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Doubles in session


Current system
23393+7738
NHR 9 AB
Errai


Nearby doubles
13' : 23431+7740
LDS2051

14' : 23395+7752
HU 793

27' : 23312+7741
MLR 274

28' : 23308+7742
MLR 273

31' : 23299+7747
LDS2045

33' : 23307+7755
UC 4970

39' : 23513+7740
TDT4237

48' : 23408+7825
LOC 560

57' : 23296+7825
MLR 299

62' : 23239+7704
STF3011

64' : 23397+7842
WSI 41

64' : 23567+7709
TDT4285

66' : 23402+7843
WFC 243

75' : 23551+7645
SKF2782

83' : 23580+7836
LDS2062

83' : 23547+7633
TDT4263

84' : 23534+7629
TDT4255

87' : 23548+7850
LOC 561

88' : 23564+7848
LOC 559

90' : 23275+7618
WFC 242

98' : 23508+7909
MLR 300

102' : 23438+7918
KPP1755

103' : 23194+7900
LDS2035AB

103' : 23546+7910
LDS2059

106' : 23568+7909
WNO 59AB

120' : 23306+7933
LDS2046



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.

23393+7738 NHR 9 AB (Errai)

 
 
23h 39m 20.98s +77° 37' 55.1" P.A. 215.00 sep 1.8 mag 1.04,7.30 Sp K1III dist. 14.1 pc (45.99 l.y.)
 
 
Coord 2000 23393+7738 Discov num NHR   9 Comp AB Coord arcsec 2000 23 39 20.98 +77 37 55.1
Date first 2006 Date last 2020 Obs 8
Pa first 257 Pa last 214.6 P.A. Now (θ) 214.6°
Sep first 0.9 Sep last 1.787 Sep. Now (ρ) 1.787"
Mag pri 1.04 Mag sec 7.30 delta mag (ΔM) 6.26 Spectral class K1III (yellow-orange)
Pri motion ra -049 Sec motion ra
Pri motion dec +127 Sec motion dec
Notes N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Errai Var name NSV14656 Cep Constellation Cepheus SAO 10818
HIP 116727 Tycho2 4606-03584-1 Gaia DR2 2281778105591104768 HD 222404
HR 8974 GC 32875 GL Gl 903 BD BD+76 928
Bayer Gamma Cephei Bayer name Gam Cep Flamsteed 35 Cephei Flamsteed name 35 Cep
FK5 893 Distance 14.1 Distance ly 45.99 Bayer greek γ Cep
 
 
ORBITAL ELEMENTS
 
 
Period (P)67.5y± 1.4 Periastron (T)1991.605y± 0.031 Semi-major axis (a)1.467a± 0.046
Eccentricity (e)0.4112± 0.0063 Inclination (i)119.3°± 1 Longitude of periastron (ω)161.01°± 0.4
Node (Ω)18.04°± 0.98 Notesn ReferenceNhr2007
Equinox Last observation2006 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 142.1 0.687
2001 130.9 0.669
2002 119.4 0.669
2003 108.2 0.688
2004 97.9 0.725
2005 88.8 0.776
2006 80.9 0.838
2007 74.2 0.908
2008 68.4 0.983
2009 63.5 1.060
2010 59.3 1.139
2011 55.6 1.217
2012 52.3 1.294
2013 49.5 1.369
2014 46.9 1.441
2015 44.5 1.510
2016 42.4 1.576
2017 40.4 1.638
2018 38.5 1.696
2019 36.8 1.750
2020 35.2 1.799
2021 33.6 1.844
2022 32.2 1.885
2023 30.8 1.921
2024 29.4 1.951
2025 28.1 1.977
2026 26.8 1.998
2027 25.5 2.014
2028 24.2 2.024
2029 23.0 2.029
2030 21.7 2.028


