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Current system
21519+4221
HO 172 AB
HD 207966


Nearby doubles
15' : 21511+4209
COU1822AB

37' : 21491+4242
ARG 95

38' : 21552+4229
TDT3241

40' : 21533+4144
J 3152

42' : 21532+4141
DAM 241

44' : 21539+4256
ES 1461

46' : 21556+4241
KPP4258

47' : 21490+4254
TDT3172

47' : 21478+4212
TDT3158

48' : 21505+4135
TDS1149

52' : 21541+4307
POP 184

53' : 21521+4313
TDT3204

53' : 21518+4128
KPP4253

60' : 21548+4310
TDT3234

61' : 21540+4125
TDT3223

61' : 21473+4148
A 404AB

61' : 21530+4121
GRV 516

62' : 21474+4256
A 405

64' : 21490+4316
BRT1152

65' : 21462+4239
ES 1460AB

66' : 21532+4324
GRV 517

70' : 21489+4321
TDT3171

71' : 21490+4323
PKO 16

72' : 21583+4216
TDT3265

72' : 21462+4254
COU1979

72' : 21492+4326
PKO 17



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21519+4221 HO 172 AB (HD 207966)

 
 
21h 51m 52.93s +42° 20' 38.0" P.A. 82.00 sep 10.7 mag 7.93,11.26 Sp G5+M0 dist. 29.33 pc (95.67 l.y.)
 
 
Coord 2000 21519+4221 Discov num HO  172 Comp AB Coord arcsec 2000 21 51 52.93 +42 20 38.0
Date first 1886 Date last 2016 Obs 17
Pa first 88 Pa last 81.7 P.A. Now (θ) 81.7°
Sep first 10.5 Sep last 10.704 Sep. Now (ρ) 10.704"
Mag pri 7.93 Mag sec 11.26 delta mag (ΔM) 3.33 Spectral class G5+M0 (yellow/red)
Pri motion ra -175 Sec motion ra -175
Pri motion dec -306 Sec motion dec -306
Notes N V (See Notes, Proper motion indicates physical)
This double is physical.
 
 
21519+4221 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 207966 51378 21 51 53 +42 20 38 HO 172 AB 2016 17 82 10.7 7.93 11.26 3.33 <===
Show 51378 21 51 53 +42 20 38 HO 172 AC 2013 7 40 89.7 7.93 13.31 5.38
Show 51378 21 51 53 +42 20 38 HO 172 AD 2003 9 61 480.9 7.93 8.63 0.70
Show 51378 21 51 53 +42 20 38 FYM 113 AE 2015 4 20 64.4 7.93 14.96 7.03
Show 21 51 54 +42 20 39 JOD 22 BF 2008 1 48 2.1 11.26 17.50 6.24
Sextuple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 207966 Constellation Cygnus SAO 51378 HIP 107920
Tycho2 3193-02107-1 HD 207966 BD BD+41 4291 Distance 29.33
Distance ly 95.67
 
 
WDS 21519+4221 HO 172 AB (HD 207966) : NOTES
 
 
discov_num notes refcode
HO 172 AD: See ADS for rectangular measures.
AD: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
 
 
REFERENCES
 
 
refcode metd author reference
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
 
 
DISCOVERER
 
 
discov author
FYM Fay, M.
KIY Kiyaeva, O.V., Zhuchkov, R.Ya., Malogolovets, E.V., Orlov, V.V., Glukhova, A.V.,
KIY Balega, Yu., Yu. & Bikmaev, I.F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
21519+4221 HO 172 AB 2000 10 82 10.7 7.93 11.26 G5 +41 4291 N DV 215153.07+422040.6
21519+4221 HO 172 AB 2002 11 82 10.7 7.93 11.26 G5 +41 4291 NVD 215153.07+422040.6
21519+4221 HO 172 AB 2012 12 82 10.7 7.93 11.26 G5 +41 4291 NVD 215153.07+422040.6
21519+4221 HO 172 AB 2015 13 82 10.6 7.93 11.26 G5+M0 +41 4291 NV 215152.93+422038.0
21519+4221 HO 172 AB 2016 17 82 10.7 7.93 11.26 G5+M0 +41 4291 NV 215152.93+422038.0

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

 
 
WDS 21519+4221 HO 172 AB (HD 207966) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21519+4221 HO 172 AB (HD 207966) : MEASURES
 
 
Records found: 1
Show date username difficulty sep sep_sigma pa pa_sigma delta_mag # notes
Show 15/10/22 g.locatelli mean difficulty 10.64 0.10 81.76 0.46 3.10 1 Rc mag A 7.6 B 10.7
 
 
WDS 21519+4221 (HD 207966) : VIRTUAL EYEPIECE
 
 

