 4376B sep 3.6 P.A. 169.70 mag 15.6 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 21057-8443 : ALADIN DSS IMAGE @ 21h 05m 40.88s -84° 43' 09.5"
 
 
 
 
WDS 21057-8443 UC 4376 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21057-8443 UC 4376 distance=0' 21020-8441 R 324BC distance=6' 21020-8441 R 324AB distance=6' 20556-8449 TDT2636 distance=16' 21201-8439 UC 4446 distance=21' 21213-8419 HJ 5235 distance=34' 20477-8406 UC 4289 distance=46' 21159-8316 HJ 5233 distance=89' 20532-8624 UC 4317 distance=102' 21079-8645 JSP 815 distance=123' 21232-8703 I 337AB distance=142' 21232-8703 HJ 5192AB,C distance=142' 21232-8703 I 337AD distance=142' 20505-8216 KPP4215 distance=150' 21232-8150 TDT2937 distance=176' 21188-8145 TRC 8 distance=180' 21255-8138 DEA 494 distance=188' 21123-8129 YMG 92 distance=195' 21054-8124 HDS3008 distance=200' 21067-8042 GLI 263 distance=242' 21171-8021 I 670 distance=264' 20475-8019 HDS2963 distance=266' 21208-8008 TDS1124 distance=277' 21222-8007 LDS 736 distance=279' 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 21057-8443 UC 4376 117 7.9
Show 21020-8441 R 324 BC 62 26.4 6
Show 21020-8441 R 324 AB 39 17.9 6
Show 20556-8449 TDT2636 179 0.5 16
Show 21201-8439 UC 4446 95 8.2 21
Show 21213-8419 HJ 5235 80 3.2 34
Show 20477-8406 UC 4289 72 11.3 46
Show 21159-8316 HJ 5233 268 11.7 89
Show 20532-8624 UC 4317 329 50.9 102
Show 21079-8645 JSP 815 289 2.2 123
Show 21232-8703 I 337 AB 99 0.2 142
Show 21232-8703 HJ 5192 AB,C 318 17.9 142
Show 21232-8703 I 337 AD 88 29.4 142
Show 20505-8216 KPP4215 26 3.6 150
Show 21232-8150 TDT2937 182 3.0 176
Show 21188-8145 TRC 8 195 4.0 180
Show 21255-8138 DEA 494 124 217.5 188
Show 21123-8129 YMG 92 131 0.1 195
Show 21054-8124 HDS3008 62 0.0 200
Show 21067-8042 GLI 263 244 4.8 242
Show 21171-8021 I 670 0.7 264
Show 20475-8019 HDS2963 15 0.3 266
Show 21208-8008 TDS1124 180 1.3 277
Show 21222-8007 LDS 736 2 134.2 279

 
 
WDS 21057-8443 : COMPONENTS
 
 
  A
B pa=169.7°
sep=3.64"
 
 
21057-8443 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 210540.88-844309.5 Mag 12.5 PmRA 37.00
PmDE -73.0
 
 
21057-8443 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 210541.35-844313.1 Mag 15.6 PmRA 50.00
PmDE -70.0 Calc delta mag 3.1 Calc coord yes