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Current system
21579+6101
EVS 45 AC
IR Cep


Nearby doubles
18' : 21573+6118
BU 275

19' : 21597+6049
BVD 339

21' : 22005+6054
MLR 510

27' : 21556+6040
MLR 509

32' : 21598+6033
A 779

33' : 22023+6106
BU 695AB

35' : 21564+6029
TDT3250

41' : 22033+6051
STF2860AB

42' : 22014+6133
HDS3125

43' : 21543+6134
ES 1922

44' : 21576+6144
MLR 63

48' : 22005+6145
TDT3286

51' : 22049+6100
BU 474

52' : 21518+6129
STI1063AB

53' : 22051+6109
STI1087

54' : 22047+6120
ARY 44AB

58' : 21506+6024
STI1059

61' : 21599+6200
STI1079

62' : 21510+6137
STT 451

62' : 22061+6048
TDT3338

62' : 21549+6159
OSO 161AB

63' : 22065+6057
TDT3342

70' : 21502+6144
TDT3186

71' : 21569+5948
WAK 20

73' : 21559+5950
STT 537

74' : 22080+6100
HDS3143



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21579+6101 EVS 45 AC (IR Cep)

 
 
21h 57m 51.93s +61° 01' 07.9" P.A. 42.00 sep 18.2 mag 7.78,17.62 Sp G0 dist. 675.68 pc (2204.07 l.y.)
 
 
Coord 2000 21579+6101 Discov num EVS  45 Comp AC Coord arcsec 2000 21 57 51.93 +61 01 07.9
Date first 1999 Date last 2014 Obs 5
Pa first 42 Pa last 42.2 P.A. Now (θ) 42.2°
Sep first 18.3 Sep last 18.238 Sep. Now (ρ) 18.238"
Mag pri 7.78 Mag sec 17.62 delta mag (ΔM) 9.84 Spectral class G0 (yellow)
Pri motion ra -005 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N U (See Notes, Proper motion indicates non-physical)
This double is not physical.
 
 
21579+6101 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 19765 21 57 52 +61 01 08 MLR 17 AB 1992 13 22 0.2 8.30 8.30 0.00
Show IR Cep 19765 21 57 52 +61 01 08 EVS 45 AC 2014 5 42 18.2 7.78 17.62 9.84 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name IR Cep Constellation Cepheus SAO 19765 HIP 108426
Tycho2 4262-01009-1 Gaia DR2 2203988169026743936 HD 208960 BD BD+60 2321
Distance 675.68 Distance ly 2204.07
 
 
WDS 21579+6101 EVS 45 AC (IR Cep) : NOTES
 
 
discov_num notes refcode
MLR 17 Primary is the Cepheid IR Cep. Evs2016a
 
 
REFERENCES
 
 
refcode metd author reference
Evs2016a H3 - Evans, N.R., Bond, H.E., Schaefer, G.H., Mason, B.D., Tingle, E., Karovska, M., & 2016AJ....151..129E
Evs2016a Pillitteri, I.
Evs2016a AJ 151, 129, 2016
Evs2016a (some theta values replaced with more precise values from Evs2016b) 2016AJ....151..108E
 
 
DISCOVERER
 
 
idgroup discov author
1 MLR Muller, P.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21579+6101 EVS 45 AC 2011 2 42 18.1 7.78 17.62 G0 NU 215751.93+610107.9
21579+6101 EVS 45 AC 2014 5 42 18.2 7.78 17.62 G0 NU 215751.93+610107.9

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

 
 
WDS 21579+6101 EVS 45 AC (IR Cep) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21579+6101 EVS 45 AC (IR Cep) : MEASURES
 
 
No records found.

 
 
WDS 21579+6101 (IR Cep) : VIRTUAL EYEPIECE
 
 

21579+6101 MLR 17A mag 8.3 Sp G0 21579+6101 MLR 17B sep 0.1 P.A. 11.10 mag 8.3 21579+6101 EVS 45C sep 14.8 P.A. 23.70 mag 17.62 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 21579+6101 (IR Cep) : ALADIN DSS IMAGE @ 21h 57m 51.93s +61° 01' 07.9"
 
 
 
