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Doubles in session


Current system
20338+4540
A 740


Nearby doubles
14' : 20348+4531
ES 805

20' : 20343+4520
ES 804AB

23' : 20317+4540
HJ 1533

28' : 20360+4555
STJ 103

44' : 20300+4556
LSC 91

50' : 20291+4544
BU 1135

52' : 20295+4516
ES 662

54' : 20376+4504
HJ 1555

57' : 20326+4635
ES 664

58' : 20329+4636
KRV 41

58' : 20293+4508
RAO 434

60' : 20394+4530
TDS1087

62' : 20339+4642
BU 1489AB

66' : 20304+4634
ES 663

66' : 20325+4644
GII 101

68' : 20328+4646
POP 156

69' : 20281+4509
TDS1075

71' : 20322+4648
A 736AB

72' : 20303+4439
ES 1441

72' : 20349+4651
STTA208AB

72' : 20353+4650
MZA 37AB

72' : 20388+4629
BRT2268

73' : 20270+4539
HJ 1518

73' : 20282+4458
ES 661

73' : 20277+4507
ROE 43AB

73' : 20352+4651
MZA 30AB



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20338+4540 A 740

 
 
20h 33m 50.35s +45° 39' 41.2" P.A. 313.00 sep 0.8 mag 9.64,9.95 Sp O5V
 
 
Coord 2000 20338+4540 Discov num A   740 Comp Coord arcsec 2000 20 33 50.35 +45 39 41.2
Date first 1904 Date last 2016 Obs 16
Pa first 314 Pa last 312.5 P.A. Now (θ) 312.5°
Sep first 0.8 Sep last 0.83 Sep. Now (ρ) 0.83"
Mag pri 9.64 Mag sec 9.95 delta mag (ΔM) 0.31 Spectral class O5V (blue)
Pri motion ra +000 Sec motion ra +000
Pri motion dec -007 Sec motion dec -007
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 49801 Tycho2 3573-00385-1 Gaia DR2 2071169745679972096
 
 
WDS 20338+4540 A 740 : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
20338+4540 A 740 2007 13 313 0.9 9.64 9.95 O8 +45 3216 203350.35+453941.2
20338+4540 A 740 2009 14 314 0.8 9.64 9.95 O8 +45 3216 203350.35+453941.2
20338+4540 A 740 2016 16 313 0.8 9.64 9.95 O5V +45 3216 203350.35+453941.2

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

 
 
WDS 20338+4540 A 740 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20338+4540 A 740 : MEASURES
 
 
No records found.

 
 
WDS 20338+4540 : VIRTUAL EYEPIECE
 
 

20338+4540 A 740A mag 9.64 Sp O5V 20338+4540 A 740B sep 0.8 P.A. 312.50 mag 9.95 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 20338+4540 : ALADIN DSS IMAGE @ 20h 33m 50.35s +45° 39' 41.2"
 
 
 
