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Current system
18221+4821
HU 582
HD 169431


Nearby doubles
40' : 18253+4846
HU 66AB

40' : 18192+4754
UC 3553

47' : 18268+4822
COU2277

58' : 18179+4743
TDT 780

60' : 18273+4852
TDT 880

63' : 18169+4856
LDS5174AB

65' : 18193+4724
ES 1158

70' : 18263+4917
TDT 868

72' : 18272+4913
RAO 392

73' : 18294+4813
TDT 905

76' : 18146+4827
SHN 228

80' : 18296+4851
ES 2667AB

80' : 18161+4729
COU2120

83' : 18276+4926
COU2278

88' : 18308+4810
KPP 415

89' : 18145+4737
COU2119

91' : 18197+4654
TDS 916

92' : 18283+4930
TDT 896

94' : 18253+4653
BU 134

96' : 18291+4928
UC 3589

103' : 18264+4649
STT 352

105' : 18322+4755
KPP2097

108' : 18117+4758
COU2116

112' : 18334+4823
TDS 928

115' : 18119+4733
COU2117

120' : 18133+4944
HDS2572



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.

18221+4821 HU 582 (HD 169431)

 
 
18h 22m 08.96s +48° 21' 27.1" P.A. 191.00 sep 2.3 mag 8.46,11.18 Sp G5 dist. 238.1 pc (776.68 l.y.)
 
 
Coord 2000 18221+4821 Discov num HU  582 Comp Coord arcsec 2000 18 22 08.96 +48 21 27.1
Date first 1902 Date last 2016 Obs 9
Pa first 195 Pa last 191 P.A. Now (θ) 191°
Sep first 2.2 Sep last 2.267 Sep. Now (ρ) 2.267"
Mag pri 8.46 Mag sec 11.18 delta mag (ΔM) 2.72 Spectral class G5 (yellow)
Pri motion ra -011 Sec motion ra -009
Pri motion dec +022 Sec motion dec +016
Notes
rPM=0.257 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 169431 Constellation Draco SAO 47429 HIP 90025
Tycho2 3529-01396-1 Gaia DR2 2122008547701094912 HD 169431 ADS 11301
BD BD+48 2683 Distance 238.1 Distance ly 776.68
 