21519+4221 HO 172A mag 7.93 Sp G5 21519+4221 JOD 22B sep 10.5 P.A. 84.00 mag 11.26 Sp M0 21519+4221 HO 172C sep 89.7 P.A. 39.60 mag 13.31 21519+4221 HO 172D sep 480.7 P.A. 61.20 mag 8.63 21519+4221 FYM 113E sep 64.4 P.A. 20.40 mag 14.96 21519+4221 JOD 22F sep 12.2 P.A. 78.20 mag 17.5 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21519+4221 (HD 207966) : ALADIN DSS IMAGE @ 21h 51m 52.93s +42° 20' 38.0"
 
 
 
 
WDS 21519+4221 HO 172 AB (HD 207966) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21519+4221 HO 172AB distance=0' 21519+4221 JOD 22BF distance=1' 21511+4209 COU1822AB distance=15' 21491+4242 ARG 95 distance=37' 21552+4229 TDT3241 distance=38' 21533+4144 J 3152 distance=40' 21532+4141 DAM 241 distance=42' 21539+4256 ES 1461 distance=44' 21556+4241 KPP4258 distance=46' 21490+4254 TDT3172 distance=47' 21478+4212 TDT3158 distance=47' 21505+4135 TDS1149 distance=48' 21541+4307 POP 184 distance=52' 21521+4313 TDT3204 distance=53' 21518+4128 KPP4253 distance=53' 21548+4310 TDT3234 distance=60' 21540+4125 TDT3223 distance=61' 21473+4148 A 404AB distance=61' 21473+4148 A 404AC distance=61' 21530+4121 GRV 516 distance=61' 21474+4256 A 405 distance=62' 21490+4316 BRT1152 distance=64' 21462+4239 ES 1460AB distance=65' 21462+4239 ES 1460AC distance=65' 21532+4324 GRV 517 distance=66' 21489+4321 TDT3171 distance=70' 21490+4323 PKO 16 distance=71' 21583+4216 TDT3265 distance=72' 21462+4254 COU1979 distance=72' 21492+4326 PKO 17 distance=72' 21525+4332 TDT3212 distance=72' 21456+4202 TDT3143 distance=73' 21461+4143 TDT3148 distance=75' 21531+4339 TDT3215 distance=80' 21552+4110 TDT3242 distance=80' 21454+4258 ES 1459 distance=82' 21593+4211 BRT1156 distance=84' 21443+4234 OSO 156AB distance=85' 21443+4234 OSO 156AC distance=85' 21443+4234 OSO 156AD distance=85' 21592+4158 A 406BC distance=85' 21448+4254 TDT3132 distance=85' 21592+4158 A 406AB distance=85' 21592+4158 A 406AD distance=85' 21494+4058 TDT3178 distance=88' 21512+4050 GRV 515 distance=91' 21443+4256 TDT3129 distance=92' 21556+4059 LDS5937 distance=93' 21545+4052 TDT3230 distance=94' 21489+4349 TDT3170 distance=95' 21594+4310 KPP4260 distance=97' 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 21519+4221 HO 172 AB 82 10.7 0
Show 21519+4221 HO 172 AC 40 89.7 0
Show 21519+4221 HO 172 AD 61 480.9 0
Show 21519+4221 FYM 113 AE 20 64.4 0
Show 21519+4221 JOD 22 BF 48 2.1 1
Show 21511+4209 COU1822 AB 19 0.2 15
Show 21491+4242 ARG 95 338 23.1 37
Show 21552+4229 TDT3241 345 2.2 38
Show 21533+4144 J 3152 238 4.6 40
Show 21532+4141 DAM 241 311 8.0 42
Show 21539+4256 ES 1461 352 6.1 44
Show 21556+4241 KPP4258 257 28.6 46
Show 21490+4254 TDT3172 164 0.4 47
Show 21478+4212 TDT3158 230 2.7 47
Show 21505+4135 TDS1149 285 0.7 48
Show 21541+4307 POP 184 241 11.6 52
Show 21521+4313 TDT3204 85 2.3 53
Show 21518+4128 KPP4253 269 4.3 53
Show 21548+4310 TDT3234 343 2.0 60
Show 21540+4125 TDT3223 123 0.9 61
Show 21473+4148 A 404 AB 100 3.8 61
Show 21473+4148 A 404 AC 294 14.0 61
Show 21530+4121 GRV 516 151 14.3 61
Show 21474+4256 A 405 277 1.9 62
Show 21490+4316 BRT1152 231 6.7 64
Show 21462+4239 ES 1460 AB 8 1.8 65
Show 21462+4239 ES 1460 AC 238 20.3 65
Show 21532+4324 GRV 517 212 45.9 66
Show 21489+4321 TDT3171 286 0.5 70
Show 21490+4323 PKO 16 96 5.9 71
Show 21583+4216 TDT3265 147 0.4 72
Show 21462+4254 COU1979 261 0.4 72
Show 21492+4326 PKO 17 149 13.6 72
Show 21525+4332 TDT3212 39 1.7 72
Show 21456+4202 TDT3143 34 0.5 73
Show 21461+4143 TDT3148 18 0.4 75
Show 21531+4339 TDT3215 110 0.8 80
Show 21552+4110 TDT3242 200 2.3 80
Show 21454+4258 ES 1459 282 2.3 82
Show 21593+4211 BRT1156 103 3.6 84
Show 21443+4234 OSO 156 AB 331 7.6 85
Show 21443+4234 OSO 156 AC 57 16.1 85
Show 21443+4234 OSO 156 AD 18 22.7 85
Show 21592+4158 A 406 BC 299 1.8 85
Show 21448+4254 TDT3132 293 2.0 85
Show 21592+4158 A 406 AB 4 33.8 85
Show 21592+4158 A 406 AD 116 22.6 85
Show 21494+4058 TDT3178 251 0.6 88
Show 21512+4050 GRV 515 313 28.2 91
Show 21443+4256 TDT3129 76 0.9 92
Show 21556+4059 LDS5937 141 6.3 93