 
WDS 20338+4540 A 740 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20338+4540 A 740 distance=0' 20348+4531 ES 805 distance=14' 20343+4520 ES 804AB distance=20' 20343+4520 ES 804BC distance=21' 20317+4540 HJ 1533 distance=23' 20360+4555 STJ 103 distance=28' 20300+4556 LSC 91 distance=44' 20291+4544 BU 1135 distance=50' 20295+4516 ES 662 distance=52' 20376+4504 HJ 1555 distance=54' 20326+4635 ES 664 distance=57' 20329+4636 KRV 41 distance=58' 20293+4508 RAO 434 distance=58' 20394+4530 TDS1087 distance=60' 20339+4642 HDS2940Aa,Ab distance=62' 20339+4642 BU 1489AB distance=62' 20304+4634 ES 663 distance=66' 20325+4644 GII 101 distance=66' 20328+4646 POP 156 distance=68' 20281+4509 TDS1075 distance=69' 20322+4648 A 736AB distance=71' 20322+4648 DAM 636AC distance=71' 20303+4439 ES 1441 distance=72' 20349+4651 STTA208AB distance=72' 20349+4651 BKO 156AC distance=72' 20353+4650 MZA 37AB distance=72' 20353+4650 MZA 37AC distance=72' 20388+4629 BRT2268 distance=72' 20270+4539 HJ 1518 distance=73' 20282+4458 ES 661 distance=73' 20277+4507 ROE 43AB distance=73' 20277+4507 ROE 43AC distance=73' 20277+4507 ROE 43AD distance=73' 20277+4507 ROE 43AE distance=73' 20277+4507 ROE 43AF distance=73' 20277+4507 ROE 43AG distance=73' 20277+4507 BKO 154AH distance=73' 20277+4507 BKO 154AI distance=73' 20277+4507 BKO 154CJ distance=73' 20352+4651 MZA 30AB distance=73' 20352+4651 MZA 30AC distance=73' 20352+4651 MZA 30AD distance=73' 20352+4651 MZA 30AE distance=73' 20352+4651 MZA 30AF distance=73' 20277+4507 BKO 154EK distance=74' 20305+4434 ES 1442 distance=75' 20295+4437 TDT2320 distance=78' 20269+4611 BRT2263 distance=79' 20386+4438 ES 667 distance=80' 20264+4520 KPP 472 distance=81' 20328+4418 COU2645 distance=83' 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 20338+4540 A 740 313 0.8 0
Show 20348+4531 ES 805 152 7.9 14
Show 20343+4520 ES 804 AB 117 30.8 20
Show 20343+4520 ES 804 BC 128 2.2 21
Show 20317+4540 HJ 1533 187 10.9 23
Show 20360+4555 STJ 103 338 1.3 28
Show 20300+4556 LSC 91 19 0.3 44
Show 20291+4544 BU 1135 335 1.5 50
Show 20295+4516 ES 662 142 5.7 52
Show 20376+4504 HJ 1555 354 13.8 54
Show 20326+4635 ES 664 55 9.0 57
Show 20329+4636 KRV 41 172 19.6 58
Show 20293+4508 RAO 434 162 1.2 58
Show 20394+4530 TDS1087 291 2.7 60
Show 20339+4642 HDS2940 Aa,Ab 46 0.3 62
Show 20339+4642 BU 1489 AB 16 116.5 62
Show 20304+4634 ES 663 110 5.0 66
Show 20325+4644 GII 101 289 0.4 66
Show 20328+4646 POP 156 4 3.2 68
Show 20281+4509 TDS1075 358 1.4 69
Show 20322+4648 A 736 AB 350 0.6 71
Show 20322+4648 DAM 636 AC 106 17.0 71
Show 20303+4439 ES 1441 127 2.0 72
Show 20349+4651 STTA208 AB 241 83.5 72
Show 20349+4651 BKO 156 AC 98 45.9 72
Show 20353+4650 MZA 37 AB 319 6.1 72
Show 20353+4650 MZA 37 AC 319 11.1 72
Show 20388+4629 BRT2268 320 3.4 72
Show 20270+4539 HJ 1518 86 15.3 73
Show 20282+4458 ES 661 156 6.9 73
Show 20277+4507 ROE 43 AB 317 17.4 73
Show 20277+4507 ROE 43 AC 312 52.6 73
Show 20277+4507 ROE 43 AD 271 42.4 73
Show 20277+4507 ROE 43 AE 282 82.9 73
Show 20277+4507 ROE 43 AF 336 87.1 73
Show 20277+4507 ROE 43 AG 282 102.4 73
Show 20277+4507 BKO 154 AH 224 18.4 73
Show 20277+4507 BKO 154 AI 63 24.2 73
Show 20277+4507 BKO 154 CJ 331 17.9 73
Show 20352+4651 MZA 30 AB 140 22.5 73
Show 20352+4651 MZA 30 AC 115 14.2 73
Show 20352+4651 MZA 30 AD 132 23.8 73
Show 20352+4651 MZA 30 AE 123 17.4 73
Show 20352+4651 MZA 30 AF 106 12.3 73
Show 20277+4507 BKO 154 EK 109 4.7 74
Show 20305+4434 ES 1442 265 2.7 75
Show 20295+4437 TDT2320 223 0.7 78
Show 20269+4611 BRT2263 34 4.1 79
Show 20386+4438 ES 667 185 9.8 80
Show 20264+4520 KPP 472 90 4.6 81
Show 20328+4418 COU2645 290 0.1 83

 
 
WDS 20338+4540 : COMPONENTS
 
 
  A
B pa=312.5°
sep=0.83"
 
 
20338+4540 A
 
 
Coord arcsec 2000 203350.35+453941.2 Mag 9.64 Spectral class O5V (blue) PmRA 0.00
PmDE -7.0 SAO 49801 DM BD+45 3216
SAO
SAO 49801 DelFlag RA1950 PmRA1950 -0.0043
DE1950 PmDE1950 -0.026 Vmag 9 SpType
Double code Source 3 CatNum 1716 DM BD+45 3216
DMcomp BDsup HD M HD
GC RA1950rad 5.3763438 DE1950rad 0.79393263 PmRA2000 -0.004
PmDE2000 -0.029
CCDM
Ccdm 20338+4540 RComp Comp A Note1
Note2 Discov num DRAs 2.31 DDEs -18.4
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.4 Sp PmNote *
PmRA -10 PmDE 6 Dm number +45 3216 Cat1 BD
Name2 +45 1716 Cat2 AGK2/3 HD M HD
ADS BDS A14018 M ADS BDS N IDS IDS 20306N4519A
HIC
 
 
20338+4540 B
 
 
Coord arcsec 2000 203350.29+453941.8 Mag 9.95 PmRA 0.00 PmDE -7.0
Delta magnitude 0.31 Coordinate calculated yes
CCDM
Ccdm 20338+4540 RComp Comp B Note1
Note2 Discov num A 740 DRAs DDEs
R dRAs Year 1904 Theta 314 Rho 0.8
Obs 6 Vmag 10.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14018 M ADS BDS N IDS IDS 20306N4519B
HIC