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Doubles in session


Current system
18223+2036
L 20
HD 348438


Nearby doubles
7' : 18225+2030
DAM 282

8' : 18218+3038
L 21

12' : 18216+2030
HO 430

16' : 18218+2023
DAM 281

18' : 18227+2053
DAM 283

20' : 18225+2056
AZC 104

27' : 18241+2027
HO 652

27' : 18240+2023
CLZ 74

31' : 18204+2048
WFC 206

32' : 18245+2028
BU 1325

33' : 18205+2055
COU 202

40' : 18218+2115
FUR 4

41' : 18203+2104
HDS2592

42' : 18208+2114
FUR 3

55' : 18200+2120
AG 221AB

55' : 18218+2130
BU 641

56' : 18206+2126
UC 3554

58' : 18253+2116
TDT 850AB

66' : 18258+1952
BRT2446AB

70' : 18183+2114
LDS4784

72' : 18173+2025
J 759

73' : 18237+2146
STT 587AB

74' : 18249+1932
TDT 845

74' : 18273+2012
TDS 922

78' : 18250+1928
VAT 3

78' : 18254+1932
TDT 851



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.

18223+2036 L 20 (HD 348438)

 
 
18h 22m 21.28s +20° 36' 08.3" P.A. 337.00 sep 2.2 mag 11.36,12.36
 
 
Coord 2000 18223+2036 Discov num L    20 Comp Coord arcsec 2000 18 22 21.28 +20 36 08.3
Date first 1897 Date last 2016 Obs 8
Pa first 337 Pa last 336.7 P.A. Now (θ) 336.7°
Sep first 2.1 Sep last 2.17 Sep. Now (ρ) 2.17"
Mag pri 11.36 Mag sec 12.36 delta mag (ΔM) 1 Spectral class
Pri motion ra +002 Sec motion ra +002
Pri motion dec -001 Sec motion dec -001
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 348438 Constellation Hercules Tycho2 1576-01235-1 Gaia DR2 4528506765497229952
HD 348438
 
