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Current system
21479+3117
HJ 1688


Nearby doubles
10' : 21487+3115
HJ 1695

32' : 21455+3113
TDT3141

35' : 21494+3048
GRV 511

37' : 21494+3045
STF2829

45' : 21501+3151
BU 692AB

47' : 21457+3152
J 2356

48' : 21449+3145
ES 381

51' : 21444+3140
HJ 1686

52' : 21511+3046
DEA 89

63' : 21451+3026
TDT3136

66' : 21441+3203
J 2355

67' : 21516+3030
MLB 669

68' : 21441+3205
J 2354AB

70' : 21431+3149
A 1222

71' : 21534+3115
TDT3217

74' : 21469+3229
GYL 65

76' : 21422+3100
OSO 154AB

77' : 21487+3231
GRV 508

79' : 21487+3233
GRV 510

84' : 21532+3205
ES 2322AB

85' : 21457+2957
TDT3145

86' : 21530+3210
KPP4254

87' : 21458+2954
TDT3146

89' : 21429+3014
TDT3119

91' : 21409+3122
AG 275

92' : 21412+3043
J 3143



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.

21479+3117 HJ 1688

 
 
21h 47m 53.80s +31° 16' 04.7" P.A. 351.00 sep 16.4 mag 11.13,12.60
 
 
Coord 2000 21479+3117 Discov num HJ 1688 Comp Coord arcsec 2000 21 47 53.80 +31 16 04.7
Date first 1828 Date last 2015 Obs 11
Pa first 6 Pa last 351.4 P.A. Now (θ) 351.4°
Sep first 12.0 Sep last 16.351 Sep. Now (ρ) 16.351"
Mag pri 11.13 Mag sec 12.60 delta mag (ΔM) 1.47 Spectral class
Pri motion ra -016 Sec motion ra -038
Pri motion dec -031 Sec motion dec -023
Notes
rPM=0.527
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2718-02202-1 Gaia DR2 1945729006677773568
 
 
WDS 21479+3117 HJ 1688 : 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
21479+3117 HJ 1688 1999 4 352 16.2 11.13 12.60 D 214753.80+311604.7
21479+3117 HJ 1688 2002 6 352 16.2 11.13 12.60 D 214753.80+311604.7
21479+3117 HJ 1688 2010 7 352 16.2 11.13 12.60 214753.80+311604.7
21479+3117 HJ 1688 2015 8 351 16.4 11.13 12.60 214753.80+311604.7

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

 
 
WDS 21479+3117 HJ 1688 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21479+3117 HJ 1688 : MEASURES
 
 
No records found.

 
 
WDS 21479+3117 : VIRTUAL EYEPIECE
 
 

21479+3117 HJ 1688A mag 11.13 21479+3117 HJ 1688B sep 16.3 P.A. 352.60 mag 12.6 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 21479+3117 : ALADIN DSS IMAGE @ 21h 47m 53.80s +31° 16' 04.7"
 
 
 
