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Doubles in session


Current system
21273+4315
HJ 1646
HD 204402


Nearby doubles
15' : 21280+4305
HO 160

21' : 21265+4254
TDT2967

30' : 21296+4307
COU2232

32' : 21249+4336
BRT1150

36' : 21264+4349
HO 159

39' : 21262+4351
TDT2963

45' : 21232+4258
COU2304AB

46' : 21268+4228
A 619

49' : 21246+4355
BRT1149

58' : 21218+4309
STT 438

59' : 21304+4229
TDT3003

62' : 21214+4301
ES 1585AB

63' : 21309+4228
TDT3004AB

65' : 21223+4353
TDT2930

66' : 21219+4347
TDT2924

67' : 21333+4306
ES 1455

72' : 21227+4408
COU2303

72' : 21261+4203
COU2307

72' : 21207+4251
GRV 452

73' : 21306+4213
STT 441AB

73' : 21225+4409
HJ 1640

74' : 21213+4235
LDS2513

75' : 21237+4420
KPP3422

76' : 21220+4408
HJ 1639

76' : 21291+4202
TDT2987

76' : 21202+4325
BRT1148



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.

21273+4315 HJ 1646 (HD 204402)

 
 
21h 27m 00.86s +43° 13' 50.9" P.A. 115.00 sep 23.1 mag 7.63,11.10 Sp A1V dist. 173.31 pc (565.34 l.y.)
 
 
Coord 2000 21273+4315 Discov num HJ 1646 Comp Coord arcsec 2000 21 27 00.86 +43 13 50.9
Date first 1895 Date last 2014 Obs 11
Pa first 119 Pa last 114.5 P.A. Now (θ) 114.5°
Sep first 21.7 Sep last 23.068 Sep. Now (ρ) 23.068"
Mag pri 7.63 Mag sec 11.10 delta mag (ΔM) 3.47 Spectral class A1V (white)
Pri motion ra -023 Sec motion ra -003
Pri motion dec -014 Sec motion dec -006
Notes U (Proper motion indicates non-physical)
rPM=0.8
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 204402 Constellation Cygnus SAO 50868 HIP 105909
Tycho2 3194-02959-1 Gaia DR2 1970506707380091264 HD 204402 BD BD+42 4101
Distance 173.31 Distance ly 565.34
 
 
WDS 21273+4315 HJ 1646 (HD 204402) : NOTES
 
 
No records found.

 
 
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
21273+4315 HJ 1646 2003 7 114 21.9 9.00 13.00 DU 212700.86+431350.9
21273+4315 HJ 1646 2010 8 114 23.0 7.63 11.10 A1V U 212700.86+431350.9
21273+4315 HJ 1646 2014 11 115 23.1 7.63 11.10 A1V U 212700.86+431350.9

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

 
 
WDS 21273+4315 HJ 1646 (HD 204402) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21273+4315 HJ 1646 (HD 204402) : MEASURES
 
 
No records found.

 
 
WDS 21273+4315 (HD 204402) : VIRTUAL EYEPIECE
 
 

21273+4315 HJ 1646A mag 7.63 Sp A1V 21273+4315 HJ 1646B sep 18.0 P.A. 122.00 mag 11.1 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 21273+4315 (HD 204402) : ALADIN DSS IMAGE @ 21h 27m 00.86s +43° 13' 50.9"
 
 
 
