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Doubles in session


Current system
23186+6807
STF 3001 AB
Omi Cep


Nearby doubles
28' : 23153+6746
HJ 1865

33' : 23212+6737
OSO 194

36' : 23241+6748
TDT4019

40' : 23257+6804
HDS3334

41' : 23234+6736
HDS3329

48' : 23260+6743
KPP2172

49' : 23268+6752
HDS3337

50' : 23119+6736
HU 996AB

51' : 23272+6824
KPP1832

53' : 23096+6822
KPP4303

55' : 23095+6826
FAL 75

59' : 23261+6728
SKF2747

59' : 23261+6727
MLR 94

64' : 23138+6904
A 787

67' : 23303+6822
MLB 319

78' : 23244+6917
A 789

81' : 23213+6927
LDS5078

82' : 23068+6721
AZC 185

98' : 23017+6748
HU 993

98' : 23356+6750
CLZ 92

98' : 23101+6642
AZC 186

101' : 23365+6813
FOX 49

104' : 23003+6755
GIC 187

104' : 23365+6742
UC 292

105' : 23156+6950
MLB 318AB

106' : 23315+6925
HDS3350



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.

23186+6807 STF 3001 AB (Omi Cep)

 
 
23h 18m 37.41s +68° 06' 41.1" P.A. 224.00 sep 3.4 mag 4.97,7.28 Sp G8III dist. 62.27 pc (203.12 l.y.)
 
 
Coord 2000 23186+6807 Discov num STF3001 Comp AB Coord arcsec 2000 23 18 37.41 +68 06 41.1
Date first 1828 Date last 2022 Obs 240
Pa first 174 Pa last 223.8 P.A. Now (θ) 223.8°
Sep first 2.0 Sep last 3.44 Sep. Now (ρ) 3.44"
Mag pri 4.97 Mag sec 7.28 delta mag (ΔM) 2.31 Spectral class G8III (yellow)
Pri motion ra +053 Sec motion ra +046
Pri motion dec +024 Sec motion dec +013
Notes N O (See Notes, Orbital solution)
rPM=0.224 (< 0.3, Physical double)
This double is physical.
 
 
23186+6807 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Omi Cep 20554 23 18 37 +68 06 41 STF 3001 AB 2022 240 224 3.4 4.97 7.28 2.31 Y <===
Show 20554 23 18 37 +68 06 41 STF 3001 AC 2012 2 356 44.0 4.97 12.90 7.93
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Omi Cep Var name NSV14495 Cep Constellation Cepheus SAO 20554
HIP 115088 Tycho2 4478-01361-1 Gaia DR2 2213911506281421824 HD 219916
HR 8872 GC 32463 ADS 16666 BD BD+67 1514
Bayer Omicron Cephei Bayer name Omi Cep Flamsteed 34 Cephei Flamsteed name 34 Cep
Distance 62.27 Distance ly 203.12 Bayer greek ο Cep
 
 
ORBITAL ELEMENTS
 
 
Period (P)2198.7243y± 954.5756 Periastron (T)1744.0458y± 359.5156 Semi-major axis (a)9.52716a± 5.13334
Eccentricity (e)0.91375± 0.1455 Inclination (i)71.159°± 12.139 Longitude of periastron (ω)289.955°± 31.201
Node (Ω)137.169°± 64.522 Notesn ReferenceIzm2019
Equinox Last observation2014 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 219.8 3.303
2001 220.0 3.310
2002 220.2 3.316
2003 220.3 3.323
2004 220.5 3.329
2005 220.7 3.335
2006 220.9 3.342
2007 221.0 3.348
2008 221.2 3.355
2009 221.4 3.361
2010 221.5 3.368
2011 221.7 3.374
2012 221.9 3.381
2013 222.1 3.387
2014 222.2 3.394
2015 222.4 3.400
2016 222.6 3.407
2017 222.7 3.413
2018 222.9 3.420
2019 223.1 3.426
2020 223.2 3.433
2021 223.4 3.440
2022 223.6 3.446
2023 223.7 3.453
2024 223.9 3.459
2025 224.1 3.466
2026 224.2 3.473
2027 224.4 3.479
2028 224.5 3.486
2029 224.7 3.492
2030 224.9 3.499