 
 
WDS 21519+4221 : COMPONENTS
 
 
  A B C D E
B pa=84.0°
sep=10.48"
 
C pa=39.6°
sep=89.74"
pa=34.5°
sep=82.58"
 
D pa=61.2°
sep=480.72"
pa=60.7°
sep=471.08"
pa=65.9°
sep=398.62"
 
E pa=20.4°
sep=64.39"
pa=11.5°
sep=60.46"
pa=255.8°
sep=35.85"
pa=246.7°
sep=433.97"
 
F pa=78.2°
sep=12.22"
pa=47.7°
sep=2.08"
pa=214.2°
sep=80.56"
pa=240.7°
sep=469.06"
pa=190.3°
sep=58.80"
 
 
21519+4221 A
 
 
Name HD 207966 Coord arcsec 2000 215152.93+422038.0 Mag 7.93 Spectral class G5 (yellow)
PmRA -175.00 PmDE -306.0 SAO 51378 HIP 107920
Tycho2 3193-02107-1 HD 207966 BD BD+41 4291
Tycho2
Tycho2 3193-02107-1 Pflag RAmdeg 327.97054621 DEmdeg 42.34388034
PmRA -173.7 PmDE -305.4 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.28 EpDEm 1991.43
Num 8 Q RAmdeg 1.0 Q DEmdeg 0.6 Q pmRA 1.0
Q pmDE 0.7 BTmag 8.806 E BTmag 0.016 VTmag 7.925
E VTmag 0.011 Prox 107 TYC T HIP 107920
CCDM A RAdeg 327.97109722 DEdeg 42.34458528 EpRA 1990 1.56
EpDE 1990 1.69 E RAdeg 5.3 E DEdeg 4.8 Posflg
Corr 0.2
SAO
SAO 51378 DelFlag RA1950 PmRA1950 -0.0148
DE1950 PmDE1950 -0.322 Vmag 7.6 SpType G5
Double code Source 4 CatNum 2093 DM BD+41 4291
DMcomp BDsup HD 207966 M HD 0
GC RA1950rad 5.71539475 DE1950rad 0.73500393 PmRA2000 -0.0145
PmDE2000 -0.326
Hipparcos
Catalog H HIP 107920 Proxy RAhms 21 51 53.07
DEdms +42 20 40.6 Vmag 7.85 VarFlag R Vmag H
RAdeg 327.971 DEdeg 42.3446 AstroRef A Plx 33.93
CCDM -175.22 - N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 83 Rho 10.727 HD BD BD+41 4291
CD CP Dm number +41 4291 VIred 0.82
SpType G5 R SpType Coord arcsec 2000 215153.07+422040.6
Hipparcos 2
HIP 107920 Sn 15 So 3 Nc 2
RArad 5.7241759028 DErad 0.739053064 Plx 34.09 PmRA -175.18
PmDE -305.83 E RArad 0.52 E DErad 0.58 E Plx 0.77
E pmRA 0.64 E pmDE 0.72 Hpmag E Hpmag 0.0061
SHp 0.013 VA 0 BV 0.798 E BV 0.008
VI 0.83
CCDM
Ccdm 21519+4221 RComp Comp A Note1
Note2 Discov num DRAs -0.98 DDEs -21.9
R dRAs 10 Year Theta Rho
Obs 4 Vmag 7.8 Sp G5 PmNote *
PmRA -159 PmDE -294 Dm number +41 4291 Cat1 BD
Name2 +42 2093 Cat2 AGK2/3 HD 207966 M HD
ADS BDS A15400 M ADS BDS N IDS IDS 21479N4153A
HIC 107920
 
