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Doubles in session


Current system
20387+4830
HJ 1558


Nearby doubles
11' : 20396+4823
RAO 616

19' : 20397+4806
ES 806AB

23' : 20409+4828
ES 808

25' : 20383+4804
ES 89AB

26' : 20389+4803
CNT 7

33' : 20405+4855
ES 807

33' : 20379+4757
STF2707AB

37' : 20406+4900
ES 509

39' : 20348+4830
ES 666

40' : 20414+4758
ES 809AB

48' : 20389+4741
A 746

51' : 20361+4745
HJ 1549

53' : 20341+4804
YSC 116

56' : 20397+4734
A 747AB

61' : 20425+4916
ARG 39AB

61' : 20441+4856
HEI 912

65' : 20334+4752
J 4

68' : 20418+4929
HEI 910

68' : 20454+4816
UC 254

69' : 20397+4721
A 748

72' : 20438+4921
HEI 911

72' : 20434+4923
STJ 111

76' : 20437+4733
A 749

79' : 20379+4710
TDT2436

86' : 20313+4913
S 756

88' : 20336+4719
ES 665



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.

20387+4830 HJ 1558

 
 
20h 38m 41.59s +48° 28' 32.2" P.A. 205.00 sep 4.4 mag 9.38,11.40
 
 
Coord 2000 20387+4830 Discov num HJ 1558 Comp Coord arcsec 2000 20 38 41.59 +48 28 32.2
Date first 1828 Date last 2015 Obs 5
Pa first 201 Pa last 204.9 P.A. Now (θ) 204.9°
Sep first 5.0 Sep last 4.357 Sep. Now (ρ) 4.357"
Mag pri 9.38 Mag sec 11.40 delta mag (ΔM) 2.02 Spectral class
Pri motion ra -002 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3578-01874-1 Gaia DR2 2167755515682692864
 
 
WDS 20387+4830 HJ 1558 : 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
20387+4830 HJ 1558 2000 2 205 4.3 9.38 11.40 D 203841.59+482832.2
20387+4830 HJ 1558 2003 4 205 4.4 9.38 11.40 D 203841.59+482832.2
20387+4830 HJ 1558 2015 5 205 4.4 9.38 11.40 203841.59+482832.2

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

 
 
WDS 20387+4830 HJ 1558 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20387+4830 HJ 1558 : MEASURES
 
 
No records found.

 
 
WDS 20387+4830 : VIRTUAL EYEPIECE
 
 

20387+4830 HJ 1558A mag 9.38 20387+4830 HJ 1558B sep 4.1 P.A. 197.10 mag 11.4 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 20387+4830 : ALADIN DSS IMAGE @ 20h 38m 41.59s +48° 28' 32.2"
 
 
 
