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Current system
18338+1744
WAK 21 CD


Nearby doubles
8' : 18341+1742
J 2915AB

14' : 18346+1739
BPM 791

15' : 18327+1741
TDT 934

18' : 18332+1730
J 98

21' : 18346+1801
SLE 206

21' : 18324+1737
GWP2782

27' : 18320+1735
KPP1183

27' : 18320+1754
SLE 621

31' : 18324+1720
SLE 622

32' : 18333+1713
SLE 193

33' : 18341+1712
SLE 202AB

36' : 18352+1812
CHR 74

39' : 18322+1713
SLE 189

40' : 18342+1705
SLE 203AB

43' : 18319+1710
BRT1302

44' : 18336+1700
SLE 197AB

46' : 18308+1803
BPMA 56

55' : 18359+1659
STT 358AB

55' : 18300+1734
TDT 914

57' : 18298+1747
BRT2447

58' : 18337+1646
SLE 198

58' : 18378+1752
BPM 794

59' : 18343+1841
MET 85AB

61' : 18299+1720
COU 118AB

64' : 18292+1742
J 2912AB

65' : 18381+1729
SLE 224



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Binary Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18338+1744 WAK 21 CD

 
 
18h 33m 45.62s +17° 43' 55.9" P.A. 263.00 sep 0.5 mag 9.30,9.56 Sp F6V
 
 
Coord 2000 18338+1744 Discov num WAK  21 Comp CD Coord arcsec 2000 18 33 45.62 +17 43 55.9
Date first 1975 Date last 2019 Obs 28
Pa first 249 Pa last 263.3 P.A. Now (θ) 263.3°
Sep first 0.2 Sep last 0.492 Sep. Now (ρ) 0.492"
Mag pri 9.30 Mag sec 9.56 delta mag (ΔM) 0.26 Spectral class F6V (yellow-white)
Pri motion ra +010 Sec motion ra +010
Pri motion dec -006 Sec motion dec -006
Notes N (See Notes)
Nature of this double is uncertain.
 
 
18338+1744 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 103853 18 33 46 +17 43 56 HU 322 AB 2019 53 92 0.2 7.74 8.91 1.17 Y
Show HD 171365 103853 18 33 46 +17 43 56 STF 2339 AB,CD 2018 115 277 1.7 7.45 8.67 1.22
Show 18 33 46 +17 43 56 WAK 21 CD 2019 28 263 0.5 9.30 9.56 0.26 <===
Quadruple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules Gaia DR2 4523973547779600384
 
 
WDS 18338+1744 WAK 21 CD : NOTES
 
 
discov_num notes refcode
HU 322 Distance less than 0.1" in 1960.
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 10.48 +/- 51.06, 3.98, 1.17 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 HU Hussey, W.F.
58 STF Struve, F.G.W.
91 WAK Walker, R.L.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18338+1744 WAK 21 CD 2007 14 260 0.5 9.30 9.56 183345.62+174355.9
18338+1744 WAK 21 CD 2009 16 261 0.5 9.30 9.56 183345.62+174355.9
18338+1744 WAK 21 CD 2010 19 261 0.5 9.30 9.56 N 183345.62+174355.9
18338+1744 WAK 21 CD 2011 20 262 0.4 9.30 9.56 N 183345.62+174355.9
18338+1744 WAK 21 CD 2017 21 263 0.5 9.30 9.56 F6V N 183345.62+174355.9
18338+1744 WAK 21 CD 2018 23 263 0.5 9.30 9.56 F6V N 183345.62+174355.9
18338+1744 WAK 21 CD 2019 24 263 0.5 9.30 9.56 F6V N 183345.62+174355.9

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

 
 
WDS 18338+1744 WAK 21 CD : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18338+1744 WAK 21 CD : MEASURES
 
 
No records found.

 
 
WDS 18338+1744 : VIRTUAL EYEPIECE
 
 

18338+1744 HU 322A mag 7.74 Sp F6V 18338+1744 HU 322B sep 0.2 P.A. 92.40 mag 8.91 18338+1744 WAK 21C mag 9.3 Sp F6V 18338+1744 WAK 21D sep 0.5 P.A. 263.00 mag 9.56 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 18338+1744 : ALADIN DSS IMAGE @ 18h 33m 45.62s +17° 43' 55.9"
 
 
 
