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Doubles in session


Current system
20531-0651
J 2326
HD 198816


Nearby doubles
8' : 20534-0657
GWP3012

29' : 20534-0719
RST4685

38' : 20531-0728
BRT 556

45' : 20502-0640
FMR 19

71' : 20560-0555
UC 4333

71' : 20572-0612
GRF 4

73' : 20567-0600
J 2330AB

74' : 20482-0648
RST4681

78' : 20514-0538
STF2729AB

85' : 20475-0646
SKF1769

85' : 20490-0749
UC 4297

89' : 20482-0601
TOK 341

91' : 20507-0529
BRT 507

91' : 20509-0815
SHN 247

94' : 20594-0652
SKF1773

97' : 20499-0815
J 2322AB

101' : 20495-0815
TDT2563

101' : 20599-0653
UC 4355

110' : 21005-0642
CVR 881

115' : 20559-0504
HJ 5514AB

116' : 21008-0704
UC 4361

116' : 20455-0716
A 3000

118' : 20453-0646
RST4680

119' : 21011-0657
WAA 49

120' : 20595-0804
RST3275

121' : 20562-0459
BRT 510



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.

20531-0651 J 2326 (HD 198816)

 
 
20h 53m 07.34s -06° 50' 44.6" P.A. 80.00 sep 8.1 mag 10.34,10.51 Sp G0
 
 
Coord 2000 20531-0651 Discov num J  2326 Comp Coord arcsec 2000 20 53 07.34 -06 50 44.6
Date first 1892 Date last 2016 Obs 16
Pa first 12 Pa last 79.5 P.A. Now (θ) 79.5°
Sep first 7.9 Sep last 8.086 Sep. Now (ρ) 8.086"
Mag pri 10.34 Mag sec 10.51 delta mag (ΔM) 0.17 Spectral class G0 (yellow)
Pri motion ra -008 Sec motion ra
Pri motion dec +007 Sec motion dec
Notes U (Proper motion indicates non-physical)
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 198816 Constellation Aquarius Tycho2 5191-00653-2 Gaia DR2 6910140485597027584
HD 198816
 
