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Doubles in session


Current system
18444+2015
ALD 4 AD


Nearby doubles
18' : 18457+2033
HJ 2839AB

20' : 18444+2003
GRV 238

30' : 18443+2052
HU 325

37' : 18430+1955
TDS 936

48' : 18474+1957
TDT1056

52' : 18482+2028
TDT1060

59' : 18432+1928
BU 645

61' : 18425+2116
BRT2448

65' : 18487+2053
RAS 27

67' : 18399+2019
L 64

68' : 18412+2111
TDT 994

71' : 18445+1913
J 466

74' : 18473+2125
GRV 239

75' : 18405+1936
OSO 102AB

78' : 18496+1953
MMA 28

78' : 18490+2110
STF2401AB

79' : 18500+2043
HU 328

81' : 18389+2019
L 63

82' : 18393+2056
STF2360

85' : 18501+1952
TDT1079

86' : 18505+2002
KU 121

88' : 18489+1920
DCH 121

92' : 18508+1954
KPP 426

95' : 18408+2142
HU 324

95' : 18369+2019
L 62

95' : 18498+2124
HU 327



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

18444+2015 ALD 4 AD

 
 
18h 44m 35.48s +20° 23' 00.7" P.A. 332.00 sep 3.9 mag 11.70, Sp F2
 
 
Coord 2000 18444+2015 Discov num ALD   4 Comp AD Coord arcsec 2000 18 44 35.48 +20 23 00.7
Date first 1997 Date last 2016 Obs 3
Pa first 339 Pa last 331.7 P.A. Now (θ) 331.7°
Sep first 4.0 Sep last 3.895 Sep. Now (ρ) 3.895"
Mag pri 11.70 Mag sec delta mag (ΔM) Spectral class F2 (yellow-white)
Pri motion ra +000 Sec motion ra
Pri motion dec -012 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18444+2015 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 44 35 +20 23 01 ALD 4 Aa,Ab 2016 2 225 0.7 11.70 12.40 0.70
Show 18 44 35 +20 23 01 ALD 4 AB 2016 7 342 4.2 11.70 12.20 0.50
Show 18 44 35 +20 23 01 DAM 640 AC 2016 5 168 11.0 11.70 13.40 1.70
Show 18 44 35 +20 23 01 ALD 4 AD 2016 3 332 3.9 11.70 <===
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules
 
 
WDS 18444+2015 ALD 4 AD : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
ALD Alden, H.L.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
18444+2015 ALD 4 AD 2016 3 332 3.9 11.70   F2 184435.48+202300.7

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

 
 
WDS 18444+2015 ALD 4 AD : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18444+2015 ALD 4 AD : MEASURES
 
 
No records found.

 
 
WDS 18444+2015 : VIRTUAL EYEPIECE
 
 

18444+2015 ALD 4A mag 11.7 Sp F2 18444+2015 ALD 4Ab sep 0.7 P.A. 225.10 mag 12.4 18444+2015 ALD 4B sep 4.2 P.A. 342.10 mag 12.2 18444+2015 DAM 640C sep 10.9 P.A. 168.20 mag 13.4 18444+2015 ALD 4D sep 3.9 P.A. 331.70 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18444+2015 : ALADIN DSS IMAGE @ 18h 44m 35.48s +20° 23' 00.7"
 
 
 
