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Doubles in session


Current system
18426+5532
ISO 7 Aa,Ab


Nearby doubles
29' : 18440+5558
STI2384

33' : 18421+5501
KPP1134

39' : 18471+5523
SIG 5

41' : 18390+5559
A 1380AB

52' : 18443+5443
UC 3659

54' : 18471+5455
TOI1746

65' : 18499+5516
MLR 574

65' : 18351+5521
STI2379

65' : 18486+5613
TDT1062

65' : 18433+5637
STI2383

66' : 18463+5630
DAL 31

77' : 18458+5645
MLB 137

83' : 18438+5654
BU 465

98' : 18319+5459
TDT 929

100' : 18542+5535
STI2395

100' : 18337+5638
TDS 929

105' : 18471+5356
A 1382

107' : 18383+5353
A 1378AB

113' : 18318+5639
ES 975

115' : 18426+5727
STI2382

116' : 18563+5537
MLB 138AB

117' : 18380+5722
STI2380

118' : 18481+5721
STI2389

122' : 18459+5731
STI2386

123' : 18510+5713
STI2393

125' : 18541+5417
ES 976



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

18426+5532 ISO 7 Aa,Ab

 
 
18h 42m 37.96s +55° 32' 21.8" P.A. 135.00 sep 0.2 mag 5.04, Sp B9.5pHg: dist. 104.38 pc (340.49 l.y.)
 
 
Coord 2000 18426+5532 Discov num ISO   7 Comp Aa,Ab Coord arcsec 2000 18 42 37.96 +55 32 21.8
Date first 1987 Date last 1987 Obs 1
Pa first 135 Pa last 135 P.A. Now (θ) 135°
Sep first 0.2 Sep last 0.2 Sep. Now (ρ) 0.2"
Mag pri 5.04 Mag sec delta mag (ΔM) Spectral class B9.5pHg: (blue-white)
Pri motion ra -002 Sec motion ra
Pri motion dec +024 Sec motion dec
Notes N X (See Notes, Dubious double)
Nature of this double is uncertain.
 
 
18426+5532 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 31119 18 42 38 +55 32 22 ISO 7 Aa,Ab 1987 1 135 0.2 5.04 <===
Show 46 Dra 31119 18 42 38 +55 32 22 H 6 37 AB 2015 7 158 147.0 5.01 11.04 6.03
Show 31119 18 42 38 +55 32 22 H 6 37 AC 2015 14 340 331.2 5.01 8.24 3.23
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV11273 Dra Constellation Draco SAO 31119 HIP 91755
Tycho2 3922-02095-1 Gaia DR2 2147865732587997056 HD 173524 HR 7049
GC 25635 BD BD+55 2107 Flamsteed 46 Draconis Flamsteed name 46 Dra
FK5 3491 Distance 104.38 Distance ly 340.49
 
 
WDS 18426+5532 ISO 7 Aa,Ab : NOTES
 
 
discov_num notes refcode
ISO 7 46 Dra. A spectroscopic binary, P 9.87d. Abundance peculiarities.
H 6 37 H VI 37.
 
 
REFERENCES
 
 
refcode metd author reference
Iso1990a S j Isobe, S., Norimoto, Y., Noguchi, M., Ohtsubo, J., Baba, N., Miura, N., 1990PNAOJ...1..217I
Iso1990a Yanaka, H., & Tanaka, T.
Iso1990a Pub. Natl. Astron. Obs. Japan 1, 217, 1990
Iso1990b S j Isobe, S., Norimoto, Y., Noguchi, M., Ohtsubo, J., Baba, N., Miura, N., 1990PNAOJ...1..381I
Iso1990b Yanaka, H., & Tanaka, T.
Iso1990b Pub. Natl. Astron. Obs. Japan 1, 381, 1990
Iso1991 S j Isobe, S. 1991PASAu...9..270I
Iso1991 Proc. Astron. Soc. Australia, 9, 270, 1991
Iso1992 S j Isobe, S., Noguchi, M., Ohtsubo, J., Baba, N., Miura, N., Tanaka, T., & Ni-ino, M. 1992PNAOJ...2..459I
Iso1992 Pub. Natl. Astron. Obs. Japan 2, 459, 1992
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18426+5532 ISO 7 Aa,Ab 1987 1 135 0.2 5.04   B9.5pHg: N 184237.96+553221.8

