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Current system
20388+0202
HJ 920


Nearby doubles
9' : 20387+0156
J 569

19' : 20393+0219
BAL1567

21' : 20376+0211
GRV 364

22' : 20377+0152
J 3255

34' : 20389+0128
KPP3420

37' : 20373+0134
GWP2973

38' : 20372+0135
J 2574

39' : 20413+0216
BAL1569

41' : 20414+0147
BAL1570

44' : 20367+0132
GRV 361

46' : 20418+0156
GWP2986

46' : 20409+0128
BAL1568

48' : 20400+0118
A 2283AB

49' : 20419+0218
UC 252

51' : 20393+0112
BAL1217

51' : 20366+0123
HJ 5513AB

56' : 20351+0202
BAL1564

57' : 20414+0244
GWP2984

59' : 20351+0218
UC 4224

61' : 20427+0217
GRV 370

65' : 20353+0239
HJ 2981

69' : 20434+0204
GWP2989

69' : 20414+0105
GWP2985

71' : 20391+0312
BAL2032

73' : 20419+0258
HJ 2988

82' : 20424+0304
KPP3360



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.

20388+0202 HJ 920

 
 
20h 38m 50.28s +02° 01' 56.9" P.A. 213.00 sep 14.1 mag 10.12,11.60 Sp K2
 
 
Coord 2000 20388+0202 Discov num HJ  920 Comp Coord arcsec 2000 20 38 50.28 +02 01 56.9
Date first 1827 Date last 2015 Obs 15
Pa first 215 Pa last 212.5 P.A. Now (θ) 212.5°
Sep first 10.0 Sep last 14.08 Sep. Now (ρ) 14.08"
Mag pri 10.12 Mag sec 11.60 delta mag (ΔM) 1.48 Spectral class K2 (yellow-orange)
Pri motion ra +006 Sec motion ra +003
Pri motion dec -002 Sec motion dec +001
Notes N (See Notes)
rPM=0.671
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquarius Tycho2 0515-02630-1 Gaia DR2 4231623950088205696
 
 
WDS 20388+0202 HJ 920 : NOTES
 
 
discov_num notes refcode
HJ 920 BAL 1566.
 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20388+0202 HJ 920 2000 8 213 14.0 10.12 11.60 K2 N D 203850.28+020156.9
20388+0202 HJ 920 2015 11 213 14.1 10.12 11.60 K2 N 203850.28+020156.9

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

 
 
WDS 20388+0202 HJ 920 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20388+0202 HJ 920 : MEASURES
 
 
No records found.

 
 
WDS 20388+0202 : VIRTUAL EYEPIECE
 
 

20388+0202 HJ 920A mag 10.12 Sp K2 20388+0202 HJ 920B sep 14.1 P.A. 212.50 mag 11.6 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 20388+0202 : ALADIN DSS IMAGE @ 20h 38m 50.28s +02° 01' 56.9"
 
 
 