 
WDS 18221+4821 HU 582 (HD 169431) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Hu_1896 not - Hussey, W.F. 1896PASP....8..183H
Hu_1896 PASP 8, 183, 1896
Hu_1897 Ma - Hussey, W.J. 1897AJ.....17...97H
Hu_1897 AJ 17, 97, 1897
Hu_1898 Ma j Hussey, W.J. 1898AJ.....18..145H
Hu_1898 AJ 18, 145, 1898
Hu_1899 Ma j Hussey, W.J. 1899AN....150..175H
Hu_1899 AN 150, 175, 1899
Hu_1900a Ma - Hussey, W.J. 1900AJ.....20..192H
Hu_1900a AJ 20, 192, 1900
Hu_1900b Ma - Hussey, W.J. 1900AJ.....21...35H
Hu_1900b AJ 21, 35, 1900
Hu_1900c Ma j Hussey, W.J. 1900AN....152..329H
Hu_1900c AN 152, 329, #3645, 1900
Hu_1901a Ma j Hussey, W.J. 1901PLicO...5.....H
Hu_1901a +orb Pub. Lick Obs. 5, 1901
Hu_1901b Ma j Hussey, W.J. 1901LicOB...1...82H
Hu_1901b Lick Obs. Bull. 1, 82, 1901
Hu_1902a Ma j Hussey, W.J. 1902LicOB...1..161H
Hu_1902a Lick Obs. Bull. 1, 161, 1902
Hu_1902b Ma j Hussey, W.J. 1902LicOB...2....1H
Hu_1902b Lick Obs. Bull. 2, 1, 1902
Hu_1903a Ma j Hussey, W.J. 1903LicOB...2...73H
Hu_1903a Lick Obs. Bull. 2, 73, 1903
Hu_1903b Ma j Hussey, W.J. 1903LicOB...2..115H
Hu_1903b Lick Obs. Bull. 2, 115, 1903
Hu_1904a Ma j Hussey, W.J. 1904LicOB...2..180H
Hu_1904a Lick Obs. Bull. 2, 180, 1904
Hu_1904b Ma - Hussey, W.J. 1904LicOB...3...53H
Hu_1904b Lick Obs. Bull. 3, 53, 1904
Hu_1905a Ma - Hussey, W.J. 1905LicOB...3...95H
Hu_1905a Lick Obs. Bull. 3, 95, 1905
Hu_1905b Ma - Hussey, W.J. 1905LicOB...3..116H
Hu_1905b Lick Obs. Bull. 3, 116, 1905
Hu_1905c Ma - Hussey, W.J. 1905LicOB...3..151H
Hu_1905c Lick Obs. Bull. 3, 151, 1905
Hu_1906A Ma - Hussey, W.J. 1906MmRAS..56....1L
Hu_1906A cited by Lewis (MemRAS 56, 1, 1906)
Hu_1906B Ma - Hussey, W.J. 1906QB821.B972.....
Hu_1906B cited in BDS (Burnham Double Star Cat.), 1906
Hu_1907 Ma - Hussey, W.J. 1907LicOB...4..124H
Hu_1907 Lick Obs. Bull. 4, 124, 1907
Hu_1910 Ma - Hussey, W.J. 1910AJ.....21..105H
Hu_1910 AJ 21, 105, 1910
Hu_1911 Ma - Hussey, W.J. 1911LicOB...6..182H
Hu_1911 Lick Obs. Bull. 6, 182, 1911
Hu_1912a Ma - Hussey, W.J. 1915POMic...1..147H
Hu_1912a Pub. Univ. Michigan Obs. 1, 147, 1912
Hu_1912b Ma - Hussey, W.J. 1915POMic...1..160H
Hu_1912b Pub. Univ. Michigan Obs. 1, 160, 1912
Hu_1912c Ma - Hussey, W.J. 1915POMic...1..167H
Hu_1912c Pub. Univ. Michigan Obs. 1, 167, 1912
Hu_1927A Ma - Hussey, W.J. 1927sdsc.book......
Hu_1927A cited in SDS (Southern Double Star Cat.), 1927
Hu_1932A Ma - Hussey, W.J. 1932QB821.A43......
Hu_1932A cited in ADS (Aitken Double Star Cat.), 1932
Hu_9999 Ma - Hussey, W.J. ...................
Hu_9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18221+4821 HU 582 2002 8 192 2.3 8.46 11.18 G5 D 182208.96+482127.1
18221+4821 HU 582 2016 9 191 2.3 8.46 11.18 G5 182208.96+482127.1

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

 
 
WDS 18221+4821 HU 582 (HD 169431) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18221+4821 HU 582 (HD 169431) : MEASURES
 
 
No records found.

 
 
WDS 18221+4821 (HD 169431) : VIRTUAL EYEPIECE
 
 

18221+4821 HU 582A mag 8.46 Sp G5 18221+4821 HU 582B sep 2.2 P.A. 187.40 mag 11.18 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 18221+4821 (HD 169431) : ALADIN DSS IMAGE @ 18h 22m 08.96s +48° 21' 27.1"
 
 
 