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds23186%2B6807c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 23186+6807 STF 3001 AB (Omi Cep) : NOTES
 
 
discov_num notes refcode
STF3001 omi Cep = 34 Cep. A premature orbit has been computed.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
System mass 3.65 +-0.60 Msun. G8III spectral type of primary
confirmed. Doc2003d
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Doc2003d orb - Docobo, J.A., Tamazian, V.S., Andrade, M., & Melikian, N.D. 2003AJ....126.1522D
Doc2003d AJ 126, 1522, 2003
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
23186+6807 STF3001 AB 2007 216 221 3.2 4.97 7.28 G8III NOD 231837.41+680641.1
23186+6807 STF3001 AB 2011 223 222 3.2 4.97 7.28 G8III NOD 231837.41+680641.1
23186+6807 STF3001 AB 2012 224 222 3.2 4.97 7.28 G8III NOD 231837.41+680641.1
23186+6807 STF3001 AB 2014 229 222 3.5 4.97 7.28 G8III NO 231837.41+680641.1
23186+6807 STF3001 AB 2017 233 222 3.3 4.97 7.28 G8III NO 231837.41+680641.1
23186+6807 STF3001 AB 2018 234 224 3.4 4.97 7.28 G8III NO 231837.41+680641.1
23186+6807 STF3001 AB 2020 239 223 3.4 4.97 7.28 G8III NO 231837.41+680641.1
23186+6807 STF3001 AB 2022 240 224 3.4 4.97 7.28 G8III NO 231837.41+680641.1

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

 
 
WDS 23186+6807 STF 3001 AB (Omi Cep) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 22/11/14 Daedalus1 mean difficulty separated 226 very interesting A very classy double! Easily separated. Primary very much brighter than the companion. Both stars the same color: yellow-white.

 
 
WDS 23186+6807 STF 3001 AB (Omi Cep) : MEASURES
 
 
Records found: 1
Show date username difficulty sep sep_sigma pa pa_sigma delta_mag # notes
Show 22/11/14 Daedalus1 mean difficulty 3.60 0.07 226.00 0.00 2.31 12 Pickering 6, good.
 
 
WDS 23186+6807 (Omi Cep) : VIRTUAL EYEPIECE
 
 

23186+6807 STF3001A mag 4.97 Sp G8III 23186+6807 STF3001B sep 2.6 P.A. 199.70 mag 7.28 23186+6807 STF3001C sep 43.9 P.A. 358.30 mag 12.9 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 23186+6807 (Omi Cep) : ALADIN DSS IMAGE @ 23h 18m 37.41s +68° 06' 41.1"
 
 
 
 
WDS 23186+6807 STF 3001 AB (Omi Cep) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