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

 
 
WDS 18426+5532 ISO 7 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18426+5532 ISO 7 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18426+5532 : VIRTUAL EYEPIECE
 
 

18426+5532 H 6 37A mag 5.01 Sp B9.5pHg: 18426+5532 ISO 7Ab sep 0.2 P.A. 150.50 18426+5532 H 6 37B sep 139.8 P.A. 167.10 mag 11.04 18426+5532 H 6 37C sep 318.1 P.A. 348.50 mag 8.24 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 18426+5532 : ALADIN DSS IMAGE @ 18h 42m 37.96s +55° 32' 21.8"
 
 
 
 
WDS 18426+5532 ISO 7 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18426+5532 ISO 7Aa,Ab distance=0' 18440+5558 STI2384 distance=29' 18421+5501 KPP1134 distance=33' 18471+5523 SIG 5 distance=39' 18390+5559 A 1380AB distance=41' 18390+5559 A 1380AB,C distance=41' 18443+5443 UC 3659 distance=52' 18471+5455 TOI1746 distance=54' 18499+5516 MLR 574 distance=65' 18351+5521 STI2379 distance=65' 18486+5613 TDT1062 distance=65' 18433+5637 STI2383 distance=65' 18463+5630 DAL 31 distance=66' 18458+5645 MLB 137 distance=77' 18438+5654 BU 465 distance=83' 18319+5459 TDT 929 distance=98' 18542+5535 STI2395 distance=100' 18337+5638 TDS 929 distance=100' 18471+5356 A 1382 distance=105' 18383+5353 A 1378AB distance=107' 18383+5353 A 1378AB,C distance=107' 18318+5639 ES 975 distance=113' 18426+5727 STI2382 distance=115' 18563+5537 MLB 138AB distance=116' 18380+5722 STI2380 distance=117' 18481+5721 STI2389 distance=118' 18459+5731 STI2386 distance=122' 18510+5713 STI2393 distance=123' 18541+5417 ES 976 distance=125' 18563+5432 HDS2682Aa,Ab distance=132' 18563+5432 GIC 154AB distance=132' 18278+5622 MLB 136 distance=135' 18560+5414 TDT1133 distance=140' 18569+5645 STF2433AB distance=140' 18569+5645 STF2433AC distance=140' 18598+5543 ES 1748 distance=146' 18268+5633 STI2375 distance=146' 18483+5752 STI2390AC distance=147' 18483+5752 GAT 3AB distance=147' 18483+5752 STI2390BC distance=147' 18254+5539 LDS4786 distance=147' 18449+5759 STI2385 distance=148' 18557+5714 TDT1129 distance=149' 18593+5450 A 1387AB distance=150' 18593+5450 MLR 575AB,C distance=150' 18563+5713 STI2400 distance=152' 18249+5517 CRB 204 distance=153' 18596+5635 STI2403 distance=156' 18387+5300 SLE 232 distance=157' 18525+5319 KPP4125 distance=159' 18569+5723 ES 1747 distance=163' 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 18426+5532 ISO 7 Aa,Ab 135 0.2
