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Doubles in session


Current system
20456+4621
HDS 2955


Nearby doubles
16' : 20466+4632
KUI 101

20' : 20437+4619
HO 140

22' : 20438+4610
TDT2503

30' : 20431+4637
BRT2273

31' : 20427+4627
TDS1092

32' : 20464+4551
CVR 230

36' : 20437+4651
TDS1096

38' : 20489+4607
HJ 1581

41' : 20494+4613
ES 670

42' : 20482+4653
ES 669

47' : 20423+4549
STT 411AB

49' : 20499+4640
BU 250

49' : 20501+4635
ES 671

50' : 20473+4535
HO 280

55' : 20508+4628
BRT2276AB

56' : 20434+4712
TDT2496

56' : 20489+4537
HDS2965

57' : 20443+4716
TDT2509

57' : 20450+4718
BRT2274

61' : 20421+4532
BKO 157

62' : 20420+4532
BRT2271

62' : 20440+4521
KPP3361

67' : 20490+4525
SMA 120

68' : 20427+4521
ES 1270

68' : 20485+4519
LDS2456

68' : 20492+4525
COU2646



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

20456+4621 HDS 2955

 
 
20h 45m 35.28s +46° 21' 02.1" P.A. 289.00 sep 0.4 mag 9.25,12.42 Sp O9V dist. 1298.7 pc (4236.36 l.y.)
 
 
Coord 2000 20456+4621 Discov num HDS2955 Comp Coord arcsec 2000 20 45 35.28 +46 21 02.1
Date first 1991 Date last 2009 Obs 2
Pa first 290 Pa last 288.9 P.A. Now (θ) 288.9°
Sep first 0.4 Sep last 0.387 Sep. Now (ρ) 0.387"
Mag pri 9.25 Mag sec 12.42 delta mag (ΔM) 3.17 Spectral class O9V (blue)
Pri motion ra -002 Sec motion ra
Pri motion dec -005 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus HIP 102449 Tycho2 3574-00466-1 Gaia DR2 2166553616342929664
BD BD+45 3260 Distance 1298.7 Distance ly 4236.36
 
 
WDS 20456+4621 HDS 2955 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HDS Hipparcos Double Star (from additional DD list) ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20456+4621 HDS2955 1991 1 290 0.4 9.25 12.42 O9V D 204535.28+462102.1
20456+4621 HDS2955 2009 2 289 0.4 9.25 12.42 O9V 204535.28+462102.1

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

 
 
WDS 20456+4621 HDS 2955 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20456+4621 HDS 2955 : MEASURES
 
 
No records found.

 
 
WDS 20456+4621 : VIRTUAL EYEPIECE
 
 

20456+4621 HDS2955A mag 9.25 Sp O9V 20456+4621 HDS2955B sep 0.3 P.A. 296.40 mag 12.42 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 20456+4621 : ALADIN DSS IMAGE @ 20h 45m 35.28s +46° 21' 02.1"
 
 
 
 
WDS 20456+4621 HDS 2955 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20456+4621 HDS2955 distance=0' 20466+4632 KUI 101 distance=16' 20437+4619 HO 140 distance=20' 20438+4610 TDT2503 distance=22' 20431+4637 BRT2273 distance=30' 20427+4627 TDS1092 distance=31' 20464+4551 CVR 230 distance=32' 20437+4651 TDS1096 distance=36' 20489+4607 HJ 1581 distance=38' 20494+4613 ES 670 distance=41' 20482+4653 ES 669 distance=42' 20423+4549 WAL 132BC distance=47' 20423+4549 CTT 15BD distance=47' 20423+4549 CTT 15BE distance=47' 20423+4549 BKO 158EH distance=47' 20423+4549 BKO 158EF distance=47' 20423+4549 BKO 158EG distance=47' 20423+4549 BKO 158EI distance=47' 20423+4549 STT 411AB distance=47' 20423+4549 WAL 132AC distance=47' 20423+4549 BKO 158AF distance=47' 20499+4640 BU 250 distance=49' 20501+4635 ES 671 distance=49' 20473+4535 HO 280 distance=50' 20508+4628 BRT2276AB distance=55' 20508+4628 FYM 314AC distance=55' 20508+4628 FYM 314AD distance=55' 20434+4712 TDT2496 distance=56' 20489+4537 HDS2965 distance=56' 20443+4716 TDT2509 distance=57' 20450+4718 BRT2274 distance=57' 20421+4532 BKO 157 distance=61' 20420+4532 BRT2271 distance=62' 20440+4521 KPP3361 distance=62' 20490+4525 SMA 120 distance=67' 20427+4521 ES 1270 distance=68' 20485+4519 LDS2456 distance=68' 20492+4525 COU2646 distance=68' 20436+4514 CBL 85 distance=71' 20388+4629 BRT2268 distance=71' 20437+4733 A 749 distance=75' 20522+4653 BRT2278 distance=75' 20504+4525 LDS5912 distance=75' 20527+4607 A 750 distance=76' 20500+4521 ES 2702 distance=76' 20414+4517 H N 73 (Deneb) distance=78' 20519+4537 SMA 122 distance=80' 20528+4551 COU2647 distance=82' 20481+4738 TDT2547 distance=82' 20527+4547 TDT2597 distance=82' 20394+4530 TDS1087 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 20456+4621 HDS2955 289 0.4
Show 20466+4632 KUI 101 112 0.3 16
Show 20437+4619 HO 140 313 8.0 20
Show 20438+4610 TDT2503 68 0.5 22
Show 20431+4637 BRT2273 308 4.7 30
Show 20427+4627 TDS1092 315 0.9 31
Show 20464+4551 CVR 230 7 112.9 32
Show 20437+4651 TDS1096 147 0.9 36
Show 20489+4607 HJ 1581 170 22.4 38
Show 20494+4613 ES 670 81 6.5 41
Show 20482+4653 ES 669 28 6.8 42
Show 20423+4549 WAL 132 BC 4 40.1 47
Show 20423+4549 CTT 15 BD 178 86.6 47
Show 20423+4549 CTT 15 BE 141 87.9 47
Show 20423+4549 BKO 158 EH 340 51.6 47
Show 20423+4549 BKO 158 EF 281 24.9 47
Show 20423+4549 BKO 158 EG 221 28.7 47
Show 20423+4549 BKO 158 EI 236 39.6 47
Show 20423+4549 STT 411 AB 349 31.8 47
Show 20423+4549 WAL 132 AC 357 71.2 47
Show 20423+4549 BKO 158 AF 143 41.0 47
Show 20499+4640 BU 250 7 18.3 49
Show 20501+4635 ES 671 91 1.6 49
Show 20473+4535 HO 280 75 11.7 50
Show 20508+4628 BRT2276 AB 254 3.7 55
Show 20508+4628 FYM 314 AC 149 9.5 55
Show 20508+4628 FYM 314 AD 86 11.2 55
Show 20434+4712 TDT2496 49 1.7 56
Show 20489+4537 HDS2965 282 0.1 56
Show 20443+4716 TDT2509 180 1.4 57
Show 20450+4718 BRT2274 41 4.9 57
Show 20421+4532 BKO 157 240 8.9 61
Show 20420+4532 BRT2271 269 4.5 62
Show 20440+4521 KPP3361 134 2.2 62
Show 20490+4525 SMA 120 313 4.3 67
Show 20427+4521 ES 1270 289 5.9 68
Show 20485+4519 LDS2456 236 18.0 68
Show 20492+4525 COU2646 266 0.4 68
Show 20436+4514 CBL 85 166 17.7 71
Show 20388+4629 BRT2268 320 3.4 71
Show 20437+4733 A 749 306 0.5 75
Show 20522+4653 BRT2278 196 3.2 75
Show 20504+4525 LDS5912 252 17.4 75
Show 20527+4607 A 750 211 0.1 76
Show 20500+4521 ES 2702 348 8.6 76
Show Deneb 20414+4517 H N 73 105 75.6 78
Show 20519+4537 SMA 122 262 7.4 80
Show 20528+4551 COU2647 225 0.4 82
Show 20481+4738 TDT2547 73 2.5 82
Show 20527+4547 TDT2597 327 1.3 82
Show 20394+4530 TDS1087 141 1.0 83

