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Doubles in session


Current system
20420+0021
UC 4262


Nearby doubles
8' : 20416+0017
UC 4258AB

23' : 20409-0036
A 874

23' : 20405-0023
SKF1768

25' : 20434-0012
J 3346

25' : 20435+0011
GRV1233

29' : 20406-0002
SLW1226

31' : 20401-0009
GRV1232

33' : 20403+0041
A 2284

37' : 20396+0025
UC 4246

39' : 20445+0029
BAL1219

40' : 20441+0044
BAL1218

40' : 20425+0100
TDT2487

40' : 20394+0029
HJ 2984AB

43' : 20433+0059
SLN 39

46' : 20414+0105
GWP2985

47' : 20390-0035
BVD 131

50' : 20440+0049
HJ 923

52' : 20454+0023
A 876

57' : 20384+0000
J 2318AB

65' : 20400+0118
A 2283AB

66' : 20393+0112
BAL1217

70' : 20409+0128
BAL1568

72' : 20373-0039
J 2317

74' : 20373+0041
UC 4236

78' : 20472+0021
CBL 529

81' : 20472-0006
BAL 924



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.

20420+0021 UC 4262

 
 
20h 42m 00.55s +00° 21' 00.8" P.A. 221.00 sep 44.1 mag 16.40,16.50
 
 
Coord 2000 20420+0021 Discov num UC 4262 Comp Coord arcsec 2000 20 42 00.55 +00 21 00.8
Date first 1999 Date last 2010 Obs 4
Pa first 221 Pa last 220.7 P.A. Now (θ) 220.7°
Sep first 44.0 Sep last 44.09 Sep. Now (ρ) 44.09"
Mag pri 16.40 Mag sec 16.50 delta mag (ΔM) 0.1 Spectral class
Pri motion ra -041 Sec motion ra -056
Pri motion dec -050 Sec motion dec -071
Notes V (Proper motion indicates physical)
rPM=0.285 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquarius Gaia DR2 4228200487492221312
 
 
WDS 20420+0021 UC 4262 : 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
20420+0021 UC 4262 2000 2 221 44.1 16.40 16.50 V 204200.55+002100.8
20420+0021 UC 4262 2010 4 221 44.1 16.40 16.50 V 204200.55+002100.8

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

 
 
WDS 20420+0021 UC 4262 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20420+0021 UC 4262 : MEASURES
 
 
No records found.

 
 
WDS 20420+0021 : VIRTUAL EYEPIECE
 
 

20420+0021 UC 4262A mag 16.4 20420+0021 UC 4262B sep 44.1 P.A. 220.70 mag 16.5 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 20420+0021 : ALADIN DSS IMAGE @ 20h 42m 00.55s +00° 21' 00.8"
 
 
 