23186+6807 STF3001AB distance=0' 23153+6746 HJ 1865 distance=28' 23212+6737 OSO 194 distance=33' 23241+6748 TDT4019 distance=36' 23257+6804 HDS3334 distance=40' 23234+6736 HDS3329 distance=41' 23260+6743 KPP2172 distance=48' 23268+6752 HDS3337 distance=49' 23119+6736 HU 996AB distance=50' 23119+6736 HU 996AC distance=50' 23272+6824 KPP1832 distance=51' 23096+6822 KPP4303 distance=53' 23095+6826 FAL 75 distance=55' 23261+6728 SKF2747 distance=59' 23261+6727 MLR 94 distance=59' 23138+6904 A 787 distance=64' 23303+6822 MLB 319 distance=67' 23244+6917 A 789 distance=78' 23213+6927 LDS5078 distance=81' 23068+6721 AZC 185 distance=82' 23017+6748 HU 993 distance=98' 23356+6750 CLZ 92 distance=98' 23101+6642 AZC 186 distance=98' 23365+6813 FOX 49 distance=101' 23003+6755 GIC 187 distance=104' 23365+6742 UC 292 distance=104' 23156+6950 MLB 318AB distance=105' 23156+6950 MLB 318AC distance=105' 23315+6925 HDS3350 distance=106' 23326+6658 MLR 100 distance=106' 23356+6722 TDS1217 distance=106' 23378+6813 BU 855 distance=108' 23278+6627 SKF2617 distance=113' 23016+6912 OL 224 distance=114' 23181+6609 MLB1103 distance=118' 22589+6902 GIC 186 distance=122' 23384+6911 CVR 289 distance=126' 23309+6954 HJ 1890AB distance=127' 23309+6954 VBS 38AC distance=127' 23185+7014 LDS2034 distance=128' 23353+6937 MLB 320 distance=129' 23233+6559 WIS 385 distance=131' 23088+7006 HJ 1851 distance=131' 23094+7012 A 786 distance=135' 23188+7025 HDS3320 distance=139' 23110+6555 AG 290 distance=140' 23107+7020 RAO 679 distance=141' 23101+7026 MLB 437 distance=145' 23115+6543 SKF2616 distance=150' 23126+7038 MLB 438 distance=154' 23273+6537 BU 1148 distance=158' 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 23186+6807 STF3001 AB 224 3.4
Show 23186+6807 STF3001 AC 356 44.0
Show 23153+6746 HJ 1865 214 7.3 28
Show 23212+6737 OSO 194 354 17.5 33
Show 23241+6748 TDT4019 86 0.9 36
Show 23257+6804 HDS3334 279 0.1 40
Show 23234+6736 HDS3329 155 15.4 41
Show 23260+6743 KPP2172 57 17.8 48
Show 23268+6752 HDS3337 183 3.4 49
Show 23119+6736 HU 996 AB 208 2.3 50
Show 23119+6736 HU 996 AC 185 18.8 50
Show 23272+6824 KPP1832 70 14.2 51
Show 23096+6822 KPP4303 339 16.7 53
Show 23095+6826 FAL 75 307 8.7 55
Show 23261+6728 SKF2747 166 7.4 59
Show 23261+6727 MLR 94 340 3.7 59
Show 23138+6904 A 787 17 2.8 64
Show 23303+6822 MLB 319 126 6.3 67
Show 23244+6917 A 789 85 2.2 78
Show 23213+6927 LDS5078 180 28.7 81
Show 23068+6721 AZC 185 14 17.4 82
Show 23017+6748 HU 993 215 2.1 98
Show 23356+6750 CLZ 92 331 133.9 98
Show 23101+6642 AZC 186 14 17.1 98
Show 23365+6813 FOX 49 173 3.1 101
Show 23003+6755 GIC 187 29 12.1 104
Show 23365+6742 UC 292 296 13.6 104
Show 23156+6950 MLB 318 AB 245 3.2 105
Show 23156+6950 MLB 318 AC 237 9.8 105
Show 23315+6925 HDS3350 66 1.0 106
Show 23326+6658 MLR 100 20 1.0 106
Show 23356+6722 TDS1217 29 0.9 106
Show 23378+6813 BU 855 198 0.8 108
Show 23278+6627 SKF2617 341 69.6 113
Show 23016+6912 OL 224 48 6.9 114
Show 23181+6609 MLB1103 201 9.3 118
Show 22589+6902 GIC 186 233 21.5 122
Show 23384+6911 CVR 289 171 69.7 126
Show 23309+6954 HJ 1890 AB 238 8.6 127
Show 23309+6954 VBS 38 AC 144 43.7 127
Show 23185+7014 LDS2034 209 4.0 128
Show 23353+6937 MLB 320 345 5.0 129
Show 23233+6559 WIS 385 9 999.9 131
Show 23088+7006 HJ 1851 342 3.4 131
Show 23094+7012 A 786 155 1.9 135
Show 23188+7025 HDS3320 307 1.0 139
Show 23110+6555 AG 290 265 14.7 140
Show 23107+7020 RAO 679 39 0.8 141
Show 23101+7026 MLB 437 138 4.3 145
Show 23115+6543 SKF2616 324 11.3 150
Show 23126+7038 MLB 438 44 2.8 154

 
 
WDS 23186+6807 : COMPONENTS
 
 
  A B
B pa=199.7°
sep=2.64"
 
C pa=358.3°
sep=43.88"
pa=359.5°
sep=46.35"
 