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


 
  


wds23393%2B7738a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier23393+7738
coord_arcsec_2000233920.98+773755.1
Period (P)902.9d (2.47y)± 3.5 Periastron (T)53147d (2004.387y)± 71 Semi-major axis (a)332.4m± 7.7
Eccentricity (e)0.115± 0.058 Inclination (i)° Longitude of periastron (ω)63°± 27
Node (Ω)° Notes ReferenceNhr2007
Equinox Last observation2006 Grade7(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 157.3 0.331
2001-01-01 281.1 0.361
2002-01-01 78.7 0.295
2003-01-01 225.4 0.368
2004-01-01 354.8 0.315
2005-01-01 165.4 0.336
2006-01-01 288.0 0.357
2007-01-01 88.9 0.297
2008-01-01 231.9 0.370
2009-01-01 4.0 0.310
2010-01-01 173.1 0.342
2011-01-01 295.1 0.353
2012-01-01 98.9 0.300
2013-01-01 238.4 0.370
2014-01-01 13.4 0.305
2015-01-01 180.7 0.347
2016-01-01 302.3 0.348
2017-01-01 108.7 0.304
2018-01-01 244.9 0.371
2019-01-01 23.1 0.301
2020-01-01 188.0 0.351
2021-01-01 309.8 0.344
2022-01-01 118.2 0.308
2023-01-01 251.5 0.370
2024-01-01 33.1 0.298
2025-01-01 195.2 0.355
2026-01-01 317.5 0.338
2027-01-01 127.5 0.313
2028-01-01 258.0 0.369
2029-01-01 43.2 0.296
2030-01-01 202.2 0.359


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


 
  


 
 
 
WDS 23393+7738 NHR 9 AB (Errai) : NOTES
 
 
discov_num notes refcode
NHR 9 = Gam Cep = Errai.
Neuhauser et al. (2007)resolved the wide pair of the gam Cep triple
system using the Subaru AO system. Their combined solution yielded
masses for Aa and B of 1.40 +/- 0.12 and 0.409 +/- 0.018 Msun, plus a
mass function for the planetary companion (M_Ab sin i) of 1.60 +/-
0.13 Mjup. Physical separation for the AB pair is 20.18 +/- 0.66 au. Nhr2007
NPOI Limb-darkened diameter 3.24 +/- 0.03 mas, NOI1999
R = 4.79 +/- 0.06 \rsun.
CHARA Array Limb-darkened diameter 3.302 +/- 0.029 mas. CIA2009a
R = 5.01 +/- 0.05 \rsun, L = 11.4 +/- 0.0 \lsun,
Teff = 4744 +/- 21 K.
NPOI Limb-darkened diameter 3.254 +/- 0.020 mas, Sp = K1III, NOI2018
R = 4.93 +/- 0.04 \rsun, Teff = 4792 +/- 62 K, L = 11.6 +/- 0.6 \lsun,
M = 1.41 +/- 0.08 \msun, Age = 3.25 +/- 0.63 Gyr.
 
 
REFERENCES
 
 
refcode metd author reference
CIA2009a not j Baines, E.K., McAlister, H.A., ten Brummelaar, T.A., Sturmann, J., Sturmann, L., 2009ApJ...701..154B
CIA2009a Turner, N.H. & Ridgway, S.T. .
CIA2009a ApJ 701, 154, 2009 .
Nhr2007 Ao j Neuhauser, R., Mugrauer, M., Fukagawa, M., Torres, G., & Schmidt, T. 2007A&A...462..777N
Nhr2007 +Ss A&A 462, 777, 2007
NOI1999 not j Nordgren, T.E., Germain, M.E., Benson, J.A., Mozurkewich, D., Sudol, J.J., Elias, 1999AJ....118.3032N
NOI1999 II, N.M., Hajian, A.R., White, N.M., Hutter, D.J., Johnston, K.J., Gauss, F.S., .
NOI1999 Armstrong, J.T., Pauls, T.A. & Rickard, L.J. .
NOI1999 AJ 118, 3032, 1999 .
NOI2018 not j Baines, E.K., Armstrong, J.T., Schmitt, H.R., Zavala, R.T., Benson, J.A., Hutter, 2018AJ....155...30B
NOI2018 D.J., Tycner, C. & van Belle, G.T.
NOI2018 AJ 155, 30, 2018
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
23393+7738 NHR 9 AB 2006 3 256 0.9 1.04 7.30 K1III NO K 233920.98+773755.1
23393+7738 NHR 9 AB 2020 8 215 1.8 1.04 7.30 K1III NO K 233920.98+773755.1

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

 
 
WDS 23393+7738 NHR 9 AB (Errai) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 23393+7738 NHR 9 AB (Errai) : MEASURES
 
 
No records found.

