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Doubles in session


Current system
18339+5221
A 1377 AB


Nearby doubles
19' : 18344+5240
BEM 34

35' : 18345+5147
HDS2634

36' : 18323+5149
SLE 205

39' : 18339+5144
ZUC 16

44' : 18314+5144
SLE 194AB

45' : 18389+5221
STF2368AB

49' : 18387+5243
A 1379

59' : 18387+5300
SLE 232

65' : 18298+5314
TDT 911

67' : 18372+5122
SLE 227

74' : 18319+5110
ES 784

76' : 18414+5150
SLE 239

83' : 18340+5058
ES 785AB

94' : 18399+5106
ES 787

97' : 18340+5045
ES 786

101' : 18383+5353
A 1378AB

102' : 18448+5201
HU 755

104' : 18238+5139
ES 187AB

104' : 18417+5108
HU 754

106' : 18259+5338
FMR 140

109' : 18238+5318
YSC 66

109' : 18221+5222
ES 648

110' : 18459+5228
RAO 398

110' : 18402+5048
COU2515

112' : 18244+5331
BEM 33

112' : 18461+5212
MLR 637



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.
 
 
WDS 18339+5221 A 1377 AB : NOTES
 
 
discov_num notes refcode
A 1377 Mt. Wilson spectral classes A is G5, C is B8n.
AB. This appears to be part of a triple system. The elements given by
Wilson (1950) and by Baize (1958) are different, possibly due to the WRH1950b
long period of the system. This 1975.533 separation is less than that Baz1958
derived from either ephemeris but it and the position angle are closer
to Baize's values. BLM1978
2003.6: Differential astrometry by Lane & Muterspaugh (2004) was Lne2004
originally published as follows, but converted to BY, rho, and theta
by WIH for inclusion in our catalogs:
MJD dRA (arcsec) dDEC (arcsec)
52862.30085 0.222109 +/- 0.000143 -0.119309 +/- 0.00000839
52863.28229 0.222233 +/- 0.000143 -0.119302 +/- 0.0000155
52864.31096 0.222134 +/- 0.000197 -0.119323 +/- 0.0000189
52865.29921 0.221981 +/- 0.000155 -0.119361 +/- 0.0000148
AB: Additional notes may be found in Wilson (1955). WRH1955
 
 
REFERENCES
 
 
refcode metd author reference
Baz1958 orb - Baize, P. 1958JO.....41..163B
Baz1958 J. Obs. 41, 163-183, 1958
BLM1978 S j Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. 1978MNRAS.183..701M
BLM1978 MNRAS 183, 701, 1978
Lne2004 Kp j Lane, B.F. & Muterspaugh, M.W. 2004ApJ...601.1129L
Lne2004 ApJ 601, 1129, 2004
Mut2010e Kp - Muterspaugh, M.W., Lane, B.F., Kulkarni, S.R., Konacki, M., Burke, B.F., 2010AJ....140.1657M
Mut2010e +orb Colavita, M.M., Shao, M., Hartkopf, W., Boss, A.P., & Williamson, M.
Mut2010e AJ 140, 1657, 2010
WRH1950b Ma - Wilson, R.H. 1950AJ.....55..159W
WRH1950b +J AJ 55, 159, 1950
WRH1950b +orb
WRH1955 J j Wilson, R.H. 1955AJ.....60..446W
WRH1955 +Ma AJ 60, 446, 1955
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
312 SLE Soulie, G.
331 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
18339+5221 A 1377 AB 2004 142 120 0.2 6.20 6.40 G9III NOD 183356.69+522112.6
18339+5221 A 1377 AB 2006 143 121 0.3 6.20 6.40 G9III NOD 183356.69+522112.6
18339+5221 A 1377 AB 2007 144 121 0.2 6.20 6.40 G9III NOD 183356.69+522112.6
18339+5221 A 1377 AB 2008 145 123 0.2 6.20 6.40 G9III NOD 183356.69+522112.6
18339+5221 A 1377 AB 2009 200 125 0.2 6.20 6.40 G9III NOD 183356.69+522112.6
18339+5221 A 1377 AB 2011 205 127 0.2 6.20 6.40 G9III NO 183356.69+522112.6
18339+5221 A 1377 AB 2013 199 131 0.2 6.20 6.40 G9III NO 183356.69+522112.6
18339+5221 A 1377 AB 2014 200 131 0.2 6.20 6.40 G9III NO 183356.69+522112.6
18339+5221 A 1377 AB 2016 202 134 0.2 6.20 6.40 G9III NO 183356.69+522112.6

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