 
WDS 20531-0651 J 2326 (HD 198816) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
J__1908 Ma - Jonckheere, R. 1908BuAsI..25..458J
J__1908 Bull. Astronomique 25, 458, 1908
J__1909a Ma - Jonckheere, R. ...................
J__1909a Journal Astronomique 1, no. 1, 1, 1909
J__1909b Ma - Jonckheere, R. ...................
J__1909b Journal Astronomique 1, no. 2, 1909
J__1909c Ma - Jonckheere, R. ...................
J__1909c Journal Astronomique 1, no. 3, 1909
J__1910a Ma j Jonckheere, R. ...................
J__1910a Journal Astronomique 1, no. 4, 25, 1910
J__1910b Ma - Jonckheere, R. ...................
J__1910b Journal Astronomique 1, no. 5, 1910
J__1910c Ma j Jonckheere, R. ...................
J__1910c Journal Astronomique 1, no. 7, 1910
J__1910d Ma - Jonckheere, R. ...................
J__1910d Journal Astronomique 1, no. 7, 1910
J__1910e Ma j Jonckheere, R. ...................
J__1910e Journal Astronomique 1, no. 7, 1910
J__1910f Ma j Jonckheere, R. ...................
J__1910f Journal Astronomique 1, no. 10, 77, 1910
J__1910g Ma - Jonckheere, R. ...................
J__1910g Journal Astronomique 1, no. 11, 81, 1910
J__1910h Ma j Jonckheere, R. ...................
J__1910h Journal Astronomique 1, no. 12, 89, 1910
J__1910i Ma j Jonckheere, R. ...................
J__1910i Journal Astronomique 1, no. 13, 98, 1910
J__1911a Ma - Jonckheere, R. ...................
J__1911a Journal Astronomique 1, no. 15, 114, 1911
J__1911b Ma j Jonckheere, R. ...................
J__1911b Journal Astronomique 1, no. 16, 121, 1911
J__1911c Ma j Jonckheere, R. 1911MNRAS..71..750J
J__1911c MNRAS 71, 750, 1911
J__1911d Ma - Jonckheere, R. 1911MNRAS..72...45J
J__1911d MNRAS 72, 45, 1911
J__1911e Ma - Jonckheere, R. 1911MNRAS..72..156J
J__1911e MNRAS 72, 156, 1911
J__1911f Ma j Jonckheere, R. 1911MNRAS..72..162J
J__1911f MNRAS 72, 162, 1911
J__1912a Ma j Jonckheere, R. 1912MNRAS..72..188J
J__1912a MNRAS 72, 188, 1912
J__1912b Ma j Jonckheere, R. ...................
J__1912b Journal Astronomique 1, no. 17, 129, 1912
J__1912c Ma - Jonckheere, R. ...................
J__1912c Journal Astronomique 1, no. 19, 134, 1912
J__1912d Ma j Jonckheere, R. ...................
J__1912d Journal Astronomique 1, no. 21, 145, 1912
J__1912e Ma - Jonckheere, R. ...................
J__1912e Journal Astronomique 1, no. 22, 148, 1912
J__1912f Ma j Jonckheere, R. ...................
J__1912f Journal Astronomique 1, no. 23, 150, 1912
J__1912g Ma j Jonckheere, R. ...................
J__1912g Journal Astronomique 2, no. 25, 1, 1912
J__1912h Ma - Jonckheere, R. ...................
J__1912h Journal Astronomique 2, no. 26, 5, 1912
J__1913a Ma j Jonckheere, R. ...................
J__1913a Journal Astronomique 2, no. 27, 9, 1913
J__1913b Ma j Jonckheere, R. ...................
J__1913b Journal Astronomique 2, no. 28, 13, 1913
J__1914 Ma - Jonckheere, R. ...................
J__1914 Journal Astronomique 2, no. 29, 18, 1914
J__1917a Ma - Jonckheere, R. 1917MmRAS..61....1J
J__1917a MemRAS 61, 1, 1917
J__1917c Ma j Jonckheere, R. 1917AJ.....31....1J
J__1917c AJ 31, 1, 1917
J__1918 Ma - Jonckheere, R. 1918AJ.....31..113J
J__1918 AJ 31, 113, 1918