 
WDS 18444+2015 ALD 4 AD : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18444+2015 ALD 4AD distance=0' 18457+2033 HJ 2839AB distance=18' 18457+2033 HJ 2839AC distance=18' 18457+2033 HJ 2839AD distance=18' 18457+2033 HJ 2839AE distance=18' 18444+2003 GRV 238 distance=20' 18443+2052 HU 325 distance=30' 18430+1955 TDS 936 distance=37' 18474+1957 TDT1056 distance=48' 18482+2028 TDT1060 distance=52' 18432+1928 BU 645 distance=59' 18425+2116 BRT2448 distance=61' 18487+2053 RAS 27 distance=65' 18399+2019 L 64 distance=67' 18412+2111 TDT 994 distance=68' 18445+1913 J 466 distance=71' 18473+2125 GRV 239 distance=74' 18405+1936 OSO 102AB distance=75' 18405+1936 OSO 102AC distance=75' 18496+1953 MMA 28 distance=78' 18490+2110 STF2401AB distance=78' 18490+2110 STF2401AC distance=78' 18500+2043 HU 328 distance=79' 18389+2019 L 63 distance=81' 18393+2056 STF2360 distance=82' 18501+1952 TDT1079 distance=85' 18505+2002 KU 121 distance=86' 18489+1920 DCH 121 distance=88' 18508+1954 KPP 426 distance=92' 18408+2142 HU 324 distance=95' 18369+2019 L 62 distance=95' 18498+2124 HU 327 distance=95' 18509+2058 COU 317AB distance=96' 18509+2058 COU 317AC distance=96' 18433+1847 COU 816 distance=98' 18517+2041 J 809 distance=101' 18423+1842 TDT1012 distance=107' 18426+2209 COU 208 distance=109' 18515+2117 TDT1091 distance=112' 18498+2149 BRT2449 distance=113' 18525+2007 TDT1101 distance=113' 18472+2213 JNN 119 distance=116' 18528+2043 TDT1105 distance=118' 18443+2224 HU 1657 distance=121' 18361+2003 TDS 931 distance=122' 18368+2120 HU 323 distance=124' 18440+1820 BPM 811 distance=124' 18420+2221 TDT1008 distance=124' 18527+2112 TDT1103 distance=124' 18523+2126 ISO 8 distance=125' 18369+2021 L 61 distance=125' 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 18444+2015 ALD 4 AB 342 4.2 0
Show 18444+2015 DAM 640 AC 168 11.0 0
Show 18444+2015 ALD 4 Aa,Ab 225 0.7 0
Show 18444+2015 ALD 4 AD 332 3.9 0
Show 18457+2033 HJ 2839 AB 57 74.8 18
Show 18457+2033 HJ 2839 AC 59 73.0 18
Show 18457+2033 HJ 2839 AD 336 25.4 18
Show 18457+2033 HJ 2839 AE 13 61.1 18
Show 18444+2003 GRV 238 345 36.6 20
Show 18443+2052 HU 325 8 0.3 30
Show 18430+1955 TDS 936 157 2.0 37
Show 18474+1957 TDT1056 171 4.6 48
Show 18482+2028 TDT1060 175 0.6 52
Show 18432+1928 BU 645 305 9.3 59
Show 18425+2116 BRT2448 294 3.8 61
Show 18487+2053 RAS 27 218 1.2 65
Show 18399+2019 L 64 74 4.1 67
Show 18412+2111 TDT 994 27 0.7 68
Show 18445+1913 J 466 214 2.9 71
Show 18473+2125 GRV 239 244 7.6 74
Show 18405+1936 OSO 102 AB 99 17.3 75
Show 18405+1936 OSO 102 AC 36 20.3 75
Show 18496+1953 MMA 28 70 13.9 78
Show 18490+2110 STF2401 AB 38 4.2 78
Show 18490+2110 STF2401 AC 149 92.9 78
Show 18500+2043 HU 328 187 4.8 79
Show 18389+2019 L 63 63 2.7 81
Show 18393+2056 STF2360 359 2.4 82
Show 18501+1952 TDT1079 295 1.3 85
Show 18505+2002 KU 121 312 31.5 86
Show 18489+1920 DCH 121 10 0.4 88
Show 18508+1954 KPP 426 97 4.6 92
Show 18408+2142 HU 324 113 0.9 95
Show 18369+2019 L 62 314 6.2 95
Show 18498+2124 HU 327 60 0.3 95
Show 18509+2058 COU 317 AB 94 1.5 96
Show 18509+2058 COU 317 AC 2 17.3 96
Show 18433+1847 COU 816 286 0.2 98
Show 18517+2041 J 809 211 1.6 101
Show 18423+1842 TDT1012 33 0.5 107
Show 18426+2209 COU 208 306 0.3 109
Show 18515+2117 TDT1091 297 0.7 112
Show 18498+2149 BRT2449 229 4.0 113
Show 18525+2007 TDT1101 117 0.6 113
Show 18472+2213 JNN 119 270 0.4 116
Show 18528+2043 TDT1105 12 0.6 118
Show 18443+2224 HU 1657 244 0.3 121
Show 18361+2003 TDS 931 49 1.2 122
Show 18368+2120 HU 323 144 0.2 124
Show 18440+1820 BPM 811 86 55.0 124
Show 18420+2221 TDT1008 41 2.4 124

 
 
WDS 18444+2015 : COMPONENTS
 
 
  A Ab B C
Ab pa=225.1°
sep=0.75"
 
B pa=342.1°
sep=4.19"
pa=350.4°
sep=4.57"
 
C pa=168.2°
sep=10.95"
pa=164.8°
sep=10.56"
pa=166.5°
sep=15.12"
 
D pa=331.7°
sep=3.89"
pa=341.6°
sep=4.17"
pa=225.2°
sep=0.79"
pa=343.9°
sep=14.73"
 
 
18444+2015 A
 
 
Coord arcsec 2000 184435.48+202300.7 Mag 11.7 Spectral class F2 (yellow-white) PmRA 0.00
PmDE -12.0
CCDM
Ccdm 18444+2015 RComp Comp A Note1
Note2 Discov num DRAs -1.51 DDEs -13.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 10.9 Sp F2 PmNote *
PmRA -14 PmDE 1 Dm number +20 3920 Cat1 BD
Name2 +20 1954 Cat2 AGK2/3 HD M HD
ADS BDS A11627 M ADS BDS N IDS IDS 18399N2010A
HIC
 
 
18444+2015 Ab
 
 
Coord arcsec 2000 184435.44+202300.2 Mag 12.4 Delta magnitude 0.7 Coordinate calculated yes
 
 
18444+2015 B
 
 
Coord arcsec 2000 184435.39+202304.7 Mag 12.2 PmRA -23.00 PmDE 3.0
Delta magnitude 0.5 Coordinate calculated yes
CCDM
Ccdm 18444+2015 RComp Comp B Note1
Note2 Discov num ALD 4 DRAs DDEs
R dRAs Year 1916 Theta 339 Rho 3.9
Obs 1 Vmag 11.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11627 M ADS BDS N IDS IDS 18399N2010B
HIC
 
 
18444+2015 C
 
 
Coord arcsec 2000 184435.64+202250.0 Mag 13.4 PmRA 13.00 PmDE 5.0
Delta magnitude 1.7 Coordinate calculated yes
 
 
18444+2015 D
 
 
Coord arcsec 2000 184435.35+202304.1 Delta magnitude 11.7 Coordinate calculated yes