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Current system
21460-2642
HJ 3054
HD 206931


Nearby doubles
13' : 21467-2635
SEE 458

24' : 21477-2644
DEA 23

25' : 21474-2630
LDS4907

26' : 21468-2706
STN 55

30' : 21440-2631
HWE 57

54' : 21442-2555
RST1105

55' : 21447-2552
UC 4545

55' : 21448-2735
UC 4547AB

59' : 21432-2728
KPP4245

67' : 21422-2726
TSN 99

80' : 21423-2744
LDS5926

82' : 21497-2539
COO 245

85' : 21410-2551
SEE 452

85' : 21456-2518
UC 4552

98' : 21508-2756
HJ 3059

107' : 21416-2813
HJ 3046AB

107' : 21540-2642
B 544

108' : 21499-2509
B 540

110' : 21496-2505
UC 4575

110' : 21392-2543
NSN 494

110' : 21423-2821
RST2185

119' : 21524-2522
B 541

123' : 21412-2459
KPP1482

133' : 21406-2834
B 533

134' : 21363-2715
RST1099

135' : 21559-2701
LDS5936



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.

21460-2642 HJ 3054 (HD 206931)

 
 
21h 45m 59.21s -26° 42' 46.8" P.A. 15.00 sep 20.9 mag 10.03,10.09 Sp G0+G0
 
 
Coord 2000 21460-2642 Discov num HJ 3054 Comp Coord arcsec 2000 21 45 59.21 -26 42 46.8
Date first 1830 Date last 2015 Obs 13
Pa first 6 Pa last 14.6 P.A. Now (θ) 14.6°
Sep first 20.0 Sep last 20.938 Sep. Now (ρ) 20.938"
Mag pri 10.03 Mag sec 10.09 delta mag (ΔM) 0.06 Spectral class G0+G0 (yellow/yellow)
Pri motion ra -002 Sec motion ra +018
Pri motion dec -008 Sec motion dec +006
Notes
rPM=1.287
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 206931 Constellation Piscis Austrinus SAO 190609 Tycho2 6948-00725-1
Gaia DR2 6811173203462876672 HD 206931
 
 
WDS 21460-2642 HJ 3054 (HD 206931) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma 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
21460-2642 HJ 3054 1998 10 14 20.6 10.03 10.09 G0 G0 D 214559.21-264246.8
21460-2642 HJ 3054 1999 11 14 20.7 10.03 10.09 G0 G0 D 214559.21-264246.8
21460-2642 HJ 3054 2010 12 15 20.9 10.03 10.09 G0+G0 214559.21-264246.8
21460-2642 HJ 3054 2015 13 15 20.9 10.03 10.09 G0+G0 214559.21-264246.8

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

 
 
WDS 21460-2642 HJ 3054 (HD 206931) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21460-2642 HJ 3054 (HD 206931) : MEASURES
 
 
No records found.

 
 
WDS 21460-2642 (HD 206931) : VIRTUAL EYEPIECE
 
 

21460-2642 HJ 3054A mag 10.03 Sp G0 21460-2642 HJ 3054B sep 20.8 P.A. 13.10 mag 10.09 Sp G0 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 21460-2642 (HD 206931) : ALADIN DSS IMAGE @ 21h 45m 59.21s -26° 42' 46.8"
 
 
 