 
WDS 21479+3117 HJ 1688 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21479+3117 HJ 1688 distance=0' 21487+3115 HJ 1695 distance=10' 21455+3113 TDT3141 distance=32' 21494+3048 GRV 511 distance=35' 21494+3045 STF2829 distance=37' 21501+3151 BU 692AB distance=45' 21501+3151 FOX 264AD distance=45' 21501+3151 FOX 264AE distance=45' 21501+3151 BU 692AC distance=45' 21501+3151 BU 692BC distance=45' 21457+3152 J 2356 distance=47' 21449+3145 ES 381 distance=48' 21444+3140 HJ 1686 distance=51' 21511+3046 DEA 89 distance=52' 21451+3026 TDT3136 distance=63' 21441+3203 J 2355 distance=66' 21516+3030 MLB 669 distance=67' 21441+3205 DAM 235BC distance=68' 21441+3205 J 2354AB distance=68' 21431+3149 A 1222 distance=70' 21534+3115 TDT3217 distance=71' 21469+3229 GYL 65 distance=74' 21422+3100 OSO 154AB distance=76' 21422+3100 OSO 154AC distance=76' 21422+3100 OSO 154AD distance=76' 21422+3100 OSO 154AE distance=76' 21487+3231 GRV 508 distance=77' 21487+3233 GRV 510 distance=79' 21532+3205 ES 2322AB distance=84' 21532+3205 ES 2322AD distance=84' 21532+3205 ES 2322DE distance=85' 21532+3205 ES 2322BC distance=85' 21457+2957 TDT3145 distance=85' 21530+3210 KPP4254 distance=86' 21458+2954 TDT3146 distance=87' 21429+3014 TDT3119 distance=89' 21409+3122 AG 275 distance=91' 21412+3043 J 3143 distance=92' 21509+3240 ES 382AB distance=92' 21509+3240 ES 382AC distance=92' 21509+3240 FYM 143AF distance=92' 21509+3240 FYM 143CD distance=93' 21509+3240 FYM 143CE distance=93' 21509+3240 FYM 143CF distance=93' 21455+2948 DAM 237 distance=94' 21407+3056 GRV 490 distance=95' 21487+3251 ES 2386 distance=96' 21458+2945 DAM 236 distance=96' 21544+3204 TDT3227 distance=96' 21544+3206 COU1042 distance=97' 21492+3254 ES 2265 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 21479+3117 HJ 1688 351 16.4
Show 21487+3115 HJ 1695 115 13.3 10
Show 21455+3113 TDT3141 358 2.5 32
Show 21494+3048 GRV 511 228 40.4 35
Show 21494+3045 STF2829 15 17.1 37
Show 21501+3151 BU 692 AB 10 2.9 45
Show 21501+3151 FOX 264 AD 150 40.2 45
Show 21501+3151 FOX 264 AE 178 54.5 45
Show 21501+3151 BU 692 AC 292 40.9 45
Show 21501+3151 BU 692 BC 292 40.8 45
Show 21457+3152 J 2356 135 6.3 47
Show 21449+3145 ES 381 110 4.6 48
Show 21444+3140 HJ 1686 229 13.7 51
Show 21511+3046 DEA 89 204 14.8 52
Show 21451+3026 TDT3136 0.8 63
Show 21441+3203 J 2355 346 3.5 66
Show 21516+3030 MLB 669 309 3.2 67
Show 21441+3205 DAM 235 BC 206 6.5 68
Show 21441+3205 J 2354 AB 199 4.9 68
Show 21431+3149 A 1222 352 0.7 70
Show 21534+3115 TDT3217 327 4.2 71
Show 21469+3229 GYL 65 30 66.0 74
Show 21422+3100 OSO 154 AB 25 15.3 76
Show 21422+3100 OSO 154 AC 239 15.8 76
Show 21422+3100 OSO 154 AD 166 16.4 76
Show 21422+3100 OSO 154 AE 108 19.6 76
Show 21487+3231 GRV 508 8 48.6 77
Show 21487+3233 GRV 510 98 26.5 79
Show 21532+3205 ES 2322 AB 52 35.7 84
Show 21532+3205 ES 2322 AD 352 62.1 84
Show 21532+3205 ES 2322 DE 276 5.0 85
Show 21532+3205 ES 2322 BC 147 5.1 85
Show 21457+2957 TDT3145 250 2.2 85
Show 21530+3210 KPP4254 337 2.2 86
Show 21458+2954 TDT3146 359 2.5 87
Show 21429+3014 TDT3119 157 2.7 89
Show 21409+3122 AG 275 13 10.9 91
Show 21412+3043 J 3143 262 6.6 92
Show 21509+3240 ES 382 AB 310 9.9 92
Show 21509+3240 ES 382 AC 322 58.1 92
Show 21509+3240 FYM 143 AF 298 26.0 92
Show 21509+3240 FYM 143 CD 90 46.9 93
Show 21509+3240 FYM 143 CE 112 45.1 93
Show 21509+3240 FYM 143 CF 160 36.3 93
Show 21455+2948 DAM 237 233 6.3 94
Show 21407+3056 GRV 490 328 31.7 95
Show 21487+3251 ES 2386 232 4.8 96
Show 21458+2945 DAM 236 143 5.9 96
Show 21544+3204 TDT3227 175 1.3 96
Show 21544+3206 COU1042 108 1.4 97
Show 21492+3254 ES 2265 25 3.4 100

 
 
WDS 21479+3117 : COMPONENTS
 
 
  A
B pa=352.6°
sep=16.30"
 
 
21479+3117 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 214753.80+311604.7 Mag 11.13 PmRA -16.00
PmDE -31.0 Tycho2 2718-02202-1
Tycho2
Tycho2 2718-02202-1 Pflag RAmdeg 326.97418656 DEmdeg 31.26799356
PmRA -17.1 PmDE -30.6 E RAmdeg 41 E DEmdeg 49
E pmRA 2.6 E pmDE 2.5 EpRAm 1988.63 EpDEm 1987.55
Num 3 Q RAmdeg 0.2 Q DEmdeg 0.8 Q pmRA 0.2
Q pmDE 0.8 BTmag 12.271 E BTmag 0.127 VTmag 11.134
E VTmag 0.062 Prox 999 TYC HIP
CCDM RAdeg 326.97423306 DEdeg 31.26806194 EpRA 1990 1.66
EpDE 1990 1.96 E RAdeg 41.7 E DEdeg 49.8 Posflg
Corr 0.1
 
 
21479+3117 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 214753.64+311620.9 Mag 12.6 PmRA -38.00
PmDE -23.0 Calc delta mag 1.47 Calc coord yes