 
 
WDS 23393+7738 (Errai) : VIRTUAL EYEPIECE
 
 

23393+7738 NHR 9A mag 1.04 Sp K1III 23393+7738 NHR 9B sep 1.5 P.A. 188.40 mag 7.3 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 23393+7738 (Errai) : ALADIN DSS IMAGE @ 23h 39m 20.98s +77° 37' 55.1"
 
 
 
 
WDS 23393+7738 NHR 9 AB (Errai) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

23393+7738 NHR 9AB (Errai) distance=0' 23431+7740 LDS2051 distance=13' 23395+7752 HU 793 distance=14' 23312+7741 MLR 274 distance=27' 23308+7742 MLR 273 distance=28' 23299+7747 LDS2045 distance=31' 23307+7755 UC 4970 distance=33' 23513+7740 TDT4237 distance=39' 23408+7825 LOC 560 distance=48' 23568+7909 WNO 59BC distance=55' 23296+7825 MLR 299 distance=57' 23239+7704 STF3011 distance=62' 23397+7842 WSI 41 distance=64' 23567+7709 TDT4285 distance=64' 23402+7843 WFC 243 distance=66' 23551+7645 SKF2782 distance=75' 23580+7836 LDS2062 distance=83' 23547+7633 TDT4263 distance=83' 23534+7629 TDT4255 distance=84' 23548+7850 LOC 561 distance=87' 23564+7848 LOC 559 distance=88' 23275+7618 WFC 242 distance=90' 23508+7909 MLR 300 distance=98' 23438+7918 KPP1755 distance=102' 23194+7900 LDS2035AB distance=103' 23194+7900 MKR 1AC distance=103' 23194+7900 LAF 72AD distance=103' 23194+7900 LAF 72AE distance=103' 23546+7910 LDS2059 distance=103' 23568+7909 WNO 59AB distance=106' 23306+7933 LDS2046 distance=120' 23210+7926 LDS2036 distance=122' 23543+7933 LOC 563 distance=124' 23542+7933 NSN 775 distance=124' 23544+7933 LDS2058 distance=125' 23219+7547 LDS2037 distance=126' 23448+7947 LOC 565 distance=130' 23524+7533 BU 996AB distance=134' 23524+7533 BU 996AC distance=134' 23528+7950 LDS2056 distance=138' 23201+7945 SKF1256 distance=140' 23383+7959 MLR 276 distance=142' 23323+8004 LDS2047 distance=148' 23448+8006 LOC 566 distance=150' 23428+8031 HU 796 distance=174' 23425+8038 WIS 392 distance=181' 23592+7448 BU 1154 distance=184' 23380+7434 KPP 796 distance=184' 23209+7436 SKF2746 distance=194' 23411+7424 LDS2050 distance=194' 23367+7418 LDS2048 distance=201' 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 Errai 23393+7738 NHR 9 AB 215 1.8
Show 23431+7740 LDS2051 211 117.7 13
Show 23395+7752 HU 793 359 1.2 14
Show 23312+7741 MLR 274 159 2.5 27
Show 23308+7742 MLR 273 35 7.5 28
Show 23299+7747 LDS2045 174 6.6 31
Show 23307+7755 UC 4970 66 45.3 33
Show 23513+7740 TDT4237 284 0.8 39
Show 23408+7825 LOC 560 52 13.9 48
Show 23568+7909 WNO 59 BC 289 397.3 55
Show 23296+7825 MLR 299 35 0.2 57
Show 23239+7704 STF3011 331 7.0 62
Show 23397+7842 WSI 41 111 11.9 64
Show 23567+7709 TDT4285 236 0.7 64
Show 23402+7843 WFC 243 228 5.2 66
Show 23551+7645 SKF2782 129 8.2 75
Show 23580+7836 LDS2062 300 31.6 83
Show 23547+7633 TDT4263 330 2.2 83
Show 23534+7629 TDT4255 323 1.4 84
Show 23548+7850 LOC 561 291 3.4 87
Show 23564+7848 LOC 559 52 4.1 88
Show 23275+7618 WFC 242 13 3.9 90
Show 23508+7909 MLR 300 177 0.5 98
Show 23438+7918 KPP1755 239 13.6 102
Show 23194+7900 LDS2035 AB 214 10.9 103
Show 23194+7900 MKR 1 AC 142 962.8 103
Show 23194+7900 LAF 72 AD 359 6.1 103
Show 23194+7900 LAF 72 AE 50 15.2 103
Show 23546+7910 LDS2059 325 2.0 103
Show 23568+7909 WNO 59 AB 228 999.9 106
Show 23306+7933 LDS2046 319 17.6 120
Show 23210+7926 LDS2036 228 14.7 122
Show 23543+7933 LOC 563 268 1.9 124
Show 23542+7933 NSN 775 268 1.9 124
Show 23544+7933 LDS2058 61 5.0 125
Show 23219+7547 LDS2037 322 39.3 126
Show 23448+7947 LOC 565 330 3.5 130
Show 23524+7533 BU 996 AB 305 1.9 134
Show 23524+7533 BU 996 AC 142 146.4 134
Show 23528+7950 LDS2056 236 42.3 138
Show 23201+7945 SKF1256 189 6.0 140
Show 23383+7959 MLR 276 268 0.2 142
Show 23323+8004 LDS2047 284 10.8 148
Show 23448+8006 LOC 566 347 11.0 150
Show 23428+8031 HU 796 301 0.5 174
Show 23425+8038 WIS 392 96 597.1 181
Show 23592+7448 BU 1154 332 1.3 184
Show 23380+7434 KPP 796 220 6.8 184
Show 23209+7436 SKF2746 333 32.0 194
Show 23411+7424 LDS2050 147 21.9 194
Show 23367+7418 LDS2048 356 7.1 201