Show 18426+5532 H 6 37 AB 158 147.0
Show 18426+5532 H 6 37 AC 340 331.2
Show 18440+5558 STI2384 142 3.8 29
Show 18421+5501 KPP1134 336 8.9 33
Show 18471+5523 SIG 5 126 0.2 39
Show 18390+5559 A 1380 AB 20 1.0 41
Show 18390+5559 A 1380 AB,C 332 11.8 41
Show 18443+5443 UC 3659 178 8.1 52
Show 18471+5455 TOI1746 351 0.9 54
Show 18499+5516 MLR 574 55 1.1 65
Show 18351+5521 STI2379 358 14.4 65
Show 18486+5613 TDT1062 305 0.8 65
Show 18433+5637 STI2383 342 14.5 65
Show 18463+5630 DAL 31 265 49.3 66
Show 18458+5645 MLB 137 165 2.0 77
Show 18438+5654 BU 465 289 2.7 83
Show 18319+5459 TDT 929 152 2.3 98
Show 18542+5535 STI2395 164 12.1 100
Show 18337+5638 TDS 929 78 1.2 100
Show 18471+5356 A 1382 226 4.6 105
Show 18383+5353 A 1378 AB 119 0.4 107
Show 18383+5353 A 1378 AB,C 273 14.1 107
Show 18318+5639 ES 975 51 10.5 113
Show 18426+5727 STI2382 138 12.4 115
Show 18563+5537 MLB 138 AB 63 4.9 116
Show 18380+5722 STI2380 4 10.3 117
Show 18481+5721 STI2389 226 13.9 118
Show 18459+5731 STI2386 9 17.3 122
Show 18510+5713 STI2393 205 11.5 123
Show 18541+5417 ES 976 278 5.0 125
Show 18563+5432 HDS2682 Aa,Ab 327 0.4 132
Show 18563+5432 GIC 154 AB 170 118.8 132
Show 18278+5622 MLB 136 243 2.1 135
Show 18560+5414 TDT1133 262 0.9 140
Show 18569+5645 STF2433 AB 122 7.4 140
Show 18569+5645 STF2433 AC 140 39.5 140
Show 18598+5543 ES 1748 54 6.6 146
Show 18268+5633 STI2375 176 4.5 146
Show 18483+5752 STI2390 AC 100 5.1 147
Show 18483+5752 GAT 3 AB 117 2.3 147
Show 18483+5752 STI2390 BC 85 2.9 147
Show 18254+5539 LDS4786 73 6.0 147
Show 18449+5759 STI2385 143 12.4 148
Show 18557+5714 TDT1129 14 0.5 149
Show 18593+5450 A 1387 AB 351 0.3 150
Show 18593+5450 MLR 575 AB,C 227 21.8 150
Show 18563+5713 STI2400 138 13.1 152
Show 18249+5517 CRB 204 103 12.1 153
Show 18596+5635 STI2403 92 6.4 156
Show 18387+5300 SLE 232 219 14.6 157