 
WDS 18223+2036 L 20 (HD 348438) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
L__1891 orb - Lewis, T. 1891MNRAS..51..462L
L__1891 MNRAS 51, 462, 1891
L__1894a Ma - Lewis, T. 1894MNRAS..54..314.
L__1894a MNRAS 54, 314, 1894
L__1894b Ma - Lewis, T. (measure by Edney, D.J.) 1894MNRAS..54..314.
L__1894b MNRAS 54, 314, 1894
L__1894c Ma j Lewis, T. (measure by Turner, H.) 1894MNRAS..54..314.
L__1894c MNRAS 54, 314, 1894
L__1894d Ma - Lewis, T. 1894RGOO...........
L__1894d Greenwich Observations, 1894
L__1894e orb - Lewis, T. 1894MNRAS..55...19L
L__1894e MNRAS 55, 19, 1894; MNRAS 55, 341, 1894
L__1895a Ma - Lewis, T. 1895RGOO...........
L__1895a Greenwich Observations, 1895
L__1895b Ma - Lewis, T. (measure by Bowyer, W.M.) 1895RGOO...........
L__1895b Greenwich Observations, 1895
L__1895c Ma - Lewis, T. (measure by Christie, W.H.) 1895RGOO...........
L__1895c Greenwich Observations, 1895
L__1895d Ma - Lewis, T. (measure by Hollis, H.P.) 1895RGOO...........
L__1895d Greenwich Observations, 1895
L__1895e Ma - Lewis, T. (measure by Maunder, E.W.) 1895RGOO...........
L__1895e Greenwich Observations, 1895
L__1895f Ma - Lewis, T. (measure by Niblett) 1895RGOO...........
L__1895f Greenwich Observations, 1895
L__1895g orb - Lewis, T. 1895MNRAS..56...33L
L__1895g MNRAS 56, 33, 1895
L__1896a Ma j Lewis, T. 1896RGOO...........
L__1896a Greenwich Observations, 1896 (data also in MNRAS 59, 400, 1899) 1899MNRAS..59..400.
L__1896b Ma - Lewis, T. (measure by Edney, D.J.) 1896RGOO...........
L__1896b Greenwich Observations, 1896 (data also in MNRAS 59, 400, 1899) 1899MNRAS..59..400.
L__1896c Ma j Lewis, T. (measure by Melotte, P.) 1896RGOO...........
L__1896c Greenwich Observations, 1896 (data also in MNRAS 59, 400, 1899) 1899MNRAS..59..400.
L__1896d Ma - Lewis, T. (measure by Niblett) 1896RGOO...........
L__1896d Greenwich Observations, 1896 (data also in MNRAS 59, 400, 1899) 1899MNRAS..59..400.
L__1897 Ma - Lewis, T. 1897RGOO...........
L__1897 +Po Greenwich Observations, 1897
L__1898a Ma j Lewis, T. 1898RGOO...........
L__1898a Greenwich Observations, 1898
L__1898b Ma - Lewis, T. (measure by Cowell, P.H.) 1898RGOO...........
L__1898b Greenwich Observations, 1898
L__1898c Ma - Lewis, T. (measure by Melotte, P.) 1898RGOO...........
L__1898c Greenwich Observations, 1898
L__1899a Ma j Lewis, T. 1899RGOO...........
L__1899a Greenwich Observations, 1899 (data also in MNRAS 60, 494, 1900) 1900MNRAS..60..494.
L__1899b Ma - Lewis, T. (measure by Cowell, P.H.) 1899RGOO...........
L__1899b Greenwich Observations, 1899 (data also in MNRAS 60, 494, 1900) 1900MNRAS..60..494.
L__1899c Ma - Lewis, T. (measure by Dyson, F.) 1899RGOO...........
L__1899c Greenwich Observations, 1899 (data also in MNRAS 60, 494, 1900) 1900MNRAS..60..494.
L__1899d Ma j Lewis, T. (measure by Melotte, P.) 1899RGOO...........
L__1899d Greenwich Observations, 1899 (data also in MNRAS 60, 494, 1900) 1900MNRAS..60..494.
L__1900 Ma j Lewis, T. 1900RGOO...........
L__1900 Greenwich Observations, 1900 (data also in MNRAS 61, 486, 1901) 1901MNRAS..61..486.
L__1900c Ma - Lewis, T. 1900MNRAS..60..595.
L__1900c MNRAS 60, 595, 1900
L__1901 Ma - Lewis, T. 1901RGOO...........
L__1901 Greenwich Observations, 1901 (data also in MNRAS 62, 383, 1902) 1902MNRAS..62..383E
L__1902a Ma - Lewis, T. 1902RGOO...........
L__1902a Greenwich Observations, 1902 (data also in MNRAS 63, 403, 1903) 1903MNRAS..63..403.
L__1903 Ma - Lewis, T. 1903RGOO...........
L__1903 Greenwich Observations, 1903 (data also in MNRAS 64, 789, 1904) 1904MNRAS..64..789.
L__1904 Ma j Lewis, T. 1904RGOO...........
L__1904 Greenwich Observations, 1904 (data also in MNRAS 66, 17, 1905) 1905MNRAS..66...17L
L__1905 Ma - Lewis, T. 1905RGOO...........
L__1905 Greenwich Observations, 1905
L__1906a Ma - Lewis, T. 1906RGOO...........
L__1906a Greenwich Observations, 1906 (data also in MNRAS 68, 39, 1907) 1907MNRAS..68...39.
L__1906b Ma - Lewis, T. 1906MmRAS..56....1L
L__1906b +orb MemRAS 56, 1906
L__1907 Ma j Lewis, T. 1907RGOO...........
L__1907 Greenwich Observations, 1907 (data also in MNRAS 68, 525, 1908) 1908MNRAS..68..525L
L__1908 Ma - Lewis, T. 1908RGOO...........
L__1908 Greenwich Observations, 1908 (data also in MNRAS 69, 588, 1909) 1909MNRAS..69..588.
L__1909 Ma - Lewis, T. 1909RGOO...........
L__1909 Greenwich Observations, 1909 (data also in MNRAS 70, 630, 1910) 1910MNRAS..70..630.
L__1911 Ma j Lewis, T. 1911MNRAS..71..728.
L__1911 MNRAS 71, 728, 1911
L__1912 Ma - Lewis, T. 1912MNRAS..73...93E
L__1912 MNRAS 73, 93, 1912 (all data also in L__1921)
L__1921 Ma - Lewis, T. .
L__1921 Greenwich Cat. of Double Stars, 1921
L__1932A Ma - Lewis, T. 1932QB821.A43......
L__1932A cited in ADS (Aitken Double Star Cat.), 1932
L__1937A Ma - Lewis, T. 1937AnLei..18....1S
L__1937A cited by Strand (Ann. Sterrew. Leiden 18, 1937)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18223+2036 L 20 1991 5 334 2.4 11.36 12.36 182221.28+203608.3
18223+2036 L 20 2015 6 337 2.2 11.36 12.36 182221.28+203608.3
18223+2036 L 20 2016 7 337 2.2 11.36 12.36 182221.28+203608.3

