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Doubles in session


Current system
20310+3656
AC 18 AB
44 Cyg


Nearby doubles
4' : 20311+3652
SEI1148

5' : 20313+3654
TOB 188

23' : 20301+3636
KPP4204AB

26' : 20327+3711
SEI1158AB

28' : 20288+3650
SEI1129

33' : 20289+3634
SEI1132

35' : 20323+3726
SEI1156

38' : 20308+3619
TDS1078

38' : 20324+3622
KPP3359

39' : 20288+3628
COU1958

41' : 20297+3733
ES 2509

41' : 20293+3731
WEI 35AB

46' : 20328+3736
TDT2355

50' : 20344+3725
SEI1171

53' : 20308+3749
SEI1146AB

55' : 20340+3737
SEI1170

57' : 20351+3725
SEI1179

58' : 20304+3753
TDT2328

60' : 20262+3712
HO 130

60' : 20321+3558
COU2133AB

62' : 20358+3635
ES 2510

65' : 20263+3728
AG 255

66' : 20322+3552
GRV 350

66' : 20277+3605
ES 2193AB

66' : 20257+3709
ES 2192

66' : 20364+3652
ES 247



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.

20310+3656 AC 18 AB (44 Cyg)

 
 
20h 30m 59.23s +36° 56' 09.1" P.A. 158.00 sep 2.2 mag 6.32,10.12 Sp F5Iab dist. 1041.67 pc (3397.93 l.y.)
 
 
Coord 2000 20310+3656 Discov num AC   18 Comp AB Coord arcsec 2000 20 30 59.23 +36 56 09.1
Date first 1859 Date last 1991 Obs 18
Pa first 155 Pa last 157.8 P.A. Now (θ) 157.8°
Sep first 2.5 Sep last 2.16 Sep. Now (ρ) 2.16"
Mag pri 6.32 Mag sec 10.12 delta mag (ΔM) 3.8 Spectral class F5Iab (yellow-white)
Pri motion ra -001 Sec motion ra +000
Pri motion dec -002 Sec motion dec -004
Notes N (See Notes)
rPM=0.559
Nature of this double is uncertain.
 
 
20310+3656 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 44 Cyg 70135 20 30 59 +36 56 09 AC 18 AB 1991 18 158 2.2 6.32 10.12 3.80 <===
Show 70135 20 30 59 +36 56 09 KUI 98 AC 2015 6 76 16.8 6.32 12.80 6.48
Show 70135 20 30 59 +36 56 09 AC 18 AD 2015 4 165 63.1 6.32 12.30 5.98
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 44 Cyg Constellation Cygnus SAO 70135 HIP 101214
Tycho2 2697-01634-1 Gaia DR2 2057760376738256384 HD 195593 HR 7847
GC 28551 ADS 13949 BD BD+36 4105 Flamsteed 44 Cygni
Flamsteed name 44 Cyg Distance 1041.67 Distance ly 3397.93
 
 
WDS 20310+3656 AC 18 AB (44 Cyg) : NOTES
 
 
discov_num notes refcode
AC 18 44 Cyg.
 