 
WDS 20388+0202 HJ 920 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20388+0202 HJ 920 distance=0' 20387+0156 J 569 distance=9' 20393+0219 BAL1567 distance=19' 20376+0211 GRV 364 distance=21' 20377+0152 J 3255 distance=22' 20389+0128 KPP3420 distance=34' 20373+0134 GWP2973 distance=37' 20372+0135 J 2574 distance=38' 20413+0216 BAL1569 distance=39' 20414+0147 BAL1570 distance=41' 20367+0132 GRV 361 distance=44' 20418+0156 GWP2986 distance=46' 20409+0128 BAL1568 distance=46' 20400+0118 A 2283AB distance=48' 20419+0218 UC 252 distance=49' 20393+0112 BAL1217 distance=51' 20366+0123 HJ 5513AB distance=51' 20366+0123 HJ 5513AC distance=51' 20366+0123 HJ 5513AD distance=51' 20351+0202 BAL1564 distance=56' 20414+0244 GWP2984 distance=57' 20351+0218 UC 4224 distance=59' 20427+0217 GRV 370 distance=61' 20353+0239 HJ 2981 distance=65' 20434+0204 GWP2989 distance=69' 20414+0105 GWP2985 distance=69' 20391+0312 BAL2032 distance=71' 20419+0258 HJ 2988 distance=73' 20424+0304 KPP3360 distance=82' 20431+0253 AG 262 distance=82' 20354-0057 BAL 614 distance=83' 20425+0100 TDT2487 distance=84' 20373+0041 UC 4236 distance=85' 20403+0041 A 2284 distance=85' 20379+0325 BAL2540 distance=85' 20373-0039 J 2317 distance=86' 20390-0035 BVD 131 distance=88' 20403+0326 STT 409AB distance=88' 20403+0326 STT 409AC distance=88' 20330+0201 TDT2361 distance=88' 20341+0256 BAL2031 distance=89' 20409-0036 A 874 distance=92' 20433+0059 SLN 39 distance=93' 20394+0029 FYM 187CD distance=93' 20394+0029 HJ 2984AB distance=94' 20394+0029 HJ 2984AC distance=94' 20394+0029 FYM 187AE distance=94' 20373+0332 BAL2539 distance=94' 20396+0025 UC 4246 distance=98' 20440+0049 HJ 923 distance=98' 20455+0201 BAL1571 distance=100' 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 20388+0202 HJ 920 213 14.1
Show 20387+0156 J 569 316 3.0 9
Show 20393+0219 BAL1567 205 19.3 19
Show 20376+0211 GRV 364 156 40.3 21
Show 20377+0152 J 3255 327 3.7 22
Show 20389+0128 KPP3420 241 6.3 34
Show 20373+0134 GWP2973 106 21.3 37
Show 20372+0135 J 2574 158 5.0 38
Show 20413+0216 BAL1569 62 11.2 39
Show 20414+0147 BAL1570 12 5.1 41
Show 20367+0132 GRV 361 103 28.0 44
Show 20418+0156 GWP2986 350 16.1 46
Show 20409+0128 BAL1568 346 8.8 46
Show 20400+0118 A 2283 AB 350 2.3 48
Show 20419+0218 UC 252 164 62.6 49
Show 20393+0112 BAL1217 2 7.9 51
Show 20366+0123 HJ 5513 AB 93 11.9 51
Show 20366+0123 HJ 5513 AC 284 28.7 51
Show 20366+0123 HJ 5513 AD 89 42.5 51
Show 20351+0202 BAL1564 268 4.8 56
Show 20414+0244 GWP2984 263 182.0 57
Show 20351+0218 UC 4224 220 16.1 59
Show 20427+0217 GRV 370 313 25.4 61
Show 20353+0239 HJ 2981 5 12.9 65
Show 20434+0204 GWP2989 131 44.7 69
Show 20414+0105 GWP2985 352 30.4 69
Show 20391+0312 BAL2032 33 16.3 71
Show 20419+0258 HJ 2988 142 23.2 73
Show 20424+0304 KPP3360 234 1.5 82
Show 20431+0253 AG 262 94 5.7 82
Show 20354-0057 BAL 614 80 18.2 83
Show 20425+0100 TDT2487 302 1.1 84
Show 20373+0041 UC 4236 284 17.8 85
Show 20403+0041 A 2284 287 4.8 85
Show 20379+0325 BAL2540 94 16.1 85
Show 20373-0039 J 2317 120 6.1 86
Show 20390-0035 BVD 131 133 30.3 88
Show 20403+0326 STT 409 AB 84 16.8 88
Show 20403+0326 STT 409 AC 330 62.8 88
Show 20330+0201 TDT2361 37 0.5 88
Show 20341+0256 BAL2031 334 17.4 89
Show 20409-0036 A 874 345 1.9 92
Show 20433+0059 SLN 39 233 19.0 93
Show 20394+0029 FYM 187 CD 122 20.2 93
Show 20394+0029 HJ 2984 AB 225 65.0 94
Show 20394+0029 HJ 2984 AC 30 65.9 94
Show 20394+0029 FYM 187 AE 118 35.2 94
Show 20373+0332 BAL2539 77 130.2 94
Show 20396+0025 UC 4246 52 20.8 98
Show 20440+0049 HJ 923 62 7.0 98
Show 20455+0201 BAL1571 307 6.8 100

 
 
WDS 20388+0202 : COMPONENTS
 
 
  A
B pa=212.5°
sep=14.08"
 
 
20388+0202 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 203850.28+020156.9 Mag 10.12 Spectral class K2 (yellow-orange)
PmRA 6.00 PmDE -2.0 Tycho2 0515-02630-1 DM BD+01 4334
Tycho2
Tycho2 0515-02630-1 Pflag RAmdeg 309.70950985 DEmdeg 2.03248041
PmRA 9.1 PmDE -2.5 E RAmdeg 21 E DEmdeg 24
E pmRA 1.3 E pmDE 1.4 EpRAm 1981.70 EpDEm 1977.74
Num 7 Q RAmdeg 1.3 Q DEmdeg 1.8 Q pmRA 1.3
Q pmDE 1.8 BTmag 11.683 E BTmag 0.095 VTmag 10.117
E VTmag 0.040 Prox 999 TYC T HIP
CCDM RAdeg 309.70949417 DEdeg 2.03248639 EpRA 1990 1.66
EpDE 1990 1.23 E RAdeg 28.9 E DEdeg 41.1 Posflg
Corr -0.1
CCDM
Ccdm 20388+0202 RComp Comp A Note1
Note2 Discov num DRAs 2.26 DDEs -2.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 10.8 Sp K2 PmNote *
PmRA 13 PmDE 4 Dm number +01 4334 Cat1 BD
Name2 +01 2478 Cat2 AGK2/3 HD M HD
ADS BDS B10374 M ADS BDS N IDS IDS 20338N0141A
HIC
 
 
20388+0202 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203849.78+020145.0 Mag 11.6 PmRA 3.00
PmDE 1.0 Calc delta mag 1.48 Calc coord yes
CCDM
Ccdm 20388+0202 RComp Comp B Note1
Note2 Discov num HJ 920 DRAs DDEs
R dRAs Year 1908 Theta 211 Rho 14.2
Obs 2 Vmag 12.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B10374 M ADS BDS N N IDS IDS 20338N0141B
HIC