 
WDS 21460-2642 HJ 3054 (HD 206931) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21460-2642 HJ 3054 distance=0' 21467-2635 SEE 458 distance=13' 21477-2644 DEA 23 distance=24' 21474-2630 LDS4907 distance=25' 21468-2706 STN 55 distance=26' 21440-2631 HWE 57 distance=30' 21442-2555 RST1105 distance=54' 21447-2552 UC 4545 distance=55' 21448-2735 UC 4547AB distance=55' 21448-2735 UC 4547AC distance=55' 21432-2728 KPP4245 distance=59' 21422-2726 TSN 99 distance=67' 21423-2744 LDS5926 distance=80' 21497-2539 COO 245 distance=82' 21410-2551 SEE 452 distance=85' 21456-2518 UC 4552 distance=85' 21508-2756 HJ 3059 distance=98' 21416-2813 HJ 3046AB distance=107' 21416-2813 UC 4530AC distance=107' 21540-2642 B 544 distance=107' 21499-2509 B 540 distance=108' 21496-2505 UC 4575 distance=110' 21392-2543 NSN 494 distance=110' 21423-2821 RST2185 distance=110' 21524-2522 B 541 distance=119' 21412-2459 KPP1482 distance=123' 21406-2834 B 533 distance=133' 21363-2715 RST1099 distance=134' 21559-2701 LDS5936 distance=135' 21420-2439 SEE 453 distance=135' 21362-2610 RST1098AB distance=136' 21362-2610 TOK 637AC distance=136' 21563-2717 TDT3249Aa,Ab distance=143' 21563-2717 SEE 461AB distance=143' 21546-2509 BRT3103 distance=150' 21514-2853 LDS5930 distance=150' 21338-2622 RST1095 distance=165' 21528-2903 UC 4587 distance=167' 21577-2747 HJ 3068 distance=170' 21443-2348 LDS6360 distance=178' 21583-2754 DAM1265 distance=180' 21335-2753 BVD 137 distance=181' 21325-2631 RST1093 distance=183' 21389-2921 KPP4239 distance=184' 21465-2338 UC 4557 distance=185' 21587-2534 TDT3271 distance=185' 21420-2940 HDS3090 distance=186' 21395-2928 HJ 5285 distance=187' 21511-2938 LDS5929AB distance=190' 21511-2938 LDS5929Aa,Ab distance=190' 21596-2738 STN 56 distance=190' 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 21460-2642 HJ 3054 15 20.9
Show 21467-2635 SEE 458 82 1.1 13
Show 21477-2644 DEA 23 23 78.8 24
Show 21474-2630 LDS4907 295 5.1 25
Show 21468-2706 STN 55 175 3.3 26
Show 21440-2631 HWE 57 290 1.7 30
Show 21442-2555 RST1105 358 0.7 54
Show 21447-2552 UC 4545 228 63.1 55
Show 21448-2735 UC 4547 AB 62 27.8 55
Show 21448-2735 UC 4547 AC 20 1.8 55
Show 21432-2728 KPP4245 115 1.3 59
Show 21422-2726 TSN 99 275 656.2 67
Show 21423-2744 LDS5926 81 295.6 80
Show 21497-2539 COO 245 306 2.6 82
Show 21410-2551 SEE 452 113 11.0 85
Show 21456-2518 UC 4552 305 10.9 85
Show 21508-2756 HJ 3059 252 25.4 98
Show 21416-2813 HJ 3046 AB 57 29.0 107
Show 21416-2813 UC 4530 AC 246 79.9 107
Show 21540-2642 B 544 106 1.7 107
Show 21499-2509 B 540 326 0.1 108
Show 21496-2505 UC 4575 48 8.9 110
Show 21392-2543 NSN 494 265 10.3 110
Show 21423-2821 RST2185 121 3.2 110
Show 21524-2522 B 541 295 0.2 119
Show 21412-2459 KPP1482 239 11.1 123
Show 21406-2834 B 533 204 0.3 133
Show 21363-2715 RST1099 174 1.5 134
Show 21559-2701 LDS5936 18 9.3 135
Show 21420-2439 SEE 453 325 11.5 135
Show 21362-2610 RST1098 AB 7 18.2 136
Show 21362-2610 TOK 637 AC 62 999.9 136
Show 21563-2717 TDT3249 Aa,Ab 33 0.4 143
Show 21563-2717 SEE 461 AB 62 4.0 143
Show 21546-2509 BRT3103 175 3.6 150
Show 21514-2853 LDS5930 128 257.8 150
Show 21338-2622 RST1095 316 0.9 165
Show 21528-2903 UC 4587 187 10.5 167
Show 21577-2747 HJ 3068 284 13.3 170
Show 21443-2348 LDS6360 111 8.1 178
Show 21583-2754 DAM1265 94 7.6 180
Show 21335-2753 BVD 137 58 40.2 181
Show 21325-2631 RST1093 227 2.3 183
Show 21389-2921 KPP4239 79 1.6 184
Show 21465-2338 UC 4557 162 8.1 185
Show 21587-2534 TDT3271 60 0.9 185
Show 21420-2940 HDS3090 350 0.1 186
Show 21395-2928 HJ 5285 290 10.0 187
Show 21511-2938 LDS5929 AB 128 54.7 190
Show 21511-2938 LDS5929 Aa,Ab 326 1.1 190
Show 21596-2738 STN 56 36 11.3 190

 
 
WDS 21460-2642 : COMPONENTS
 
 
  A
B pa=13.1°
sep=20.80"
 
 
21460-2642 A
 
 
Componente originario normalizzato AB Name HD 206931 Coord arcsec 2000 214559.21-264246.8 Mag 10.03
Spectral class G0 (yellow) PmRA -2.00 PmDE -8.0 SAO 190609
Tycho2 6948-00725-1 HD 206931 DM CD-2715611
Tycho2
Tycho2 6948-00725-1 Pflag RAmdeg 326.49670084 DEmdeg -26.71299760
PmRA -3.9 PmDE -6.8 E RAmdeg 21 E DEmdeg 24
E pmRA 2.0 E pmDE 2.1 EpRAm 1986.21 EpDEm 1984.45
Num 5 Q RAmdeg 0.7 Q DEmdeg 1.0 Q pmRA 0.7
Q pmDE 1.0 BTmag 11.280 E BTmag 0.065 VTmag 10.025
E VTmag 0.035 Prox 205 TYC T HIP
CCDM RAdeg 326.49671222 DEdeg -26.71298583 EpRA 1990 1.69
EpDE 1990 1.56 E RAdeg 24.9 E DEdeg 30.3 Posflg
Corr -0.1
SAO
SAO 190609 DelFlag RA1950 PmRA1950 0.0039
DE1950 PmDE1950 -0.009 Vmag 9.2 SpType G0
Double code Source 24 CatNum 14233 DM CD-2715611
DMcomp A BDsup HD 206931 M HD 1
GC RA1950rad 5.68591755 DE1950rad -0.47016996 PmRA2000 0.0038
PmDE2000 -0.012
 
 
21460-2642 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 214559.56-264226.5 Mag 10.09 Spectral class G0 (yellow)
PmRA 18.00 PmDE 6.0 Tycho2 6948-00789-1 Calc delta mag 0.06
Calc coord yes
Tycho2
Tycho2 6948-00789-1 Pflag RAmdeg 326.49825471 DEmdeg -26.70742427
PmRA 19.6 PmDE 5.6 E RAmdeg 21 E DEmdeg 25
E pmRA 2.1 E pmDE 2.0 EpRAm 1989.09 EpDEm 1987.18
Num 6 Q RAmdeg 0.9 Q DEmdeg 0.8 Q pmRA 1.0
Q pmDE 0.8 BTmag 10.767 E BTmag 0.045 VTmag 10.089
E VTmag 0.036 Prox 205 TYC T HIP
CCDM RAdeg 326.49820472 DEdeg -26.70743694 EpRA 1990 1.70
EpDE 1990 1.55 E RAdeg 22.2 E DEdeg 27.5 Posflg
Corr -0.1