 
 
WDS 20456+4621 : COMPONENTS
 
 
  A
B pa=296.4°
sep=0.28"
 
 
20456+4621 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204535.28+462102.1 Mag 9.25 Spectral class O9V (blue)
PmRA -2.00 PmDE -5.0 HIP 102449 Tycho2 3574-00466-1
BD BD+45 3260
Tycho2
Tycho2 3574-00466-1 Pflag RAmdeg 311.39699720 DEmdeg 46.35057377
PmRA -2.8 PmDE -5.3 E RAmdeg 10 E DEmdeg 10
E pmRA 1.1 E pmDE 1.1 EpRAm 1990.10 EpDEm 1990.43
Num 9 Q RAmdeg 1.3 Q DEmdeg 1.0 Q pmRA 1.2
Q pmDE 1.0 BTmag 9.660 E BTmag 0.022 VTmag 9.150
E VTmag 0.017 Prox 999 TYC T HIP 102449
CCDM AB RAdeg 311.39700611 DEdeg 46.35058528 EpRA 1990 1.65
EpDE 1990 1.72 E RAdeg 11.3 E DEdeg 10.3 Posflg P
Corr 0.1
Hipparcos
Catalog H HIP 102449 Proxy H RAhms 20 45 35.28
DEdms +46 21 02.1 Vmag 9.07 VarFlag R Vmag G
RAdeg 311.397 DEdeg 46.3506 AstroRef A Plx 0.92
CCDM 20456+4621 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual C M HIP AB
Theta 290 Rho 0.352 HD BD BD+45 3260
CD CP Dm number +45 3260 VIred 0.57
SpType O9V R SpType Coord arcsec 2000 204535.28+462102.1
Hipparcos 2
HIP 102449 Sn 15 So 3 Nc 2
RArad 5.4349030914 DErad 0.8089703577 Plx 0.77 PmRA -3.05
PmDE -4.83 E RArad 0.73 E DErad 0.68 E Plx 0.86
E pmRA 0.98 E pmDE 0.71 Hpmag 9.1891 E Hpmag 0.0015
SHp 0.017 VA 0 BV 0.5 E BV 0.014
VI 0.57
CCDM
Ccdm 20456+4621 RComp Comp A Note1
Note2 Discov num DRAs -0.72 DDEs 2.1
R dRAs 82 Year Theta Rho
Obs 2 Vmag 9.2 Sp O9 PmNote *
PmRA -2 PmDE -5 Dm number +45 3260 Cat1 BD
Name2 +46 1682 Cat2 AGK2/3 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 102449
 
 
20456+4621 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204535.26+462102.2 Mag 12.42 Calc delta mag 3.17
Calc coord yes
CCDM
Ccdm 20456+4621 RComp Comp B Note1
Note2 Discov num HDS DRAs -0.75 DDEs 2.2
R dRAs 82 Year 1991 Theta 290 Rho 0.4
Obs 1 Vmag 12.4 Sp PmNote *
PmRA -2 PmDE -5 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 102449