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

 
 
WDS 18223+2036 L 20 (HD 348438) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18223+2036 L 20 (HD 348438) : MEASURES
 
 
No records found.

 
 
WDS 18223+2036 (HD 348438) : VIRTUAL EYEPIECE
 
 

18223+2036 L 20A mag 11.36 18223+2036 L 20B sep 2.1 P.A. 338.00 mag 12.36 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 18223+2036 (HD 348438) : ALADIN DSS IMAGE @ 18h 22m 21.28s +20° 36' 08.3"
 
 
 
 
WDS 18223+2036 L 20 (HD 348438) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18223+2036 L 20 distance=0' 18225+2030 DAM 282 distance=7' 18218+3038 L 21 distance=8' 18216+2030 HO 430 distance=12' 18218+2023 DAM 281 distance=16' 18227+2053 DAM 283 distance=18' 18225+2056 AZC 104 distance=20' 18241+2027 HO 652 distance=27' 18240+2023 CLZ 74 distance=27' 18204+2048 WFC 206 distance=31' 18245+2028 BU 1325 distance=32' 18205+2055 COU 202 distance=33' 18218+2115 FUR 4 distance=40' 18203+2104 HDS2592 distance=41' 18208+2114 FUR 3 distance=42' 18200+2120 AG 221AB distance=55' 18200+2120 AG 221AC distance=55' 18218+2130 BU 641 distance=55' 18206+2126 UC 3554 distance=56' 18253+2116 TDT 850AB distance=58' 18258+1952 BRT2446AB distance=66' 18258+1952 BRT2446AC distance=66' 18183+2114 LDS4784 distance=70' 18173+2025 J 759 distance=72' 18237+2146 STT 587AB distance=73' 18237+2146 STG 7AC distance=73' 18237+2146 TOK 60Aa,Ab distance=73' 18249+1932 TDT 845 distance=74' 18273+2012 TDS 922 distance=74' 18250+1928 VAT 3 distance=78' 18254+1932 TDT 851 distance=78' 18166+2022 KPP3329 distance=83' 18172+1955 TDT 775 distance=84' 18210+1913 TDT 812 distance=86' 18163+2016 HO 269 distance=87' 18248+2156 BRT2445 distance=87' 18285+2010 COU 203AB distance=91' 18285+2010 COU 203Aa,Ab distance=91' 18155+2030 RAO 385 distance=96' 18293+2052 TDT 904 distance=99' 18153+2012 J 2124 distance=102' 18225+1854 GWP2773 distance=103' 18274+2152 CBL 170 distance=104' 18277+1918 STF2319AB distance=110' 18277+1918 STF2319AD distance=110' 18277+1918 STF2319AC distance=110' 18277+1918 STF2319BC distance=110' 18154+1946 STT 346 distance=110' 18151+2136 LDS4780 distance=118' 18293+2144 J 2913AB distance=120' 18293+2144 J 2913AC distance=120' 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 18223+2036 L 20 337 2.2
Show 18225+2030 DAM 282 245 8.0 7
Show 18218+3038 L 21 91 7.1 8
Show 18216+2030 HO 430 194 2.5 12
Show 18218+2023 DAM 281 75 10.5 16