 
WDS 18338+1744 WAK 21 CD : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18338+1744 WAK 21CD distance=0' 18341+1742 J 2915AB distance=8' 18341+1742 J 2915AC distance=8' 18346+1739 BPM 791 distance=14' 18327+1741 TDT 934 distance=15' 18332+1730 J 98 distance=18' 18346+1801 SLE 206 distance=21' 18324+1737 GWP2782 distance=21' 18320+1735 KPP1183 distance=27' 18320+1754 SLE 621 distance=27' 18324+1720 SLE 622 distance=31' 18333+1713 SLE 193 distance=32' 18341+1712 SLE 202BC distance=33' 18341+1712 SLE 202AB distance=33' 18341+1712 SLE 202AC distance=33' 18352+1812 CHR 74 distance=36' 18322+1713 SLE 189 distance=39' 18342+1705 SLE 203BC distance=40' 18342+1705 SLE 203AB distance=40' 18342+1705 SLE 203AC distance=40' 18319+1710 BRT1302 distance=43' 18336+1700 SLE 197AB distance=44' 18336+1700 SLE 197AD distance=44' 18336+1700 SLE 197AC distance=44' 18336+1700 SLE 197BC distance=44' 18308+1803 BPMA 56 distance=46' 18359+1659 STT 358AB distance=55' 18359+1659 RED 25AB,E distance=55' 18359+1659 SLE 214AB,D distance=55' 18359+1659 STT 358AB,C distance=55' 18359+1659 SLE 214CD distance=55' 18300+1734 TDT 914 distance=55' 18298+1747 BRT2447 distance=57' 18337+1646 SLE 198 distance=58' 18378+1752 BPM 794 distance=58' 18343+1841 MET 85AB distance=59' 18343+1841 MET 85AC distance=59' 18343+1841 MET 85AD distance=59' 18343+1841 MET 85AE distance=59' 18343+1841 MET 85AF distance=59' 18299+1720 COU 118AB distance=61' 18299+1720 COU 118AC distance=61' 18292+1742 J 2912AB distance=64' 18292+1742 SLE 619AC distance=64' 18381+1729 SLE 224 distance=65' 18288+1733 SLE 618 distance=73' 18380+1705 SLE 223 distance=73' 18387+1800 GRV 235 distance=73' 18372+1839 TDT 961 distance=74' 18309+1641 SLE 620AB distance=76' 18309+1641 SLE 620AC distance=76' 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 18338+1744 HU 322 AB 92 0.2
Show 18338+1744 STF2339 AB,CD 277 1.7
Show 18338+1744 WAK 21 CD 263 0.5
Show 18341+1742 J 2915 AB 190 6.1 8
Show 18341+1742 J 2915 AC 84 7.1 8
Show 18346+1739 BPM 791 203 58.8 14
Show 18327+1741 TDT 934 128 0.8 15
Show 18332+1730 J 98 147 3.9 18
Show 18346+1801 SLE 206 225 13.2 21
Show 18324+1737 GWP2782 115 47.5 21
Show 18320+1735 KPP1183 64 9.2 27
Show 18320+1754 SLE 621 53 12.4 27
Show 18324+1720 SLE 622 301 48.7 31
Show 18333+1713 SLE 193 291 9.6 32
Show 18341+1712 SLE 202 BC 71 17.0 33
Show 18341+1712 SLE 202 AB 70 51.7 33
Show 18341+1712 SLE 202 AC 70 68.7 33
Show 18352+1812 CHR 74 25 0.1 36
Show 18322+1713 SLE 189 111 12.8 39
Show 18342+1705 SLE 203 BC 333 14.3 40
Show 18342+1705 SLE 203 AB 267 56.0 40
Show 18342+1705 SLE 203 AC 279 63.2 40
Show 18319+1710 BRT1302 56 6.0 43
Show 18336+1700 SLE 197 AB 211 28.3 44
Show 18336+1700 SLE 197 AD 306 37.2 44
Show 18336+1700 SLE 197 AC 177 34.0 44
Show 18336+1700 SLE 197 BC 120 19.2 44
Show 18308+1803 BPMA 56 152 293.6 46
Show 18359+1659 STT 358 AB 146 1.7 55
Show 18359+1659 RED 25 AB,E 349 34.6 55
Show 18359+1659 SLE 214 AB,D 224 134.6 55
Show 18359+1659 STT 358 AB,C 235 198.7 55
Show 18359+1659 SLE 214 CD 77 72.0 55
Show 18300+1734 TDT 914 277 0.5 55
Show 18298+1747 BRT2447 359 2.8 57
Show 18337+1646 SLE 198 320 12.8 58
Show 18378+1752 BPM 794 108 96.4 58
Show 18343+1841 MET 85 AB 87 1.8 59
Show 18343+1841 MET 85 AC 35 2.7 59
Show 18343+1841 MET 85 AD 307 6.2 59
Show 18343+1841 MET 85 AE 114 6.9 59
Show 18343+1841 MET 85 AF 182 12.3 59
Show 18299+1720 COU 118 AB 204 6.6 61
Show 18299+1720 COU 118 AC 294 29.1 61
Show 18292+1742 J 2912 AB 142 6.3 64
Show 18292+1742 SLE 619 AC 102 35.7 64
Show 18381+1729 SLE 224 20 17.3 65
Show 18288+1733 SLE 618 94 19.2 73
Show 18380+1705 SLE 223 126 15.4 73
Show 18387+1800 GRV 235 331 7.8 73
Show 18372+1839 TDT 961 332 0.8 74

 
 
WDS 18338+1744 : COMPONENTS
 
 
  A B C
B pa=92.4°
sep=0.17"
 
C pa=0.0°
sep=0.00"
pa=272.4°
sep=0.17"
 
D pa=263.0°
sep=0.47"
pa=265.4°
sep=0.63"
pa=263.0°
sep=0.47"
 