 
WDS 21579+6101 EVS 45 AC (IR Cep) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21579+6101 EVS 45AC distance=0' 21573+6118 BU 275 distance=18' 21597+6049 BVD 339 distance=19' 22005+6054 MLR 510 distance=21' 21556+6040 MLR 509 distance=27' 21598+6033 A 779 distance=32' 22023+6106 BU 695AB distance=33' 22023+6106 WAK 5AC distance=33' 21564+6029 TDT3250 distance=35' 22033+6051 STF2860AB distance=41' 22033+6051 STF2860AC distance=41' 22014+6133 HDS3125 distance=42' 21543+6134 ES 1922 distance=43' 21576+6144 MLR 63 distance=44' 22005+6145 TDT3286 distance=48' 22049+6100 BU 474 distance=51' 21518+6129 MRI 58BC distance=52' 21518+6129 STI1063AB distance=52' 22051+6109 STI1087 distance=53' 22047+6120 ARY 44AB distance=54' 22047+6120 ARY 44BC distance=54' 22020+6016 KPP4261BC distance=55' 21506+6024 STI1059 distance=58' 21599+6200 STI1079 distance=61' 21510+6137 STT 451 distance=62' 22061+6048 TDT3338 distance=62' 21549+6159 OSO 161AB distance=62' 21549+6159 OSO 161AC distance=62' 21549+6159 OSO 161AD distance=62' 21549+6159 OSO 161AE distance=62' 22065+6057 TDT3342 distance=63' 21502+6144 TDT3186 distance=70' 21569+5948 WAK 20 distance=71' 21559+5950 STT 537 distance=73' 22080+6100 HDS3143 distance=74' 22080+6107 STF2870 distance=74' 21565+5948 STT 458AB distance=75' 21565+5948 STT 458AC distance=75' 21564+6216 HU 973 distance=76' 22083+6054 STI1092 distance=77' 22084+6105 ES 1923BC distance=77' 22084+6105 ES 1923BD distance=77' 21485+6137 D 33AB distance=77' 21485+6137 MLB 176AC distance=77' 22084+6105 ES 1923AB distance=77' 22084+6105 ES 1923AD distance=77' 22071+6024 TDT3351 distance=78' 21521+6206 KR 56 distance=78' 21552+6217 TDT3239 distance=79' 22031+6214 STI1082 distance=82' 22051+6204 STI1088 distance=82' 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 21579+6101 MLR 17 AB 22 0.2
Show 21579+6101 EVS 45 AC 42 18.2
Show 21573+6118 BU 275 170 0.4 18
Show 21597+6049 BVD 339 246 13.3 19
Show 22005+6054 MLR 510 304 0.8 21
Show 21556+6040 MLR 509 274 1.5 27
Show 21598+6033 A 779 247 0.2 32
Show 22023+6106 BU 695 AB 148 3.1 33
Show 22023+6106 WAK 5 AC 201 14.2 33
Show 21564+6029 TDT3250 295 0.6 35
Show 22033+6051 STF2860 AB 257 13.3 41
Show 22033+6051 STF2860 AC 279 27.4 41
Show 22014+6133 HDS3125 3 0.2 42
Show 21543+6134 ES 1922 164 4.6 43
Show 21576+6144 MLR 63 216 1.0 44
Show 22005+6145 TDT3286 95 0.6 48
Show 22049+6100 BU 474 342 17.9 51
Show 21518+6129 MRI 58 BC 98 2.6 52
Show 21518+6129 STI1063 AB 88 9.8 52
Show 22051+6109 STI1087 329 14.2 53
Show 22047+6120 ARY 44 AB 347 80.0 54
Show 22047+6120 ARY 44 BC 342 81.5 54
Show 22020+6016 KPP4261 BC 265 5.5 55
Show 21506+6024 STI1059 156 3.3 58
Show 21599+6200 STI1079 45 8.8 61
Show 21510+6137 STT 451 219 4.2 62
Show 22061+6048 TDT3338 185 0.4 62
Show 21549+6159 OSO 161 AB 335 14.8 62
Show 21549+6159 OSO 161 AC 36 21.8 62
Show 21549+6159 OSO 161 AD 19 19.8 62
Show 21549+6159 OSO 161 AE 315 20.4 62
Show 22065+6057 TDT3342 101 2.9 63
Show 21502+6144 TDT3186 153 0.8 70
Show 21569+5948 WAK 20 258 4.0 71
Show 21559+5950 STT 537 203 1.9 73
Show 22080+6100 HDS3143 307 0.2 74
Show 22080+6107 STF2870 271 5.8 74
Show 21565+5948 STT 458 AB 348 1.0 75
Show 21565+5948 STT 458 AC 23 21.5 75
Show 21564+6216 HU 973 124 0.2 76
Show 22083+6054 STI1092 45 15.8 77
Show 22084+6105 ES 1923 BC 232 3.9 77
Show 22084+6105 ES 1923 BD 88 15.7 77
Show 21485+6137 D 33 AB 131 3.5 77
Show 21485+6137 MLB 176 AC 277 10.6 77
Show 22084+6105 ES 1923 AB 339 25.8 77
Show 22084+6105 ES 1923 AD 14 25.3 77
Show 22071+6024 TDT3351 200 1.2 78
Show 21521+6206 KR 56 299 4.7 78
Show 21552+6217 TDT3239 89 0.8 79
Show 22031+6214 STI1082 199 12.3 82