Show 18227+2053 DAM 283 253 7.8 18
Show 18225+2056 AZC 104 274 33.6 20
Show 18241+2027 HO 652 352 33.2 27
Show 18240+2023 CLZ 74 51 87.8 27
Show 18204+2048 WFC 206 45 9.4 31
Show 18245+2028 BU 1325 353 5.6 32
Show 18205+2055 COU 202 294 0.2 33
Show 18218+2115 FUR 4 32 3.1 40
Show 18203+2104 HDS2592 184 0.2 41
Show 18208+2114 FUR 3 324 2.4 42
Show 18200+2120 AG 221 AB 12 1.8 55
Show 18200+2120 AG 221 AC 9 9.7 55
Show 18218+2130 BU 641 341 0.8 55
Show 18206+2126 UC 3554 172 16.8 56
Show 18253+2116 TDT 850 AB 199 0.5 58
Show 18258+1952 BRT2446 AB 323 3.4 66
Show 18258+1952 BRT2446 AC 256 8.0 66
Show 18183+2114 LDS4784 61 121.3 70
Show 18173+2025 J 759 82 2.5 72
Show 18237+2146 STT 587 AB 323 238.0 73
Show 18237+2146 STG 7 AC 84 129.1 73
Show 18237+2146 TOK 60 Aa,Ab 280 0.0 73
Show 18249+1932 TDT 845 118 0.4 74
Show 18273+2012 TDS 922 206 2.4 74
Show 18250+1928 VAT 3 177 8.6 78
Show 18254+1932 TDT 851 4 0.6 78
Show 18166+2022 KPP3329 203 1.5 83
Show 18172+1955 TDT 775 156 0.9 84
Show 18210+1913 TDT 812 71 0.6 86
Show 18163+2016 HO 269 152 8.9 87
Show 18248+2156 BRT2445 21 2.4 87
Show 18285+2010 COU 203 AB 61 0.5 91
Show 18285+2010 COU 203 Aa,Ab 154 0.2 91
Show 18155+2030 RAO 385 87 0.8 96
Show 18293+2052 TDT 904 223 0.7 99
Show 18153+2012 J 2124 348 3.9 102
Show 18225+1854 GWP2773 285 13.8 103
Show 18274+2152 CBL 170 160 26.6 104
Show 18277+1918 STF2319 AB 190 5.3 110
Show 18277+1918 STF2319 AD 71 156.7 110
Show 18277+1918 STF2319 AC 268 43.1 110
Show 18277+1918 STF2319 BC 276 42.4 110
Show 18154+1946 STT 346 329 5.3 110
Show 18151+2136 LDS4780 206 124.5 118
Show 18293+2144 J 2913 AB 117 3.2 120
Show 18293+2144 J 2913 AC 158 15.5 120

 
 
WDS 18223+2036 : COMPONENTS
 
 
  A
B pa=338.0°
sep=2.15"
 
 
18223+2036 A
 
 
Componente originario normalizzato AB Name HD 348438 Coord arcsec 2000 182221.28+203608.3 Mag 11.36
PmRA 2.00 PmDE -1.0 Tycho2 1576-01235-1 HD 348438
Tycho2
Tycho2 1576-01235-1 Pflag RAmdeg 275.58867915 DEmdeg 20.60232401
PmRA 2.2 PmDE -0.9 E RAmdeg 48 E DEmdeg 40
E pmRA 1.5 E pmDE 1.5 EpRAm 1978.78 EpDEm 1983.07
Num 4 Q RAmdeg 0.5 Q DEmdeg 1.5 Q pmRA 0.5
Q pmDE 1.5 BTmag 12.221 E BTmag 0.116 VTmag 11.294
E VTmag 0.070 Prox 648 TYC HIP
CCDM RAdeg 275.58867417 DEdeg 20.60232583 EpRA 1990 1.32
EpDE 1990 1.64 E RAdeg 51.8 E DEdeg 41.9 Posflg
Corr -0.1
 
 
18223+2036 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 182221.22+203610.3 Mag 12.36 PmRA 2.00
PmDE -1.0 Calc delta mag 1 Calc coord yes