 
18338+1744 A
 
 
Coord arcsec 2000 183345.62+174355.9 Mag 7.74 Spectral class F6V (yellow-white) PmRA 10.00
PmDE -6.0 SAO 103853 HIP 90996 Tycho2 1574-01293-1
HD 171365 GC 25360 BD BD+17 3627
Tycho2
Tycho2 1574-01293-1 Pflag P RAmdeg 278.44003390 DEmdeg 17.73219443
PmRA 10.1 PmDE -5.5 E RAmdeg 5 E DEmdeg 5
E pmRA 1.8 E pmDE 1.8 EpRAm 1991.64 EpDEm 1991.66
Num 3 Q RAmdeg 1.2 Q DEmdeg 2.2 Q pmRA 1.3
Q pmDE 2.2 BTmag 7.817 E BTmag 0.015 VTmag 7.446
E VTmag 0.011 Prox 18 TYC T HIP 90996
CCDM AB RAdeg 278.44008250 DEdeg 17.73220167 EpRA 1990 1.72
EpDE 1990 1.74 E RAdeg 4.5 E DEdeg 4.6 Posflg D
Corr 0.2
SAO
SAO 103853 DelFlag RA1950 PmRA1950 0.0002
DE1950 PmDE1950 -0.025 Vmag 7 SpType F5
Double code Source 70 CatNum 25360 DM BD+17 3627
DMcomp BDsup HD 171365 M HD 0
GC 25360 RA1950rad 4.85004318 DE1950rad 0.30879135 PmRA2000 0.0003
PmDE2000 -0.025
Hipparcos
Catalog H HIP 90996 Proxy H RAhms 18 33 45.62
DEdms +17 43 55.9 Vmag 7.08 VarFlag R Vmag H
RAdeg 278.44 DEdeg 17.7322 AstroRef * Plx 7.16
CCDM 18338+1744 N CCDM I Nsys 1 Ncomp 3
MultFlag C Source Qual C M HIP
Theta Rho HD 171365 BD BD+17 3627
CD CP Dm number +17 3627 VIred 0.49
SpType F6V R SpType Coord arcsec 2000 183345.62+174355.9
Hipparcos 2
HIP 90996 Sn 55 So 3 Nc 3
RArad 4.8596960034 DErad 0.3094852851 Plx 5.45 PmRA 0.14
PmDE -10.14 E RArad 4.67 E DErad 5.07 E Plx 8.8
E pmRA 6.04 E pmDE 6.78 Hpmag 7.1791 E Hpmag 0.001
SHp 0.009 VA 0 BV 0 E BV 0
VI 0
CCDM
Ccdm 18338+1744 RComp Comp A Note1
Note2 Discov num DRAs -2.39 DDEs -4.5
R dRAs 12 Year Theta Rho
Obs 3 Vmag 7.7 Sp F5 PmNote
PmRA -54 PmDE -18 Dm number +17 3627 Cat1 BD
Name2 +17 1861 Cat2 AGK2/3 HD 171365 M HD
ADS BDS A11454 M ADS BDS N IDS IDS 18294N1739A
HIC 90996
 
 
18338+1744 B
 
 
Coord arcsec 2000 183345.63+174355.9 Mag 8.91 Tycho2 1574-01293-2 Calc delta mag 1.17
Calc coord yes
Tycho2
Tycho2 1574-01293-2 Pflag P RAmdeg 278.44003390 DEmdeg 17.73219443
PmRA 10.1 PmDE -5.5 E RAmdeg 5 E DEmdeg 5
E pmRA 1.8 E pmDE 1.8 EpRAm 1991.64 EpDEm 1991.66
Num 3 Q RAmdeg 1.2 Q DEmdeg 2.2 Q pmRA 1.3
Q pmDE 2.2 BTmag 9.229 E BTmag 0.019 VTmag 8.667
E VTmag 0.015 Prox 18 TYC HIP 90996
CCDM C RAdeg 278.43955056 DEdeg 17.73224139 EpRA 1990 1.72
EpDE 1990 1.72 E RAdeg 8.4 E DEdeg 8.9 Posflg D
Corr 0.1
CCDM
Ccdm 18338+1744 RComp Comp B Note1
Note2 Discov num HU 322 DRAs DDEs
R dRAs Year 1959 Theta 059 Rho 0.1
Obs 15 Vmag 7.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11454 M ADS BDS N N IDS IDS 18294N1739B
HIC 90996
 
 
18338+1744 C
 
 
Coord arcsec 2000 183345.62+174355.9 Mag 9.3 Spectral class F6V (yellow-white) PmRA 10.00
PmDE -6.0 Calc delta mag 1.56
CCDM
Ccdm 18338+1744 RComp Comp C Note1
Note2 Discov num STF2339 DRAs DDEs
R dRAs Year 1830 Theta 272 Rho 2.3
Obs 99 Vmag 8.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11454 M ADS BDS N IDS IDS 18294N1739C
HIC 90996
 
 
18338+1744 D
 
 
Coord arcsec 2000 183345.59+174355.8 Mag 9.56 PmRA 10.00 PmDE -6.0
Calc delta mag 1.82 Calc coord yes