 
 
WDS 21579+6101 : COMPONENTS
 
 
  A B
B pa=11.1°
sep=0.14"
 
C pa=23.7°
sep=14.76"
pa=23.8°
sep=14.62"
 
 
21579+6101 A
 
 
Coord arcsec 2000 215751.93+610107.9 Mag 8.3 Spectral class G0 (yellow) PmRA -5.00
PmDE 0.0 SAO 19765 HIP 108426 Tycho2 4262-01009-1
HD 208960 BD BD+60 2321
Tycho2
Tycho2 4262-01009-1 Pflag RAmdeg 329.46636799 DEmdeg 61.01886983
PmRA -2.8 PmDE -0.1 E RAmdeg 5 E DEmdeg 6
E pmRA 1.3 E pmDE 1.5 EpRAm 1991.32 EpDEm 1991.27
Num 9 Q RAmdeg 0.8 Q DEmdeg 0.7 Q pmRA 0.8
Q pmDE 0.6 BTmag 8.916 E BTmag 0.017 VTmag 7.934
E VTmag 0.011 Prox 999 TYC T HIP 108426
CCDM RAdeg 329.46638111 DEdeg 61.01886972 EpRA 1990 1.69
EpDE 1990 1.70 E RAdeg 5.3 E DEdeg 5.6 Posflg
Corr 0.0
SAO
SAO 19765 DelFlag RA1950 PmRA1950 -0.0017
DE1950 PmDE1950 -0.008 Vmag 7.5 SpType G0
Double code Source 2 CatNum 1430 DM BD+60 2321
DMcomp BDsup HD 208960 M HD 0
GC RA1950rad 5.74355084 DE1950rad 1.06080358 PmRA2000 -0.0014
PmDE2000 -0.013
Hipparcos
Catalog H HIP 108426 Proxy RAhms 21 57 51.93
DEdms +61 01 07.9 Vmag 7.85 VarFlag 2 R Vmag T
RAdeg 329.466 DEdeg 61.0189 AstroRef Plx 1.38
CCDM 21579+6101 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 208960 BD BD+60 2321
CD CP Dm number +60 2321 VIred 0.87
SpType G0 R SpType Coord arcsec 2000 215751.93+610107.9
Hipparcos 2
HIP 108426 Sn 5 So 0 Nc 1
RArad 5.7502731551 DErad 1.0649802153 Plx 1.48 PmRA -4.87
PmDE -3.49 E RArad 0.33 E DErad 0.31 E Plx 0.37
E pmRA 0.46 E pmDE 0.42 Hpmag 8.0287 E Hpmag 0.0178
SHp 0.163 VA 1 BV 0.847 E BV 0.01
VI 0.86
CCDM
Ccdm 21579+6101 RComp Comp A Note1
Note2 Discov num DRAs -2.03 DDEs 8.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.3 Sp G0 PmNote *
PmRA 0 PmDE 4 Dm number +60 2321 Cat1 BD
Name2 +60 1430 Cat2 AGK2/3 HD 208960 M HD
ADS BDS M ADS BDS N IDS IDS 21548N6032A
HIC 108426
 
 
21579+6101 B
 
 
Coord arcsec 2000 215751.93+610108.0 Mag 8.3 Calc coord yes
CCDM
Ccdm 21579+6101 RComp Comp B Note1
Note2 Discov num MLR 17 DRAs DDEs
R dRAs Year 1968 Theta 290 Rho 0.2
Obs 1 Vmag 8.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21548N6032B
HIC 108426
 
 
21579+6101 C
 
 
Coord arcsec 2000 215752.75+610121.4 Mag 17.62 Calc delta mag 9.32 Calc coord yes