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Current system
20531+4615
HJ 1591


Nearby doubles
4' : 20562+4615
A 753AB

12' : 20547+4614
YSC 163

22' : 20571+4632
TDT2653

25' : 20539+4632
ES 673

31' : 20585+4626
TDT2667

33' : 20527+4607
A 750

40' : 20528+4551
COU2647

44' : 20527+4547
TDT2597

46' : 20571+4658
TDS1108

49' : 20579+4532
ES 677

50' : 20578+4530
ES 676

53' : 20522+4653
BRT2278

54' : 20508+4628
BRT2276AB

56' : 21008+4635
BU 156

56' : 20519+4537
SMA 122

57' : 21012+4609
STT 426AB

57' : 20597+4658
ES 1166

58' : 20566+4712
HDS2982

58' : 20535+4523
HDS2975

62' : 20501+4635
ES 671

66' : 20599+4525
HEI 15

66' : 20499+4640
BU 250

66' : 20494+4613
ES 670

67' : 20555+4722
TOB 201AB

67' : 20558+4722
TOB 200

68' : 20555+4723
ES 95AB



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+4615 HJ 1591

 
 
20h 55m 47.78s +46° 15' 10.5" P.A. 134.00 sep 10.1 mag 9.80,10.90 Sp A0
 
 
Coord 2000 20531+4615 Discov num HJ 1591 Comp Coord arcsec 2000 20 55 47.78 +46 15 10.5
Date first 1828 Date last 2018 Obs 12
Pa first 124 Pa last 133.8 P.A. Now (θ) 133.8°
Sep first 4.0 Sep last 10.11 Sep. Now (ρ) 10.11"
Mag pri 9.80 Mag sec 10.90 delta mag (ΔM) 1.1 Spectral class A0 (white)
Pri motion ra +002 Sec motion ra -001
Pri motion dec +001 Sec motion dec -005
Notes
rPM=1.316
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3575-04714-1 Gaia DR2 2163722236466378496
 
 
WDS 20531+4615 HJ 1591 : 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
20531+4615 HJ 1591 1828 1 124 4.0 11.00 12.00
20531+4615 HJ 1591 2003 5 133 10.1 9.80 10.90 A0 205547.78+461510.5
20531+4615 HJ 1591 2015 7 134 10.1 9.80 10.90 A0 205547.78+461510.5
20531+4615 HJ 1591 2018 9 135 10.1 9.80 10.90 A0 205547.78+461510.5

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

 
 
WDS 20531+4615 HJ 1591 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20531+4615 HJ 1591 : MEASURES
 
 
No records found.

 
 
WDS 20531+4615 : VIRTUAL EYEPIECE
 
 

20531+4615 HJ 1591A mag 9.8 Sp A0 20531+4615 HJ 1591B sep 8.6 P.A. 144.20 mag 10.9 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+4615 : ALADIN DSS IMAGE @ 20h 55m 47.78s +46° 15' 10.5"
 
 
 