 
REFERENCES
 
 
refcode metd author reference
AC_1857 Ma - Clark, Alvan 1857MNRAS..17..257C
AC_1857 MNRAS 17, 257, 1857
AC_1859 Ma - Clark, Alvan 1859MNRAS..20...55C
AC_1859 MNRAS 20, 55, 1859
AC_1864 Ma j Clark, Alvan ...................
AC_1864 Harvard Observatory Log, scan by Jay Holberg. ...................
Kui1929 Pa - Kuiper, G.P., Schilt, van den Bos, W., and van Gent 1929BAN.....5...49K
Kui1929 +Po BAN 5, 49, 1929
Kui1930 orb - Kuiper, G.P. 1930BAN.....5..231K
Kui1930 BAN 5, 231, 1930
Kui1933 Ma - Kuiper, G.P. 1933BAN.....7..129K
Kui1933 BAN 7, 129, 1933
Kui1934a Ma - Kuiper, G.P. 1934PASP...46..188K
Kui1934a PASP 46, 188, 1934
Kui1934b Ma - Kuiper, G.P. 1934PASP...46..285K
Kui1934b PASP 46, 285, 1934
Kui1934c Ma - Kuiper, G.P. 1934PASP...46..286K
Kui1934c PASP 46, 286, 1934
Kui1934d Ma - Kuiper, G.P. 1934PASP...46..359K
Kui1934d PASP 46, 359, 1934
Kui1934e Ma j Kuiper, G.P. 1934PASP...46..360K
Kui1934e PASP 46, 360, 1934
Kui1934f Ma - Kuiper, G.P. 1934PASP...46..361K
Kui1934f PASP 46, 361, 1934
Kui1935a Ma - Kuiper, G.P. 1935PASP...47..230K
Kui1935a PASP 47, 230, 1935
Kui1935b Ma - Kuiper, G.P. 1935PASP...47..267K
Kui1935b PASP 47, 267, 1935
Kui1935c Ma - Kuiper, G.P. 1935PASP...47..279K
Kui1935c PASP 47, 279, 1935
Kui1935d Z - Kuiper, G.P. 1935PASP...47...15K
Kui1935d PASP 47, 15, 1935
Kui1935d (no dates given for measures; default date = decade of publication added.)
Kui1935e - Kuiper, G.P. 1935PASP...47..121K
Kui1935e PASP 47, 121, 1935
Kui1936a Ma - Kuiper, G.P. 1936ApJ....84..359K
Kui1936a ApJ 84, 359, 1936
Kui1936b Ma j Kuiper, G.P. 1936PASP...48...19K
Kui1936b PASP 48, 19, 1936
Kui1936c Ma - Kuiper, G.P. 1936PASP...48..221K
Kui1936c PASP 48, 221, 1936
Kui1936d Ma - Kuiper, G.P. 1936ApJ....84..478K
Kui1936d ApJ 84, 478, 1936
Kui1937a Ma - Kuiper, G.P. 1937ApJ....85..255K
Kui1937a ApJ 85, 255, 1937
Kui1937b orb - Kuiper, G.P. 1937ApJ....86..166K
Kui1937b ApJ 86, 166, 1937
Kui1937c Ma - Kuiper, G.P. 1937PASP...49..340K
Kui1937c PASP 49, 340, 1937
Kui1938 Ma - Kuiper, G.P. 1938HarAC.450....0K
Kui1938 Harvard Announcement Card #450, 1938
Kui1939 Po - Kuiper, G.P. 1939ApJ....89..548K
Kui1939 ApJ 89, 548, 1939
Kui1940 Po - Kuiper, G.P. 1940ApJ....91..269K
Kui1940 ApJ 91, 269, 1940
Kui1942 Pa - Kuiper, G.P. 1942ApJ....96..315K
Kui1942 ApJ 96, 315, 1942
Kui1943 Mb - Kuiper, G.P. 1943ApJ....97..275K
Kui1943 ApJ 97, 275, 1943
Kui1948 Mb - Kuiper, G.P. 1948ApJ...108..542K
Kui1948 ApJ 108, 542, 1948
Kui1950 Xg - Kuiper, G.P. 1950JO.....33....1K
Kui1950 J. Obs. 33, 1, 1950
Kui1950 (Visual estimates from objective gratings used with several refractors, as cited
Kui1950 by P. Baize. No dates given for measures; default = decade of publication added.)
Kui1961a Ma - Kuiper, G.P. 1961JO.....35...36K
Kui1961a J. Obs. 35, 36, 1961
Kui1961b Ma j Kuiper, G.P. 1961ApJS....6....1K
Kui1961b ApJS 6, 1, 1961
Kui9999 - Kuiper, G.P. ...................
Kui9999 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
20310+3656 AC 18 AB 1991 18 158 2.2 6.32 10.12 F5Iab N D 203059.23+365609.1

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

 
 
WDS 20310+3656 AC 18 AB (44 Cyg) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20310+3656 AC 18 AB (44 Cyg) : MEASURES
 
 
No records found.

 
 
WDS 20310+3656 (44 Cyg) : VIRTUAL EYEPIECE
 
 

20310+3656 AC 18A mag 6.32 Sp F5Iab 20310+3656 AC 18B sep 2.1 P.A. 161.90 mag 10.12 20310+3656 KUI 98C sep 13.7 P.A. 72.10 mag 12.8 20310+3656 AC 18D sep 62.3 P.A. 168.00 mag 12.3 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 20310+3656 (44 Cyg) : ALADIN DSS IMAGE @ 20h 30m 59.23s +36° 56' 09.1"
 
 
 