 
 
WDS 18426+5532 : COMPONENTS
 
 
  A Ab B
Ab pa=150.5°
sep=0.16"
 
B pa=167.1°
sep=139.82"
pa=167.1°
sep=139.66"
 
C pa=348.5°
sep=318.15"
pa=348.5°
sep=318.31"
pa=348.1°
sep=457.94"
 
 
18426+5532 A
 
 
Name 46 Dra Coord arcsec 2000 184237.96+553221.8 Mag 5.01 Spectral class B9.5pHg: (blue-white)
PmRA -3.00 PmDE 23.0 SAO 31119 HIP 91755
Tycho2 3922-02095-1 HD 173524 HR 7049 GC 25635
BD BD+55 2107 Flamsteed 46 Draconis Flamsteed name 46 Dra FK5 3491
Tycho2
Tycho2 3922-02095-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 4.925 E BTmag 0.014 VTmag 5.013
E VTmag 0.009 Prox 999 TYC T HIP 91755
CCDM RAdeg 280.65814972 DEdeg 55.53940306 EpRA 1990 1.53
EpDE 1990 1.61 E RAdeg 3.4 E DEdeg 3.4 Posflg
Corr 0.1
SAO
SAO 31119 DelFlag RA1950 PmRA1950 -0.0009
DE1950 PmDE1950 0.024 Vmag 5.1 SpType A0
Double code Source 70 CatNum 25635 DM BD+55 2107
DMcomp BDsup HD 173524 M HD 0
GC 25635 RA1950rad 4.89417803 DE1950rad 0.9684523 PmRA2000 -0.0003
PmDE2000 0.024
Hipparcos
Catalog H HIP 91755 Proxy RAhms 18 42 37.96
DEdms +55 32 21.8 Vmag 5.03 VarFlag R Vmag H
RAdeg 280.658 DEdeg 55.5394 AstroRef Plx 8.96
CCDM 18426+5534 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 173524 BD BD+55 2107
CD CP Dm number +55 2107 VIred -0.06
SpType B9.5p... R SpType Coord arcsec 2000 184237.96+553221.8
Hipparcos 2
HIP 91755 Sn 5 So 0 Nc 1
RArad 4.8984088048 DErad 0.9693454041 Plx 9.58 PmRA -3.01
PmDE 23.02 E RArad 0.16 E DErad 0.14 E Plx 0.16
E pmRA 0.21 E pmDE 0.2 Hpmag 5.0108 E Hpmag 0.0005
SHp 0.004 VA 0 BV -0.07 E BV 0.003
VI -0.05
 
 
18426+5532 Ab
 
 
Coord arcsec 2000 184237.97+553221.7 Calc delta mag 5.04 Calc coord yes
 
 
18426+5532 B
 
 
Coord arcsec 2000 184241.63+553005.5 Mag 11.04 PmRA 19.00 PmDE 34.0
Calc delta mag 6 Calc coord yes
 
 
18426+5532 C
 
 
Coord arcsec 2000 184230.52+553733.6 Mag 8.24 PmRA 11.00 PmDE 13.0
SAO 31117 HIP 91735 Tycho2 3922-00929-1 HD 238925
BD BD+55 2106 Calc delta mag 3.2 Calc coord yes
Tycho2
Tycho2 3922-00929-1 Pflag RAmdeg 280.60336770 DEmdeg 55.62614549
PmRA 13.0 PmDE 10.4 E RAmdeg 8 E DEmdeg 8
E pmRA 1.1 E pmDE 1.2 EpRAm 1990.43 EpDEm 1990.63
Num 14 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.4
Q pmDE 1.0 BTmag 9.422 E BTmag 0.021 VTmag 8.240
E VTmag 0.014 Prox 999 TYC T HIP 91735
CCDM RAdeg 280.60331389 DEdeg 55.62612083 EpRA 1990 1.58
EpDE 1990 1.56 E RAdeg 7.8 E DEdeg 8.1 Posflg
Corr 0.0
SAO
SAO 31117 DelFlag RA1950 PmRA1950 0.0019
DE1950 PmDE1950 0.024 Vmag 7.5 SpType K0
Double code Source 38 CatNum 9931 DM BD+55 2106
DMcomp BDsup HD 238925 M HD 0
GC RA1950rad 4.89324102 DE1950rad 0.96997222 PmRA2000 0.0026
PmDE2000 0.024
Hipparcos
Catalog H HIP 91735 Proxy RAhms 18 42 24.80
DEdms +55 37 34.0 Vmag 8.13 VarFlag R Vmag H
RAdeg 280.603 DEdeg 55.6261 AstroRef Plx 5.52
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 238925 BD BD+55 2106
CD CP Dm number +55 2106 VIred 0.98
SpType K0 R SpType Coord arcsec 2000 184224.80+553734.0
Hipparcos 2
HIP 91735 Sn 5 So 0 Nc 1
RArad 4.8974518109 DErad 0.9708589104 Plx 6.46 PmRA 12.79
PmDE 13.58 E RArad 0.57 E DErad 0.56 E Plx 0.6
E pmRA 0.82 E pmDE 0.82 Hpmag 8.2993 E Hpmag 0.0016
SHp 0.015 VA 0 BV 1.029 E BV 0.036
VI 1