 
WDS 20387+4830 HJ 1558 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20387+4830 HJ 1558 distance=0' 20396+4823 RAO 616 distance=11' 20397+4806 ES 806AB distance=19' 20397+4806 ES 806AC distance=19' 20409+4828 ES 808 distance=23' 20383+4804 ES 89AB distance=25' 20389+4803 CNT 7 distance=26' 20405+4855 ES 807 distance=33' 20379+4757 GUI 33BC distance=33' 20379+4757 STF2707AB distance=33' 20379+4757 STF2707AC distance=33' 20379+4757 ES 2697AD distance=33' 20379+4757 HDS2944Ca,Cb distance=34' 20406+4900 ES 509 distance=37' 20348+4830 ES 666 distance=39' 20414+4758 ES 809AB distance=40' 20414+4758 SKF2394AC distance=40' 20389+4741 A 746 distance=48' 20361+4745 HJ 1549 distance=51' 20341+4804 YSC 116 distance=53' 20397+4734 A 747AB distance=56' 20397+4734 ES 90AB,C distance=56' 20425+4916 ARG 39BC distance=61' 20425+4916 ARG 39BD distance=61' 20425+4916 ARG 39BE distance=61' 20425+4916 ARG 39AB distance=61' 20425+4916 ARG 39AF distance=61' 20425+4916 ARG 39AG distance=61' 20441+4856 HEI 912 distance=61' 20334+4752 J 4 distance=65' 20418+4929 HEI 910 distance=68' 20454+4816 UC 254 distance=68' 20397+4721 A 748 distance=69' 20438+4921 HEI 911 distance=72' 20434+4923 STJ 111 distance=72' 20437+4733 A 749 distance=76' 20379+4710 TDT2436 distance=79' 20313+4913 S 756 distance=86' 20336+4719 ES 665 distance=88' 20470+4901 HDS2962 distance=89' 20309+4913 S 755AB distance=89' 20309+4913 ES 2695AC distance=89' 20301+4857 BU 669AB distance=91' 20301+4857 BU 669AC distance=91' 20301+4857 GUI 32AD distance=91' 20434+4712 TDT2496 distance=91' 20443+4716 TDT2509 distance=93' 20318+4933 BU 1136 distance=94' 20450+4718 BRT2274 distance=96' 20478+4754 ES 2253 distance=96' 20347+4957 ES 2696 distance=97' 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 20387+4830 HJ 1558 205 4.4
Show 20396+4823 RAO 616 122 1.8 11
Show 20397+4806 ES 806 AB 267 7.0 19
Show 20397+4806 ES 806 AC 24 11.9 19
Show 20409+4828 ES 808 157 3.3 23
Show 20383+4804 ES 89 AB 209 21.5 25
Show 20389+4803 CNT 7 82 3.5 26
Show 20405+4855 ES 807 154 3.9 33
Show 20379+4757 GUI 33 BC 199 76.6 33
Show 20379+4757 STF2707 AB 29 21.8 33
Show 20379+4757 STF2707 AC 195 55.3 33
Show 20379+4757 ES 2697 AD 192 17.5 33
Show 20379+4757 HDS2944 Ca,Cb 29 0.4 34
Show 20406+4900 ES 509 285 8.6 37
Show 20348+4830 ES 666 317 3.0 39
Show 20414+4758 ES 809 AB 285 1.6 40
Show 20414+4758 SKF2394 AC 68 3.0 40
Show 20389+4741 A 746 150 2.0 48
Show 20361+4745 HJ 1549 55 5.5 51
Show 20341+4804 YSC 116 270 0.2 53
Show 20397+4734 A 747 AB 104 0.3 56
Show 20397+4734 ES 90 AB,C 141 7.1 56
Show 20425+4916 ARG 39 BC 100 35.4 61
Show 20425+4916 ARG 39 BD 241 21.1 61
Show 20425+4916 ARG 39 BE 55 44.1 61
Show 20425+4916 ARG 39 AB 184 15.4 61
Show 20425+4916 ARG 39 AF 258 34.4 61
Show 20425+4916 ARG 39 AG 341 52.4 61
Show 20441+4856 HEI 912 201 1.7 61
Show 20334+4752 J 4 1 2.6 65
Show 20418+4929 HEI 910 201 1.6 68
Show 20454+4816 UC 254 181 17.9 68
Show 20397+4721 A 748 27 1.4 69
Show 20438+4921 HEI 911 125 2.4 72
Show 20434+4923 STJ 111 64 0.9 72
Show 20437+4733 A 749 306 0.5 76
Show 20379+4710 TDT2436 82 0.6 79
Show 20313+4913 S 756 327 60.7 86
Show 20336+4719 ES 665 129 5.7 88
Show 20470+4901 HDS2962 222 0.1 89
Show 20309+4913 S 755 AB 278 59.9 89
Show 20309+4913 ES 2695 AC 118 20.2 89
Show 20301+4857 BU 669 AB 336 15.0 91
Show 20301+4857 BU 669 AC 89 55.8 91
Show 20301+4857 GUI 32 AD 44 131.1 91
Show 20434+4712 TDT2496 49 1.7 91
Show 20443+4716 TDT2509 180 1.4 93
Show 20318+4933 BU 1136 215 0.7 94
Show 20450+4718 BRT2274 41 4.9 96
Show 20478+4754 ES 2253 335 3.4 96
Show 20347+4957 ES 2696 147 12.2 97

 
 
WDS 20387+4830 : COMPONENTS
 
 
  A
B pa=197.1°
sep=4.13"
 
 
20387+4830 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 203841.59+482832.2 Mag 9.38 PmRA -2.00
PmDE 1.0 Tycho2 3578-01874-1
Tycho2
Tycho2 3578-01874-1 Pflag RAmdeg 309.67330094 DEmdeg 48.47563001
PmRA -0.2 PmDE 2.0 E RAmdeg 10 E DEmdeg 11
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.27 EpDEm 1991.15
Num 4 Q RAmdeg 1.3 Q DEmdeg 0.5 Q pmRA 1.3
Q pmDE 0.5 BTmag 9.603 E BTmag 0.020 VTmag 9.379
E VTmag 0.018 Prox 925 TYC T HIP
CCDM RAdeg 309.67330167 DEdeg 48.47562528 EpRA 1990 1.78
EpDE 1990 1.76 E RAdeg 9.6 E DEdeg 10.5 Posflg
Corr 0.0
 
 
20387+4830 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203841.47+482828.2 Mag 11.4 Calc delta mag 2.02
Calc coord yes