 
WDS 20531+4615 HJ 1591 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20531+4615 HJ 1591 distance=1' 20562+4615 A 753AB distance=4' 20562+4615 A 753AB,C distance=4' 20547+4614 YSC 163 distance=12' 20571+4632 TDT2653 distance=22' 20539+4632 ES 673 distance=25' 20585+4626 TDT2667 distance=31' 20527+4607 A 750 distance=33' 20528+4551 COU2647 distance=40' 20527+4547 TDT2597 distance=44' 20571+4658 TDS1108 distance=46' 20579+4532 ES 677 distance=49' 20578+4530 ES 676 distance=50' 20522+4653 BRT2278 distance=53' 20508+4628 BRT2276AB distance=54' 20508+4628 FYM 314AC distance=54' 20508+4628 FYM 314AD distance=54' 21008+4635 BU 156 distance=56' 20519+4537 SMA 122 distance=56' 21012+4609 STT 426AB distance=57' 21012+4609 CIA 21Aa,Ab distance=57' 20597+4658 ES 1166 distance=57' 20566+4712 HDS2982 distance=58' 20535+4523 HDS2975 distance=58' 20501+4635 ES 671 distance=62' 20599+4525 HEI 15 distance=66' 20499+4640 BU 250 distance=66' 20494+4613 ES 670 distance=66' 20555+4722 TOB 201CD distance=67' 20555+4722 TOB 201AB distance=67' 20555+4722 TOB 201AC distance=67' 20555+4722 TOB 201AD distance=67' 20558+4722 TOB 200 distance=67' 20555+4723 TDT2632Aa,Ab distance=68' 20555+4723 ES 95AB distance=68' 20555+4723 HJ 1597AC distance=68' 20541+4507 STT 422 distance=68' 20542+4508 LDS5915 distance=70' 21022+4641 ES 1167AB distance=72' 21022+4641 ES 1167AC distance=72' 20489+4607 HJ 1581 distance=72' 21010+4528 ES 1271 distance=72' 20514+4519 ARG 40 distance=73' 21028+4551 KUI 104CD distance=75' 21028+4551 FYM 331CF distance=75' 21028+4551 BU 1138CE distance=75' 21028+4551 HLA 30CG distance=75' 20504+4525 LDS5912 distance=76' 21028+4551 BU 1138AB distance=77' 21028+4551 BU 1138AC distance=77' 21032+4631 TDT2714 distance=79' 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+4615 HJ 1591 134 10.1 1
Show 20562+4615 A 753 AB 256 1.0 4
Show 20562+4615 A 753 AB,C 263 9.3 4
Show 20547+4614 YSC 163 101 0.7 12
Show 20571+4632 TDT2653 301 2.3 22
Show 20539+4632 ES 673 76 5.2 25
Show 20585+4626 TDT2667 17 1.1 31
Show 20527+4607 A 750 211 0.1 33
Show 20528+4551 COU2647 225 0.4 40
Show 20527+4547 TDT2597 327 1.3 44
Show 20571+4658 TDS1108 96 1.0 46
Show 20579+4532 ES 677 160 5.8 49
Show 20578+4530 ES 676 293 7.6 50
Show 20522+4653 BRT2278 196 3.2 53
Show 20508+4628 BRT2276 AB 254 3.7 54
Show 20508+4628 FYM 314 AC 149 9.5 54
Show 20508+4628 FYM 314 AD 86 11.2 54
Show 21008+4635 BU 156 235 0.9 56
Show 20519+4537 SMA 122 262 7.4 56
Show 21012+4609 STT 426 AB 159 2.9 57
Show 21012+4609 CIA 21 Aa,Ab 30 0.0 57
Show 20597+4658 ES 1166 114 1.6 57
Show 20566+4712 HDS2982 161 0.1 58
Show 20535+4523 HDS2975 191 0.2 58
Show 20501+4635 ES 671 91 1.6 62
Show 20599+4525 HEI 15 321 0.9 66
Show 20499+4640 BU 250 7 18.3 66
Show 20494+4613 ES 670 81 6.5 66
Show 20555+4722 TOB 201 CD 71 10.3 67
Show 20555+4722 TOB 201 AB 82 20.0 67
Show 20555+4722 TOB 201 AC 146 13.4 67
Show 20555+4722 TOB 201 AD 114 18.9 67
Show 20558+4722 TOB 200 91 11.5 67
Show 20555+4723 TDT2632 Aa,Ab 169 0.6 68
Show 20555+4723 ES 95 AB 268 6.5 68
Show 20555+4723 HJ 1597 AC 127 13.6 68
Show 20541+4507 STT 422 332 2.6 68
Show 20542+4508 LDS5915 43 18.0 70
Show 21022+4641 ES 1167 AB 226 5.2 72
Show 21022+4641 ES 1167 AC 73 18.8 72
Show 20489+4607 HJ 1581 170 22.4 72
Show 21010+4528 ES 1271 26 3.1 72
Show 20514+4519 ARG 40 250 9.2 73
Show 21028+4551 KUI 104 CD 85 2.7 75
Show 21028+4551 FYM 331 CF 39 11.9 75
Show 21028+4551 BU 1138 CE 249 23.6 75
Show 21028+4551 HLA 30 CG 148 7.3 75
Show 20504+4525 LDS5912 252 17.4 76
Show 21028+4551 BU 1138 AB 172 0.1 77
Show 21028+4551 BU 1138 AC 330 152.1 77
Show 21032+4631 TDT2714 22 0.5 79

 
 
WDS 20531+4615 : COMPONENTS
 
 
  A
B pa=144.2°
sep=8.63"
 
 
20531+4615 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 205547.78+461510.5 Mag 9.8 Spectral class A0 (white)
PmRA 2.00 PmDE 1.0 Tycho2 3575-04714-1
Tycho2
Tycho2 3575-04714-1 Pflag RAmdeg 313.94906881 DEmdeg 46.25305997
PmRA 2.0 PmDE 1.1 E RAmdeg 18 E DEmdeg 15
E pmRA 1.4 E pmDE 1.4 EpRAm 1989.92 EpDEm 1990.54
Num 3 Q RAmdeg 1.7 Q DEmdeg 1.1 Q pmRA 1.6
Q pmDE 1.1 BTmag 10.026 E BTmag 0.026 VTmag 9.917
E VTmag 0.030 Prox 982 TYC T HIP
CCDM RAdeg 313.94906194 DEdeg 46.25305722 EpRA 1990 1.66
EpDE 1990 1.78 E RAdeg 17.6 E DEdeg 15.2 Posflg
Corr 0.1
 
 
20531+4615 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205548.27+461503.5 Mag 10.9 PmRA -1.00
PmDE -5.0 Calc delta mag 1.1 Calc coord yes