 
WDS 21273+4315 HJ 1646 (HD 204402) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21273+4315 HJ 1646 distance=1' 21280+4305 HO 160 distance=15' 21265+4254 TDT2967 distance=21' 21296+4307 COU2232 distance=30' 21249+4336 BRT1150 distance=32' 21264+4349 HO 159 distance=36' 21262+4351 TDT2963 distance=39' 21232+4258 COU2304AB distance=45' 21232+4258 GII 32AB,C distance=45' 21268+4228 A 619 distance=46' 21246+4355 BRT1149 distance=49' 21218+4309 STT 438 distance=58' 21304+4229 TDT3003 distance=59' 21214+4301 ES 1585AB distance=62' 21214+4301 ES 1585AC distance=62' 21214+4301 ES 1585BC distance=63' 21309+4228 TDT3004AB distance=63' 21223+4353 TDT2930 distance=65' 21219+4347 TDT2924 distance=66' 21333+4306 ES 1455 distance=67' 21227+4408 COU2303 distance=72' 21261+4203 COU2307 distance=72' 21207+4251 GRV 452 distance=72' 21306+4213 STT 441AB distance=73' 21306+4213 FYM 336AC distance=73' 21306+4213 FYM 336AD distance=73' 21225+4409 HJ 1640 distance=73' 21213+4235 LDS2513 distance=74' 21237+4420 KPP3422 distance=75' 21220+4408 HJ 1639 distance=76' 21291+4202 TDT2987 distance=76' 21202+4325 BRT1148 distance=76' 21200+4308 LDS2509 distance=78' 21199+4307 COU2439 distance=79' 21346+4322 AG 418 distance=84' 21316+4420 ES 1337AB distance=85' 21316+4420 ES 1337AC distance=85' 21192+4320 TDT2899 distance=86' 21195+4253 FOX 259AB distance=86' 21206+4219 WSI 16 distance=90' 21260+4144 BLL 54 distance=91' 21307+4435 ES 1336 distance=92' 21206+4215 LDS2511AB distance=92' 21206+4215 LDS2511AC distance=92' 21282+4445 KPP 7 distance=93' 21197+4228 ES 1583AB distance=93' 21197+4228 ABH 144AD distance=93' 21197+4228 ABH 144AE distance=93' 21197+4228 ABH 144AF distance=93' 21197+4228 ABH 144AG distance=93' 21197+4228 ABH 144AH distance=93' 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 21273+4315 HJ 1646 115 23.1 1
Show 21280+4305 HO 160 182 2.0 15
Show 21265+4254 TDT2967 4 1.4 21
Show 21296+4307 COU2232 17 1.8 30
Show 21249+4336 BRT1150 60 2.9 32
Show 21264+4349 HO 159 183 5.5 36
Show 21262+4351 TDT2963 267 0.5 39
Show 21232+4258 COU2304 AB 154 0.4 45
Show 21232+4258 GII 32 AB,C 49 5.4 45
Show 21268+4228 A 619 61 0.7 46
Show 21246+4355 BRT1149 136 3.2 49
Show 21218+4309 STT 438 357 2.2 58
Show 21304+4229 TDT3003 309 0.5 59
Show 21214+4301 ES 1585 AB 230 19.2 62
Show 21214+4301 ES 1585 AC 221 26.9 62
Show 21214+4301 ES 1585 BC 202 8.4 63
Show 21309+4228 TDT3004 AB 164 5.9 63
Show 21223+4353 TDT2930 356 1.8 65
Show 21219+4347 TDT2924 221 1.0 66
Show 21333+4306 ES 1455 293 6.6 67
Show 21227+4408 COU2303 269 1.9 72
Show 21261+4203 COU2307 21 1.2 72
Show 21207+4251 GRV 452 162 59.2 72
Show 21306+4213 STT 441 AB 328 6.1 73
Show 21306+4213 FYM 336 AC 123 9.5 73
Show 21306+4213 FYM 336 AD 280 19.4 73
Show 21225+4409 HJ 1640 35 7.4 73
Show 21213+4235 LDS2513 246 7.1 74
Show 21237+4420 KPP3422 231 17.2 75
Show 21220+4408 HJ 1639 102 10.7 76
Show 21291+4202 TDT2987 37 0.5 76
Show 21202+4325 BRT1148 83 4.1 76
Show 21200+4308 LDS2509 176 1.9 78
Show 21199+4307 COU2439 266 0.8 79
Show 21346+4322 AG 418 113 13.9 84
Show 21316+4420 ES 1337 AB 264 6.2 85
Show 21316+4420 ES 1337 AC 152 22.9 85
Show 21192+4320 TDT2899 136 0.6 86
Show 21195+4253 FOX 259 AB 307 12.5 86
Show 21206+4219 WSI 16 149 8.2 90
Show 21260+4144 BLL 54 296 80.7 91
Show 21307+4435 ES 1336 346 4.8 92
Show 21206+4215 LDS2511 AB 40 3.0 92
Show 21206+4215 LDS2511 AC 197 19.7 92
Show 21282+4445 KPP 7 269 4.0 93
Show 21197+4228 ES 1583 AB 238 13.0 93
Show 21197+4228 ABH 144 AD 112 64.4 93
Show 21197+4228 ABH 144 AE 219 27.2 93
Show 21197+4228 ABH 144 AF 245 62.8 93
Show 21197+4228 ABH 144 AG 238 82.9 93
Show 21197+4228 ABH 144 AH 22 41.7 93

 
 
WDS 21273+4315 : COMPONENTS
 
 
  A
B pa=122.0°
sep=18.04"
 
 
21273+4315 A
 
 
Componente originario normalizzato AB Name HD 204402 Coord arcsec 2000 212700.86+431350.9 Mag 7.63
Spectral class A1V (white) PmRA -23.00 PmDE -14.0 SAO 50868
HIP 105909 Tycho2 3194-02959-1 HD 204402 BD BD+42 4101
Tycho2
Tycho2 3194-02959-1 Pflag RAmdeg 321.75361072 DEmdeg 43.23081124
PmRA -22.5 PmDE -16.2 E RAmdeg 4 E DEmdeg 4
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.44 EpDEm 1991.49
Num 7 Q RAmdeg 1.0 Q DEmdeg 1.0 Q pmRA 1.0
Q pmDE 1.1 BTmag 7.701 E BTmag 0.015 VTmag 7.633
E VTmag 0.010 Prox 999 TYC T HIP 105909
CCDM RAdeg 321.75368250 DEdeg 43.23084861 EpRA 1990 1.62
EpDE 1990 1.67 E RAdeg 4.3 E DEdeg 4.3 Posflg
Corr 0.1
SAO
SAO 50868 DelFlag RA1950 PmRA1950 -0.0038
DE1950 PmDE1950 0.001 Vmag 7.7 SpType A0
Double code Source 4 CatNum 1983 DM BD+42 4101
DMcomp BDsup HD 204402 M HD 0
GC RA1950rad 5.60731342 DE1950rad 0.75072336 PmRA2000 -0.0035
PmDE2000 -0.003
Hipparcos
Catalog H HIP 105909 Proxy RAhms 21 27 00.88
DEdms +43 13 51.1 Vmag 7.62 VarFlag R Vmag H
RAdeg 321.754 DEdeg 43.2309 AstroRef Plx 5.5
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 204402 BD BD+42 4101
CD CP Dm number +42 4101 VIred 0.03
SpType A0 R SpType Coord arcsec 2000 212700.88+431351.1
Hipparcos 2
HIP 105909 Sn 5 So 0 Nc 1
RArad 5.6156612106 DErad 0.754520676 Plx 5.77 PmRA -21.83
PmDE -16.35 E RArad 0.32 E DErad 0.34 E Plx 0.47
E pmRA 0.35 E pmDE 0.39 Hpmag 7.6533 E Hpmag 0.0012
SHp 0.012 VA 0 BV 0.072 E BV 0.009
VI 0.08
 
 
21273+4315 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 212702.26+431341.3 Mag 11.1 PmRA -3.00
PmDE -6.0 Calc delta mag 3.47 Calc coord yes