 
WDS 20310+3656 AC 18 AB (44 Cyg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20310+3656 AC 18AB distance=0' 20311+3652 SEI1148 distance=4' 20313+3654 TOB 188 distance=5' 20301+3636 KPP4204AB distance=23' 20301+3636 SKF2852AC distance=23' 20301+3636 SKF2852BC distance=23' 20327+3711 SEI1158AB distance=26' 20327+3711 TDT2352Aa,Ab distance=26' 20288+3650 SEI1129 distance=28' 20289+3634 SEI1132 distance=33' 20323+3726 SEI1156 distance=35' 20308+3619 TDS1078 distance=38' 20324+3622 KPP3359 distance=38' 20288+3628 COU1958 distance=39' 20293+3731 WEI 35CD distance=40' 20297+3733 ES 2509 distance=41' 20293+3731 WEI 35BC distance=41' 20293+3731 WEI 35AB distance=41' 20293+3731 WEI 35AC distance=41' 20328+3736 TDT2355 distance=46' 20344+3725 SEI1171 distance=50' 20308+3749 SEI1146AB distance=53' 20308+3749 SEI1147AC distance=53' 20340+3737 SEI1170 distance=55' 20351+3725 SEI1179 distance=57' 20304+3753 TDT2328 distance=58' 20262+3712 HO 130 distance=60' 20321+3558 COU2133AB distance=60' 20321+3558 COU2133Aa,Ab distance=60' 20358+3635 ES 2510 distance=62' 20263+3728 AG 255 distance=65' 20322+3552 GRV 350 distance=66' 20277+3605 ES 2193AB distance=66' 20277+3605 ES 2193AC distance=66' 20277+3605 ES 2193AD distance=66' 20257+3709 ES 2192 distance=66' 20364+3652 ES 247 distance=66' 20255+3708 DAM1041 distance=67' 20359+3729 SEI1186 distance=68' 20259+3727 SEI1121 distance=69' 20291+3550 HO 594AB distance=71' 20291+3550 GRF 16AC distance=71' 20359+3617 TDT2405 distance=71' 20368+3642 TDT2420 distance=71' 20315+3806 SEI1151 distance=72' 20369+3652 SEI1192 distance=72' 20257+3731 LDS1042 distance=73' 20359+3615 GII 52Aa,Ab distance=73' 20359+3615 GII 52AB distance=73' 20297+3808 STF2691 distance=73' 20362+3737 SEI1188AB distance=75' 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 20310+3656 AC 18 AB 158 2.2
Show 20310+3656 KUI 98 AC 76 16.8
Show 20310+3656 AC 18 AD 165 63.1
Show 20311+3652 SEI1148 281 24.5 4
Show 20313+3654 TOB 188 262 17.0 5
Show 20301+3636 KPP4204 AB 213 7.1 23
Show 20301+3636 SKF2852 AC 206 6.5 23
Show 20301+3636 SKF2852 BC 83 1.0 23
Show 20327+3711 SEI1158 AB 109 20.9 26
Show 20327+3711 TDT2352 Aa,Ab 160 0.4 26
Show 20288+3650 SEI1129 23 29.0 28
Show 20289+3634 SEI1132 226 15.1 33
Show 20323+3726 SEI1156 89 5.9 35
Show 20308+3619 TDS1078 294 1.2 38
Show 20324+3622 KPP3359 201 8.7 38
Show 20288+3628 COU1958 105 0.5 39
Show 20293+3731 WEI 35 CD 202 12.1 40
Show 20297+3733 ES 2509 241 3.3 41
Show 20293+3731 WEI 35 BC 98 89.3 41
Show 20293+3731 WEI 35 AB 214 4.2 41
Show 20293+3731 WEI 35 AC 100 87.6 41
Show 20328+3736 TDT2355 57 2.3 46
Show 20344+3725 SEI1171 201 17.4 50
Show 20308+3749 SEI1146 AB 42 10.2 53
Show 20308+3749 SEI1147 AC 286 14.5 53
Show 20340+3737 SEI1170 28 17.3 55
Show 20351+3725 SEI1179 69 27.3 57
Show 20304+3753 TDT2328 45 0.5 58
Show 20262+3712 HO 130 289 1.9 60
Show 20321+3558 COU2133 AB 29 2.4 60
Show 20321+3558 COU2133 Aa,Ab 119 0.1 60
Show 20358+3635 ES 2510 317 6.8 62
Show 20263+3728 AG 255 287 5.2 65
Show 20322+3552 GRV 350 159 36.5 66
Show 20277+3605 ES 2193 AB 334 4.9 66
Show 20277+3605 ES 2193 AC 231 7.4 66
Show 20277+3605 ES 2193 AD 33 12.7 66
Show 20257+3709 ES 2192 79 2.8 66
Show 20364+3652 ES 247 147 5.4 66
Show 20255+3708 DAM1041 256 2.8 67
Show 20359+3729 SEI1186 189 12.3 68
Show 20259+3727 SEI1121 207 28.1 69
Show 20291+3550 HO 594 AB 212 15.9 71
Show 20291+3550 GRF 16 AC 163 104.0 71
Show 20359+3617 TDT2405 355 1.1 71
Show 20368+3642 TDT2420 356 0.5 71
Show 20315+3806 SEI1151 215 25.1 72
Show 20369+3652 SEI1192 281 30.5 72
Show 20257+3731 LDS1042 174 8.6 73
Show 20359+3615 GII 52 Aa,Ab 217 0.4 73
Show 20359+3615 GII 52 AB 344 3.9 73

 
 
WDS 20310+3656 : COMPONENTS
 
 
  A B C
B pa=161.9°
sep=2.10"
 