 
WDS 18221+4821 HU 582 (HD 169431) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18221+4821 HU 582 distance=0' 18253+4846 HU 66AB distance=40' 18253+4846 STT 351AC distance=40' 18253+4846 HU 66BC distance=40' 18192+4754 UC 3553 distance=40' 18268+4822 COU2277 distance=47' 18179+4743 TDT 780 distance=58' 18273+4852 TDT 880 distance=60' 18169+4856 LDS5174AB distance=63' 18193+4724 ES 1158 distance=65' 18263+4917 TDT 868 distance=70' 18272+4913 RAO 392 distance=72' 18294+4813 TDT 905 distance=73' 18146+4827 SHN 228 distance=76' 18296+4851 ES 2667AB distance=80' 18296+4851 CRB 4BC distance=80' 18161+4729 COU2120 distance=80' 18276+4926 COU2278 distance=83' 18308+4810 KPP 415 distance=88' 18145+4737 COU2119 distance=89' 18197+4654 TDS 916 distance=91' 18283+4930 TDT 896 distance=92' 18253+4653 BU 134 distance=94' 18291+4928 UC 3589 distance=96' 18264+4649 STT 352 distance=103' 18322+4755 KPP2097 distance=105' 18117+4758 COU2116 distance=108' 18334+4823 TDS 928 distance=112' 18119+4733 COU2117 distance=115' 18133+4944 HDS2572 distance=120' 18099+4824 STF2293AB distance=123' 18164+5014 JNN 117DE distance=126' 18164+5014 UC 3540CD distance=126' 18095+4829 TDT 713 distance=127' 18277+5016 LEP 158 distance=127' 18118+4955 COU2393 distance=138' 18121+4644 COU2118 distance=141' 18147+5027 TDT 760 distance=145' 18328+4644 BRT1918 distance=146' 18109+4958 KPP3328 distance=147' 18182+5050 ES 647 distance=154' 18224+4545 A 700 distance=157' 18116+5027 ES 782 distance=163' 18242+4540 UC 240 distance=163' 18386+4901 CBL 171 distance=168' 18172+5103 AG 220 distance=169' 18071+4943 STT 344 distance=169' 18094+5019 UC 236 distance=171' 18049+4808 STT 343 distance=173' 18097+5024 HU 674 distance=173' 18110+5038 HDS2564 distance=175' 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 18221+4821 HU 582 191 2.3
Show 18253+4846 HU 66 AB 197 0.2 40
Show 18253+4846 STT 351 AC 26 1.0 40
Show 18253+4846 HU 66 BC 26 0.8 40
Show 18192+4754 UC 3553 99 15.8 40
Show 18268+4822 COU2277 320 0.2 47
Show 18179+4743 TDT 780 165 0.5 58
Show 18273+4852 TDT 880 217 1.6 60
Show 18169+4856 LDS5174 AB 155 109.7 63
Show 18193+4724 ES 1158 197 4.9 65
Show 18263+4917 TDT 868 109 0.5 70
Show 18272+4913 RAO 392 129 0.9 72
Show 18294+4813 TDT 905 110 2.0 73
Show 18146+4827 SHN 228 -1 0.1 76
Show 18296+4851 ES 2667 AB 67 13.7 80
Show 18296+4851 CRB 4 BC 291 3.2 80
Show 18161+4729 COU2120 107 3.2 80
Show 18276+4926 COU2278 15 1.4 83
Show 18308+4810 KPP 415 9 3.7 88
Show 18145+4737 COU2119 275 1.3 89
Show 18197+4654 TDS 916 201 0.9 91
Show 18283+4930 TDT 896 152 8.8 92
Show 18253+4653 BU 134 125 1.1 94
Show 18291+4928 UC 3589 32 17.0 96
Show 18264+4649 STT 352 221 24.2 103
Show 18322+4755 KPP2097 171 16.9 105
Show 18117+4758 COU2116 302 1.4 108
Show 18334+4823 TDS 928 317 1.9 112
Show 18119+4733 COU2117 119 0.4 115
Show 18133+4944 HDS2572 69 14.6 120
Show 18099+4824 STF2293 AB 83 12.8 123
Show 18164+5014 JNN 117 DE 333 0.7 126
Show 18164+5014 UC 3540 CD 177 19.5 126
Show 18095+4829 TDT 713 332 0.5 127
Show 18277+5016 LEP 158 238 5.1 127
Show 18118+4955 COU2393 78 1.9 138
Show 18121+4644 COU2118 274 0.1 141
Show 18147+5027 TDT 760 139 0.5 145
Show 18328+4644 BRT1918 190 4.2 146
Show 18109+4958 KPP3328 63 4.1 147
Show 18182+5050 ES 647 291 2.4 154
Show 18224+4545 A 700 128 0.6 157
Show 18116+5027 ES 782 114 8.7 163
Show 18242+4540 UC 240 314 63.6 163
Show 18386+4901 CBL 171 260 47.5 168
Show 18172+5103 AG 220 126 10.9 169
Show 18071+4943 STT 344 140 2.3 169
Show 18094+5019 UC 236 322 13.5 171
Show 18049+4808 STT 343 79 3.3 173
Show 18097+5024 HU 674 213 0.7 173
Show 18110+5038 HDS2564 306 0.4 175