 
21519+4221 B
 
 
Coord arcsec 2000 215153.87+422039.1 Coord calc 215153.87+422039.1 Mag 11.26 Spectral class M0 (red)
PmRA -175.00 PmDE -306.0 Delta magnitude 3.33
CCDM
Ccdm 21519+4221 RComp Comp B Note1
Note2 Discov num HO 172 DRAs DDEs
R dRAs Year 1886 Theta 087 Rho 10.5
Obs 4 Vmag 12.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15400 M ADS BDS N IDS IDS 21479N4153B
HIC
 
 
21519+4221 C
 
 
Coord arcsec 2000 215158.09+422147.2 Mag 13.31 PmRA 2.00 PmDE -3.0
Delta magnitude 5.38 Coordinate calculated yes
CCDM
Ccdm 21519+4221 RComp Comp C Note1
Note2 Discov num HO 172 DRAs DDEs
R dRAs Year 1911 Theta 050 Rho 55.0
Obs 3 Vmag 12.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15400 M ADS BDS N IDS IDS 21479N4153C
HIC
 
 
21519+4221 D
 
 
Coord arcsec 2000 215230.94+422429.7 Mag 8.63 PmRA 39.00 PmDE 13.0
SAO 51393 HIP 107979 Tycho2 3193-01773-1 HD 208056
BD BD+41 4299 Delta magnitude 0.7 Coordinate calculated yes
Tycho2
Tycho2 3193-01773-1 Pflag RAmdeg 328.13078133 DEmdeg 42.40522560
PmRA 39.3 PmDE 14.4 E RAmdeg 7 E DEmdeg 6
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.06 EpDEm 1991.23
Num 6 Q RAmdeg 0.7 Q DEmdeg 0.7 Q pmRA 0.7
Q pmDE 0.7 BTmag 9.004 E BTmag 0.016 VTmag 8.626
E VTmag 0.013 Prox 999 TYC T HIP 107979
CCDM RAdeg 328.13065611 DEdeg 42.40519250 EpRA 1990 1.57
EpDE 1990 1.66 E RAdeg 6.6 E DEdeg 6.0 Posflg
Corr 0.1
SAO
SAO 51393 DelFlag RA1950 PmRA1950 0.0044
DE1950 PmDE1950 0.025 Vmag 8.2 SpType F0
Double code Source 4 CatNum 2097 DM BD+41 4299
DMcomp BDsup HD 208056 M HD 0
GC RA1950rad 5.7181175 DE1950rad 0.73599374 PmRA2000 0.0046
PmDE2000 0.021
Hipparcos
Catalog H HIP 107979 Proxy RAhms 21 52 31.36
DEdms +42 24 18.7 Vmag 8.59 VarFlag R Vmag H
RAdeg 328.131 DEdeg 42.4052 AstroRef Plx 4.24
CCDM 38.95 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 208056 BD BD+41 4299
CD CP Dm number +41 4299 VIred 0.38
SpType F0 R SpType Coord arcsec 2000 215231.36+422418.7
Hipparcos 2
HIP 107979 Sn 5 So 0 Nc 1
RArad 5.726960281 DErad 0.7401101903 Plx 5.57 PmRA 38.95
PmDE 12.07 E RArad 0.61 E DErad 0.65 E Plx 0.9
E pmRA 0.75 E pmDE 0.79 Hpmag E Hpmag 0.0018
SHp 0.019 VA 0 BV 0.34 E BV 0.014
VI 0.4
CCDM
Ccdm 21519+4221 RComp Comp D Note1
Note2 Discov num HO 172 DRAs 37.40 DDEs 199.0
R dRAs 10 Year 1911 Theta 036 Rho 189.7
Obs 1 Vmag 9.0 Sp F0 PmNote *
PmRA 43 PmDE 20 Dm number +41 4299 Cat1 BD
Name2 +42 2097 Cat2 AGK2/3 HD 208056 M HD
ADS BDS A15400 M ADS BDS N N IDS IDS 21479N4153D
HIC 107979
 
 
21519+4221 E
 
 
Coord arcsec 2000 215154.95+422138.4 Mag 14.96 Delta magnitude 7.03 Coordinate calculated yes
 
 
21519+4221 F
 
 
Coord arcsec 2000 215154.01+422040.5 Mag 17.5 Delta magnitude 9.57 Coordinate calculated yes