C pa=72.1°
sep=13.66"
pa=63.3°
sep=13.82"
 
D pa=168.0°
sep=62.33"
pa=168.2°
sep=60.24"
pa=180.0°
sep=65.17"
 
 
20310+3656 A
 
 
Name 44 Cyg Coord arcsec 2000 203059.23+365609.1 Mag 6.32 Spectral class F5Iab (yellow-white)
PmRA -1.00 PmDE -2.0 SAO 70135 HIP 101214
Tycho2 2697-01634-1 HD 195593 HR 7847 GC 28551
BD BD+36 4105 Flamsteed 44 Cygni Flamsteed name 44 Cyg
Tycho2
Tycho2 2697-01634-1 Pflag RAmdeg 307.74678820 DEmdeg 36.93584255
PmRA -1.3 PmDE -1.9 E RAmdeg 4 E DEmdeg 4
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.52 EpDEm 1991.63
Num 5 Q RAmdeg 1.5 Q DEmdeg 1.0 Q pmRA 1.4
Q pmDE 1.1 BTmag 7.403 E BTmag 0.015 VTmag 6.321
E VTmag 0.010 Prox 22 TYC T HIP 101214
CCDM A RAdeg 307.74679194 DEdeg 36.93584694 EpRA 1990 1.60
EpDE 1990 1.71 E RAdeg 3.8 E DEdeg 3.6 Posflg P
Corr 0.2
SAO
SAO 70135 DelFlag RA1950 PmRA1950 0
DE1950 PmDE1950 -0.002 Vmag 6.3 SpType F8p
Double code Source 70 CatNum 28551 DM BD+36 4105
DMcomp BDsup HD 195593 M HD 0
GC 28551 RA1950rad 5.36289926 DE1950rad 0.64169487 PmRA2000 0.0002
PmDE2000 -0.004
Hipparcos
Catalog H HIP 101214 Proxy H RAhms 20 30 59.23
DEdms +36 56 09.1 Vmag 6.21 VarFlag R Vmag G
RAdeg 307.747 DEdeg 36.9358 AstroRef A Plx 2.06
CCDM 20310+3656 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 158 Rho 2.172 HD 195593 BD BD+36 4105
CD CP Dm number +36 4105 VIred 1.2
SpType F5Iab R SpType Coord arcsec 2000 203059.23+365609.1
Hipparcos 2
HIP 101214 Sn 15 So 3 Nc 2
RArad 5.3711947422 DErad 0.6446521868 Plx 0.96 PmRA 0.31
PmDE -4.44 E RArad 0.26 E DErad 0.29 E Plx 0.38
E pmRA 0.29 E pmDE 0.31 Hpmag 6.3529 E Hpmag 0.0009
SHp 0.009 VA 0 BV 0.969 E BV 0.006
VI 1.2
CCDM
Ccdm 20310+3656 RComp Comp A Note1
Note2 Discov num DRAs -0.79 DDEs 8.6
R dRAs 10 Year Theta Rho
Obs 4 Vmag 6.3 Sp F8 PmNote *
PmRA -6 PmDE -11 Dm number +36 4105 Cat1 BD
Name2 +36 2033 Cat2 AGK2/3 HD 195593 M HD
ADS BDS A13949 M ADS BDS N IDS IDS 20272N3636A
HIC 101214
 
 
20310+3656 B
 
 
Coord arcsec 2000 203059.28+365607.1 Mag 10.12 PmRA 0.00 PmDE -4.0
Calc delta mag 3.8 Calc coord yes
CCDM
Ccdm 20310+3656 RComp Comp B Note1
Note2 Discov num AC 18 DRAs DDEs
R dRAs Year 1958 Theta 159 Rho 2.0
Obs 11 Vmag 11.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13949 M ADS BDS N IDS IDS 20272N3636B
HIC 101214
 
 
20310+3656 C
 
 
Coord arcsec 2000 203100.31+365613.3 Mag 12.8 Calc delta mag 6.48 Calc coord yes
CCDM
Ccdm 20310+3656 RComp Comp C Note1
Note2 Discov num KUI 98 DRAs DDEs
R dRAs Year 1935 Theta 076 Rho 16.5
Obs 2 Vmag 12.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13949 M ADS BDS N IDS IDS 20272N3636C
HIC
 
 
20310+3656 D
 
 
Coord arcsec 2000 203100.31+365508.1 Mag 12.3 PmRA 0.00 PmDE -2.0
Calc delta mag 5.98 Calc coord yes
CCDM
Ccdm 20310+3656 RComp Comp D Note1
Note2 Discov num AC 18 DRAs DDEs
R dRAs Year 1913 Theta 166 Rho 63.0
Obs 1 Vmag 12.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13949 M ADS BDS N IDS IDS 20272N3636D
HIC