 
 
WDS 18221+4821 : COMPONENTS
 
 
  A
B pa=187.4°
sep=2.24"
 
 
18221+4821 A
 
 
Componente originario normalizzato AB Name HD 169431 Coord arcsec 2000 182208.96+482127.1 Mag 8.46
Spectral class G5 (yellow) PmRA -11.00 PmDE 22.0 SAO 47429
HIP 90025 Tycho2 3529-01396-1 HD 169431 ADS 11301
BD BD+48 2683
Tycho2
Tycho2 3529-01396-1 Pflag RAmdeg 275.53734947 DEmdeg 48.35753362
PmRA -10.8 PmDE 22.1 E RAmdeg 7 E DEmdeg 7
E pmRA 1.5 E pmDE 1.6 EpRAm 1991.09 EpDEm 1991.13
Num 7 Q RAmdeg 0.4 Q DEmdeg 1.7 Q pmRA 0.4
Q pmDE 1.8 BTmag 8.995 E BTmag 0.017 VTmag 8.457
E VTmag 0.013 Prox 22 TYC T HIP 90025
CCDM A RAdeg 275.53738806 DEdeg 48.35748306 EpRA 1990 1.56
EpDE 1990 1.58 E RAdeg 7.0 E DEdeg 6.6 Posflg
Corr 0.0
SAO
SAO 47429 DelFlag RA1950 PmRA1950 -0.0047
DE1950 PmDE1950 0.048 Vmag 8 SpType G5
Double code Source 3 CatNum 1408 DM BD+48 2683
DMcomp BDsup HD 169431 M HD 0
GC RA1950rad 4.80328664 DE1950rad 0.8435407 PmRA2000 -0.0042
PmDE2000 0.048
Hipparcos
Catalog H HIP 90025 Proxy H RAhms 18 22 08.97
DEdms +48 21 26.9 Vmag 8.31 VarFlag R Vmag G
RAdeg 275.537 DEdeg 48.3575 AstroRef A Plx 4.02
CCDM 18221+4821 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 191 Rho 2.237 HD 169431 BD BD+48 2683
CD CP Dm number +48 2683 VIred 0.56
SpType G5 R SpType Coord arcsec 2000 182208.97+482126.9
Hipparcos 2
HIP 90025 Sn 15 So 3 Nc 2
RArad 4.8090346465 DErad 0.8439972756 Plx 4.2 PmRA -9.72
PmDE 16.43 E RArad 0.55 E DErad 0.42 E Plx 0.59
E pmRA 0.6 E pmDE 0.61 Hpmag 8.4226 E Hpmag 0.0015
SHp 0.011 VA 0 BV 0.72 E BV 0.126
VI 0.56
CCDM
Ccdm 18221+4821 RComp Comp A Note1
Note2 Discov num DRAs 2.97 DDEs 26.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.0 Sp G5 PmNote *
PmRA -14 PmDE 15 Dm number +48 2683 Cat1 BD
Name2 +48 1408 Cat2 AGK2/3 HD 169431 M HD
ADS BDS A11301 M ADS BDS N IDS IDS 18195N4818A
HIC 90025
 
 
18221+4821 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 182208.93+482124.9 Mag 11.18 PmRA -9.00
PmDE 16.0 Calc delta mag 2.72 Calc coord yes
CCDM
Ccdm 18221+4821 RComp Comp B Note1
Note2 Discov num HU 582 DRAs DDEs
R dRAs Year 1902 Theta 195 Rho 2.1
Obs 3 Vmag 12.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11301 M ADS BDS N IDS IDS 18195N4818B
HIC 90025