J__1918b Ma j Jonckheere, R. 1918MNRAS..78..479J
J__1918b MNRAS 78, 479, 1918
J__1919 Ma j Jonckheere, R. 1919AJ.....32...65J
J__1919 AJ 32, 65, 1919
J__1920 Ma - Jonckheere, R. 1920AJ.....32..166J
J__1920 AJ 32, 166, 1920
J__1924 Ma - Jonckheere, R. 1924AJ.....35..173J
J__1924 +Mb AJ 35, 173, 1924
J__1930 Ma j Jonckheere, R. 1930JO.....13...76J
J__1930 J. Obs. 13, 76, 1930
J__1941a Ma - Jonckheere, R. 1941JO.....24...21J
J__1941a J. Obs. 24, 21, 1941
J__1941b Ma - Jonckheere, R. 1941JO.....24...69J
J__1941b +Mb J. Obs. 24, 69, 1941
J__1941c Ma - Jonckheere, R. 1941JO.....24...93J
J__1941c +Mb J. Obs. 24, 93, 1941
J__1941d Ma - Jonckheere, R. 1941JO.....24..114J
J__1941d +Mb J. Obs. 24, 114, 1941
J__1942a Ma - Jonckheere, R. 1942JO.....25...11J
J__1942a J. Obs. 25, 11, 1942
J__1942b Ma - Jonckheere, R. 1942JO.....25...15J
J__1942b J. Obs. 25, 15, 1942
J__1942c Ma - Jonckheere, R. 1942JO.....25...25J
J__1942c +Mb J. Obs. 25, 25, 1942
J__1942d Mb - Jonckheere, R. 1942JO.....25...78J
J__1942d J. Obs. 25, 78, 1942
J__1943 Ma - Jonckheere, R. 1943JO.....26...28J
J__1943 +Mb J. Obs. 26, 28, 1943
J__1944a Ma j Jonckheere, R. 1944JO.....27....1J
J__1944a +Mb J. Obs. 27, 1, 1944
J__1944b Ma - Jonckheere, R. 1944JO.....27....5J
J__1944b J. Obs. 27, 5, 1944
J__1944c Mb - Jonckheere, R. 1944JO.....27....6J
J__1944c J. Obs. 27, 6, 1944
J__1944d Ma j Jonckheere, R. 1944JO.....27....7J
J__1944d +Mb J. Obs. 27, 7, 1944
J__1944e Ma - Jonckheere, R. 1944JO.....27...11J
J__1944e J. Obs. 27, 11, 1944
J__1945 Ma - Jonckheere, R. 1945JO.....28...26J
J__1945 +Mb J. Obs. 28, 26, 1945
J__1946 Mb j Jonckheere, R. 1946JO.....29...49J
J__1946 J. Obs. 29, 49, 1946
J__1948 Ma j Jonckheere, R. 1948JO.....31...65J
J__1948 J. Obs. 31, 65, 1948
J__1949a Ma j Jonckheere, R. 1949JO.....32...13J
J__1949a +Mb J. Obs. 32, 13, 1949
J__1949b Ma j Jonckheere, R. 1949JO.....32...81J
J__1949b +Mb J. Obs. 32, 81, 1949
J__1952 M+ j Jonckheere, R. 1952JO.....35...37J
J__1952 +Pa J. Obs. 35, 37, 1952
J__1953a Ma - Jonckheere, R. 1953JO.....36...44J
J__1953a J. Obs. 36, 44, 1953
J__1953b Mb j Jonckheere, R. 1953JO.....36...49J
J__1953b J. Obs. 36, 49, 1953
J__1954 Mb j Jonckheere, R. 1954JO.....37...13J
J__1954 J. Obs. 37, 13, 1954
J__1955 Mb - Jonckheere, R. 1955JO.....38..254J
J__1955 J. Obs. 38, 254, 1955
J__1957 Mb j Jonckheere, R. 1957JO.....40....1J
J__1957 J. Obs. 40, 1, 1957
J__1958 Mb j Jonckheere, R. 1958JO.....41..145J
J__1958 J. Obs. 41, 145, 1958
J__1962a M+ j Jonckheere, R. 1962QB821.J64......
J__1962a +Pa General Cat. of Double Stars, Marseille, 1962
J__1962b Ma - Jonckheere, R. (measure by Vanderdonck, J.) 1962QB821.J64......
J__1962b General Cat. of Double Stars, Marseille, 1962
J__1963A - Jonckheere, R. 1963icvd.book.....J
J__1963A cited in IDS (Lick Index Cat.), 1963
J__9999 Ma - Jonckheere, R. ...................
J__9999 +Pp 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
20531-0651 J 2326 2005 8 67 7.4 10.34 10.51 G0 D 205307.34-065044.6
20531-0651 J 2326 2010 9 77 7.8 10.34 10.51 G0 D 205307.34-065044.6
20531-0651 J 2326 2013 11 78 8.0 10.34 10.51 G0 205307.34-065044.6
20531-0651 J 2326 2016 13 80 8.1 10.34 10.51 G0 U 205307.34-065044.6