 
 
WDS 23393+7738 : COMPONENTS
 
 
  A
B pa=188.4°
sep=1.49"
 
 
23393+7738 A
 
 
Common name Errai Coord arcsec 2000 233920.98+773755.1 Mag 1.04 Spectral class K1III (yellow-orange)
PmRA -49.00 PmDE 127.0 SAO 10818 HIP 116727
Tycho2 4606-03584-1 HD 222404 HR 8974 GC 32875
BD BD+76 928 Bayer Gamma Cephei Bayer name Gam Cep Flamsteed 35 Cephei
Flamsteed name 35 Cep FK5 893
Tycho2
Tycho2 4606-03584-1 Pflag RAmdeg 354.83666500 DEmdeg 77.63231240
PmRA -67.9 PmDE 142.6 E RAmdeg 3 E DEmdeg 3
E pmRA 0.6 E pmDE 0.6 EpRAm 1991.22 EpDEm 1991.16
Num 19 Q RAmdeg 2.0 Q DEmdeg 1.7 Q pmRA 2.0
Q pmDE 1.5 BTmag 4.529 E BTmag 0.014 VTmag 3.322
E VTmag 0.009 Prox 999 TYC T HIP 116727
CCDM RAdeg 354.83739417 DEdeg 77.63197861 EpRA 1990 1.71
EpDE 1990 1.58 E RAdeg 3.2 E DEdeg 3.2 Posflg
Corr 0.1
SAO
SAO 10818 DelFlag RA1950 PmRA1950 -0.0198
DE1950 PmDE1950 0.156 Vmag 3.4 SpType K0
Double code Source 74 CatNum 893 DM BD+76 928
DMcomp BDsup HD 222404 M HD 0
GC 32875 RA1950rad 6.18403122 DE1950rad 1.35006903 PmRA2000 -0.0205
PmDE2000 0.149
Hipparcos
Catalog H HIP 116727 Proxy RAhms 23 39 20.98
DEdms +77 37 55.1 Vmag 3.21 VarFlag R Vmag G
RAdeg 354.837 DEdeg 77.632 AstroRef Plx 72.5
CCDM N CCDM Nsys Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 222404 BD BD+76 928
CD CP Dm number +76 928 VIred 0.99
SpType K1IV R SpType Coord arcsec 2000 233920.98+773755.1
Hipparcos 2
HIP 116727 Sn 1 So 1 Nc 1
RArad 6.1930813863 DErad 1.354933423 Plx 70.91 PmRA -47.96
PmDE 126.59 E RArad 0.36 E DErad 0.33 E Plx 0.4
E pmRA 0.45 E pmDE 0.4 Hpmag 3.3767 E Hpmag 0.0004
SHp 0.004 VA 0 BV 1.031 E BV 0.01
VI 0.99
 
 
23393+7738 B
 
 
Coord arcsec 2000 233920.91+773753.6 Mag 7.3 Calc delta mag 6.26 Calc coord yes