 
23186+6807 A
 
 
Name Omi Cep Coord arcsec 2000 231837.41+680641.1 Mag 4.97 Spectral class G8III (yellow)
PmRA 53.00 PmDE 24.0 SAO 20554 HIP 115088
Tycho2 4478-01361-1 HD 219916 HR 8872 GC 32463
BD BD+67 1514 Bayer Omicron Cephei Bayer name Omi Cep Flamsteed 34 Cephei
Flamsteed name 34 Cep
Tycho2
Tycho2 4478-01361-1 Pflag RAmdeg 349.65620785 DEmdeg 68.11147467
PmRA 53.3 PmDE 24.2 E RAmdeg 3 E DEmdeg 3
E pmRA 1.9 E pmDE 2.0 EpRAm 1991.59 EpDEm 1991.64
Num 3 Q RAmdeg 0.7 Q DEmdeg 1.0 Q pmRA 0.7
Q pmDE 0.9 BTmag 6.002 E BTmag 0.014 VTmag 4.971
E VTmag 0.009 Prox 33 TYC T HIP 115088
CCDM A RAdeg 349.65587472 DEdeg 68.11141861 EpRA 1990 1.62
EpDE 1990 1.66 E RAdeg 3.3 E DEdeg 3.3 Posflg D
Corr 0.0
SAO
SAO 20554 DelFlag RA1950 PmRA1950 0.0102
DE1950 PmDE1950 0.022 Vmag 4.9 SpType G5
Double code Source 70 CatNum 32463 DM BD+67 1514
DMcomp BDsup HD 219916 M HD 0
GC 32463 RA1950rad 6.09364471 DE1950rad 1.18399316 PmRA2000 0.0105
PmDE2000 0.016
Hipparcos
Catalog H HIP 115088 Proxy H RAhms 23 18 37.41
DEdms +68 06 41.1 Vmag 4.75 VarFlag R Vmag G
RAdeg 349.656 DEdeg 68.1114 AstroRef A Plx 15.48
CCDM 23186+6807 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 218 Rho 3.278 HD 219916 BD BD+67 1514
CD CP Dm number +67 1514 VIred 0.86
SpType K0III R SpType Coord arcsec 2000 231837.41+680641.1
Hipparcos 2
HIP 115088 Sn 15 So 3 Nc 2
RArad 6.1026460409 DErad 1.1887685048 Plx 16.06 PmRA 54.33
PmDE 10.11 E RArad 0.3 E DErad 0.3 E Plx 0.36
E pmRA 0.37 E pmDE 0.35 Hpmag 4.904 E Hpmag 0.0006
SHp 0.005 VA 0 BV 0.836 E BV 0.002
VI 0.86
CCDM
Ccdm 23186+6807 RComp Comp A Note1
Note2 Discov num DRAs 1.52 DDEs -18.6
R dRAs 10 Year Theta Rho
Obs 3 Vmag 5.0 Sp G5 PmNote *
PmRA 57 PmDE 21 Dm number +67 1514 Cat1 BD
Name2 +67 1062 Cat2 AGK2/3 HD 219916 M HD
ADS BDS A16666 M ADS BDS N IDS IDS 23145N6734A
HIC 115088
 
 
23186+6807 B
 
 
Coord arcsec 2000 231837.25+680638.6 Mag 7.28 PmRA 46.00 PmDE 13.0
Calc delta mag 2.31 Calc coord yes
CCDM
Ccdm 23186+6807 RComp Comp B Note1 *
Note2 Discov num STF3001 DRAs DDEs
R dRAs Year 1832 Theta Rho
Obs 99 Vmag 7.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A16666 M ADS BDS N IDS IDS 23145N6734B
HIC 115088
 
 
23186+6807 C
 
 
Coord arcsec 2000 231837.18+680725.0 Mag 12.9 Calc delta mag 7.93 Calc coord yes
CCDM
Ccdm 23186+6807 RComp Comp C Note1
Note2 Discov num STF3001 DRAs DDEs
R dRAs Year 1912 Theta 004 Rho 45.6
Obs 1 Vmag 12.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A16666 M ADS BDS N IDS IDS 23145N6734C
HIC