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

 
 
WDS 20531-0651 J 2326 (HD 198816) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20531-0651 J 2326 (HD 198816) : MEASURES
 
 
No records found.

 
 
WDS 20531-0651 (HD 198816) : VIRTUAL EYEPIECE
 
 

20531-0651 J 2326A mag 10.34 Sp G0 20531-0651 J 2326B sep 8.0 P.A. 79.40 mag 10.51 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 20531-0651 (HD 198816) : ALADIN DSS IMAGE @ 20h 53m 07.34s -06° 50' 44.6"
 
 
 
 
WDS 20531-0651 J 2326 (HD 198816) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20531-0651 J 2326 distance=0' 20534-0657 GWP3012 distance=8' 20534-0719 RST4685 distance=29' 20531-0728 BRT 556 distance=38' 20502-0640 FMR 19 distance=45' 20560-0555 UC 4333 distance=71' 20572-0612 GRF 4 distance=71' 20567-0600 J 2330AB distance=73' 20567-0600 J 2330AC distance=73' 20482-0648 RST4681 distance=74' 20514-0538 STF2729AB distance=78' 20514-0538 STF2729AC distance=78' 20514-0538 STF2729AD distance=78' 20475-0646 SKF1769 distance=85' 20490-0749 UC 4297 distance=85' 20482-0601 TOK 341 distance=89' 20507-0529 BRT 507 distance=91' 20509-0815 SHN 247 distance=91' 20594-0652 SKF1773 distance=94' 20499-0815 J 2322AB distance=97' 20495-0815 TDT2563 distance=101' 20599-0653 UC 4355 distance=101' 21005-0642 CVR 881 distance=110' 20559-0504 HJ 5514AB distance=115' 20559-0504 HJ 5514AC distance=115' 21008-0704 UC 4361 distance=116' 20455-0716 A 3000 distance=116' 20453-0646 RST4680 distance=118' 21011-0657 WAA 49 distance=119' 20595-0804 RST3275 distance=120' 20562-0459 BRT 510 distance=121' 20531-0450 GWP3010 distance=122' 20593-0812 AHD 31 distance=123' 20440-0631 GRV1138 distance=123' 20578-0510 J 1714 distance=123' 21001-0541 ROE 114AB distance=126' 21001-0541 ROE 114AC distance=126' 21001-0541 ROE 114AD distance=126' 20468-0527 KPP 478 distance=127' 21005-0548 ROE 148 distance=127' 20527-0859 MCA 64Aa,Ab distance=129' 20527-0859 TOK 342AB distance=129' 20499-0851 RST4683 distance=129' 20587-0511 KPP 928 distance=130' 20447-0721 A 2999 distance=130' 21004-0537 TDT2690 distance=131' 20568-0449 LDS6420 distance=132' 21001-0530 UC 4356 distance=132' 20525-0438 TDS1106 distance=133' 21014-0539 CHE 304 distance=136' 20455-0809 HJ 925 distance=138' 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 20531-0651 J 2326 80 8.1
Show 20534-0657 GWP3012 289 119.4 8
Show 20534-0719 RST4685 81 2.1 29
Show 20531-0728 BRT 556 109 2.5 38
Show 20502-0640 FMR 19 333 4.2 45
Show 20560-0555 UC 4333 184 73.7 71
Show 20572-0612 GRF 4 30 13.1 71
Show 20567-0600 J 2330 AB 115 6.4 73
Show 20567-0600 J 2330 AC 106 27.7 73
Show 20482-0648 RST4681 243 0.3 74
Show 20514-0538 STF2729 AB 35 0.7 78
Show 20514-0538 STF2729 AC 311 74.3 78
Show 20514-0538 STF2729 AD 324 137.3 78
Show 20475-0646 SKF1769 244 2.0 85
Show 20490-0749 UC 4297 261 21.3 85
Show 20482-0601 TOK 341 261 391.4 89
Show 20507-0529 BRT 507 69 9.2 91
Show 20509-0815 SHN 247 -1 0.5 91
Show 20594-0652 SKF1773 31 1.7 94
Show 20499-0815 J 2322 AB 8 3.9 97
Show 20495-0815 TDT2563 92 0.6 101
Show 20599-0653 UC 4355 21 32.1 101
Show 21005-0642 CVR 881 127 11.1 110
Show 20559-0504 HJ 5514 AB 113 19.5 115
Show 20559-0504 HJ 5514 AC 4 7.6 115
Show 21008-0704 UC 4361 52 39.2 116
Show 20455-0716 A 3000 64 0.7 116
Show 20453-0646 RST4680 235 0.1 118
Show 21011-0657 WAA 49 171 6.1 119
Show 20595-0804 RST3275 5 1.9 120
Show 20562-0459 BRT 510 314 4.8 121
Show 20531-0450 GWP3010 318 68.5 122
Show 20593-0812 AHD 31 161 10.6 123
Show 20440-0631 GRV1138 50 33.2 123
Show 20578-0510 J 1714 94 10.2 123
Show 21001-0541 ROE 114 AB 307 6.5 126
Show 21001-0541 ROE 114 AC 227 38.8 126
Show 21001-0541 ROE 114 AD 138 92.0 126
Show 20468-0527 KPP 478 273 3.8 127
Show 21005-0548 ROE 148 88 12.8 127
Show 20527-0859 MCA 64 Aa,Ab 127 0.0 129
Show 20527-0859 TOK 342 AB 114 503.2 129
Show 20499-0851 RST4683 22 1.5 129
Show 20587-0511 KPP 928 341 7.6 130
Show 20447-0721 A 2999 221 2.1 130
Show 21004-0537 TDT2690 293 0.7 131
Show 20568-0449 LDS6420 309 15.1 132
Show 21001-0530 UC 4356 325 25.1 132
Show 20525-0438 TDS1106 252 1.4 133
Show 21014-0539 CHE 304 280 7.1 136
Show 20455-0809 HJ 925 174 10.1 138

 
 
WDS 20531-0651 : COMPONENTS
 
 
  A
B pa=79.4°
sep=8.03"
 
 
20531-0651 A
 
 
Componente originario normalizzato AB Name HD 198816 Coord arcsec 2000 205307.34-065044.6 Mag 10.34
Spectral class G0 (yellow) PmRA -8.00 PmDE 7.0 Tycho2 5191-00653-2
HD 198816 DM BD-07 5430
Tycho2
Tycho2 5191-00653-2 Pflag RAmdeg 313.28058799 DEmdeg -6.84572535
PmRA -8.8 PmDE 5.8 E RAmdeg 28 E DEmdeg 31
E pmRA 1.6 E pmDE 1.7 EpRAm 1988.17 EpDEm 1987.44
Num 4 Q RAmdeg 1.2 Q DEmdeg 1.5 Q pmRA 1.2
Q pmDE 1.5 BTmag 10.828 E BTmag 0.051 VTmag 10.343
E VTmag 0.047 Prox 73 TYC T HIP
CCDM RAdeg 313.28060861 DEdeg -6.84573944 EpRA 1990 1.53
EpDE 1990 1.35 E RAdeg 29.2 E DEdeg 32.2 Posflg
Corr -0.4
 
 
20531-0651 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205307.87-065043.1 Mag 10.51 Calc delta mag 0.17
Calc coord yes