 
WDS 20420+0021 UC 4262 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20420+0021 UC 4262 distance=0' 20416+0017 UC 4258AB distance=8' 20409-0036 A 874 distance=23' 20405-0023 SKF1768 distance=23' 20434-0012 J 3346 distance=25' 20435+0011 GRV1233 distance=25' 20406-0002 SLW1226 distance=29' 20401-0009 GRV1232 distance=31' 20403+0041 A 2284 distance=33' 20396+0025 UC 4246 distance=37' 20445+0029 BAL1219 distance=39' 20441+0044 BAL1218 distance=40' 20394+0029 FYM 187CD distance=40' 20425+0100 TDT2487 distance=40' 20394+0029 HJ 2984AB distance=40' 20394+0029 HJ 2984AC distance=40' 20394+0029 FYM 187AE distance=40' 20433+0059 SLN 39 distance=43' 20414+0105 GWP2985 distance=46' 20390-0035 BVD 131 distance=47' 20440+0049 HJ 923 distance=50' 20454+0023 A 876 distance=52' 20384+0000 J 2318AB distance=57' 20384+0000 J 2318AC distance=57' 20400+0118 A 2283AB distance=65' 20393+0112 BAL1217 distance=66' 20409+0128 BAL1568 distance=70' 20373-0039 J 2317 distance=72' 20373+0041 UC 4236 distance=74' 20472+0021 CBL 529 distance=78' 20472-0006 BAL 924 distance=81' 20389+0128 KPP3420 distance=83' 20412-0105 STF2706AB distance=87' 20412-0105 STF2706AC distance=87' 20414+0147 BAL1570 distance=87' 20478+0007 SKF2612 distance=88' 20475+0105 BAL1220 distance=94' 20418+0156 GWP2986 distance=95' 20452-0103 LEO 56 distance=97' 20481+0053 CVR 873 distance=97' 20485+0012 UC 4295 distance=98' 20373+0134 GWP2973 distance=102' 20441-0116 GWP2991 distance=103' 20352+0019 RST5157 distance=103' 20383-0106 BU 672 distance=104' 20372+0135 J 2574 distance=104' 20486-0055 BAL 616 distance=104' 20434+0204 GWP2989 distance=106' 20354-0057 BAL 614 distance=107' 20350+0033 J 1399 distance=107' 20367+0132 GRV 361 distance=107' 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 20420+0021 UC 4262 221 44.1
Show 20416+0017 UC 4258 AB 3 46.5 8
Show 20409-0036 A 874 345 1.9 23
Show 20405-0023 SKF1768 18 1.5 23
Show 20434-0012 J 3346 106 1.8 25
Show 20435+0011 GRV1233 104 10.5 25
Show 20406-0002 SLW1226 226 166.7 29
Show 20401-0009 GRV1232 144 24.2 31
Show 20403+0041 A 2284 287 4.8 33
Show 20396+0025 UC 4246 52 20.8 37
Show 20445+0029 BAL1219 214 17.3 39
Show 20441+0044 BAL1218 229 3.4 40
Show 20394+0029 FYM 187 CD 122 20.2 40
Show 20425+0100 TDT2487 302 1.1 40
Show 20394+0029 HJ 2984 AB 225 65.0 40
Show 20394+0029 HJ 2984 AC 30 65.9 40
Show 20394+0029 FYM 187 AE 118 35.2 40
Show 20433+0059 SLN 39 233 19.0 43
Show 20414+0105 GWP2985 352 30.4 46
Show 20390-0035 BVD 131 133 30.3 47
Show 20440+0049 HJ 923 62 7.0 50
Show 20454+0023 A 876 68 0.6 52
Show 20384+0000 J 2318 AB 150 5.6 57
Show 20384+0000 J 2318 AC 119 14.9 57
Show 20400+0118 A 2283 AB 350 2.3 65
Show 20393+0112 BAL1217 2 7.9 66
Show 20409+0128 BAL1568 346 8.8 70
Show 20373-0039 J 2317 120 6.1 72
Show 20373+0041 UC 4236 284 17.8 74
Show 20472+0021 CBL 529 43 49.8 78
Show 20472-0006 BAL 924 128 15.4 81
Show 20389+0128 KPP3420 241 6.3 83
Show 20412-0105 STF2706 AB 37 11.1 87
Show 20412-0105 STF2706 AC 318 189.6 87
Show 20414+0147 BAL1570 12 5.1 87
Show 20478+0007 SKF2612 63 1.0 88
Show 20475+0105 BAL1220 193 21.1 94
Show 20418+0156 GWP2986 350 16.1 95
Show 20452-0103 LEO 56 278 0.5 97
Show 20481+0053 CVR 873 324 12.3 97
Show 20485+0012 UC 4295 196 69.5 98
Show 20373+0134 GWP2973 106 21.3 102
Show 20441-0116 GWP2991 16 13.8 103
Show 20352+0019 RST5157 293 1.8 103
Show 20383-0106 BU 672 285 35.8 104
Show 20372+0135 J 2574 158 5.0 104
Show 20486-0055 BAL 616 206 2.4 104
Show 20434+0204 GWP2989 131 44.7 106
Show 20354-0057 BAL 614 80 18.2 107
Show 20350+0033 J 1399 276 2.2 107
Show 20367+0132 GRV 361 103 28.0 107

 
 
WDS 20420+0021 : COMPONENTS
 
 
  A
B pa=220.7°
sep=44.09"
 
 
20420+0021 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204200.55+002100.8 Mag 16.4 PmRA -41.00
PmDE -50.0
 
 
20420+0021 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204158.63+002027.4 Mag 16.5 PmRA -56.00
PmDE -71.0 Calc delta mag 0.1 Calc coord yes