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Current system
20423+4549
CTT 15 BD


Nearby doubles
18' : 20421+4532
BKO 157

19' : 20420+4532
BRT2271

26' : 20438+4610
TDT2503

30' : 20427+4521
ES 1270

33' : 20437+4619
HO 140

34' : 20440+4521
KPP3361

35' : 20414+4517
H N 73
Deneb

37' : 20394+4530
TDS1087

38' : 20427+4627
TDS1092

39' : 20436+4514
CBL 85

43' : 20464+4551
CVR 230

47' : 20456+4621
HDS2955

49' : 20431+4637
BRT2273

51' : 20434+4501
ES 668AB

53' : 20432+4458
BKO 159

54' : 20388+4629
BRT2268

55' : 20473+4535
HO 280

55' : 20433+4456
ES 2699

62' : 20466+4632
KUI 101

63' : 20437+4651
TDS1096

67' : 20360+4555
STJ 103

68' : 20376+4504
HJ 1555

69' : 20485+4519
LDS2456

70' : 20461+4452
ES 30

71' : 20489+4537
HDS2965

71' : 20489+4607
HJ 1581



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.

20423+4549 CTT 15 BD

 
 
20h 42m 19.66s +45° 49' 53.1" P.A. 178.00 sep 86.6 mag 10.58,10.60
 
 
Coord 2000 20423+4549 Discov num CTT  15 Comp BD Coord arcsec 2000 20 42 19.66 +45 49 53.1
Date first 1892 Date last 2015 Obs 13
Pa first 179 Pa last 178.1 P.A. Now (θ) 178.1°
Sep first 88.5 Sep last 86.633 Sep. Now (ρ) 86.633"
Mag pri 10.58 Mag sec 10.60 delta mag (ΔM) 0.02 Spectral class
Pri motion ra -001 Sec motion ra +004
Pri motion dec -009 Sec motion dec +007
Notes N (See Notes)
rPM=1.851
This double is not physical.
 
 
20423+4549 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 197488 49960 20 42 20 +45 49 24 STT 411 AB 2015 50 349 31.8 7.66 10.58 2.92
Show 49960 20 42 20 +45 49 24 WAL 132 AC 2015 16 357 71.2 7.66 10.23 2.57
Show 49960 20 42 20 +45 49 24 BKO 158 AF 2015 11 143 41.0 7.66 12.20 4.54
Show 20 42 20 +45 49 53 WAL 132 BC 2015 15 4 40.1 10.58 10.23 0.35
Show 20 42 20 +45 49 53 CTT 15 BD 2015 13 178 86.6 10.58 10.60 0.02 <===
Show 20 42 20 +45 49 53 CTT 15 BE 2015 12 141 87.9 10.58 10.55 0.03
Show 20 42 25 +45 48 44 BKO 158 EF 2015 9 281 24.9 10.55 12.20 1.65
Show 20 42 25 +45 48 44 BKO 158 EG 2015 7 221 28.7 10.55 14.00 3.45
Show 20 42 25 +45 48 44 BKO 158 EH 2015 7 340 51.6 10.55 12.60 2.05
Show 20 42 25 +45 48 44 BKO 158 EI 2014 6 236 39.6 10.55 13.60 3.05
Ninefold system
9 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3574-02542-1 Gaia DR2 2070448912720759040
 
 
WDS 20423+4549 CTT 15 BD : NOTES
 
 
discov_num notes refcode
STT 411 AB: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
 
 
REFERENCES
 
 
refcode metd author reference
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
 
 
DISCOVERER
 
 
idgroup discov author
1 BKO Ladanyi, T. & Berko, E.
32 CTT Courtot, J.-F.
77 STT Struve, O.
114 WAL Wallenquist, A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20423+4549 CTT 15 BD 2008 7 178 86.7 10.58 10.40 D 204219.66+454953.1
20423+4549 CTT 15 BD 2015 9 178 86.6 10.58 10.60 N 204219.66+454953.1

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

 
 
WDS 20423+4549 CTT 15 BD : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20423+4549 CTT 15 BD : MEASURES
 
 
No records found.

 
 
WDS 20423+4549 : VIRTUAL EYEPIECE
 
 

20423+4549 STT 411A mag 7.66 Sp G2V 20423+4549 WAL 132B sep 29.4 P.A. 346.60 mag 10.58 20423+4549 WAL 132C sep 71.2 P.A. 358.10 mag 10.23 20423+4549 CTT 15D sep 58.2 P.A. 184.70 mag 10.6 20423+4549 BKO 158E sep 62.8 P.A. 129.90 mag 10.55 20423+4549 BKO 158F sep 37.0 P.A. 152.40 mag 12.2 20423+4549 BKO 158G sep 71.3 P.A. 150.50 mag 14 20423+4549 BKO 158H sep 36.7 P.A. 77.10 mag 12.6 20423+4549 BKO 158I sep 67.2 P.A. 157.90 mag 13.6 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 20423+4549 : ALADIN DSS IMAGE @ 20h 42m 19.66s +45° 49' 53.1"
 
 
 
 
WDS 20423+4549 CTT 15 BD : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20423+4549 WAL 132BC distance=1' 20423+4549 CTT 15BD distance=1' 20423+4549 CTT 15BE distance=1' 20423+4549 STT 411AB distance=1' 20423+4549 WAL 132AC distance=1' 20423+4549 BKO 158AF distance=1' 20423+4549 BKO 158EH distance=2' 20423+4549 BKO 158EF distance=2' 20423+4549 BKO 158EG distance=2' 20423+4549 BKO 158EI distance=2' 20421+4532 BKO 157 distance=18' 20420+4532 BRT2271 distance=19' 20438+4610 TDT2503 distance=26' 20427+4521 ES 1270 distance=30' 20437+4619 HO 140 distance=33' 20440+4521 KPP3361 distance=34' 20414+4517 H N 73 (Deneb) distance=35' 20394+4530 TDS1087 distance=37' 20427+4627 TDS1092 distance=38' 20436+4514 CBL 85 distance=39' 20464+4551 CVR 230 distance=43' 20456+4621 HDS2955 distance=47' 20431+4637 BRT2273 distance=49' 20434+4501 ES 668AB distance=51' 20434+4501 ES 668AC distance=51' 20434+4501 FYM 322AD distance=51' 20432+4458 BKO 159 distance=53' 20388+4629 BRT2268 distance=54' 20473+4535 HO 280 distance=55' 20433+4456 ES 2699 distance=55' 20466+4632 KUI 101 distance=62' 20437+4651 TDS1096 distance=63' 20360+4555 STJ 103 distance=67' 20376+4504 HJ 1555 distance=68' 20485+4519 LDS2456 distance=69' 20461+4452 ES 30 distance=70' 20489+4537 HDS2965 distance=71' 20489+4607 HJ 1581 distance=71' 20459+4448 ES 2701 distance=73' 20490+4525 SMA 120 distance=75' 20492+4525 COU2646 distance=77' 20494+4613 ES 670 distance=78' 20432+4431 COU2422 distance=80' 20348+4531 ES 805 distance=82' 20386+4438 ES 667 distance=82' 20434+4712 TDT2496 distance=83' 20416+4424 COU2541 distance=86' 20500+4521 ES 2702 distance=86' 20482+4653 ES 669 distance=88' 20504+4525 LDS5912 distance=88' 20443+4716 TDT2509 distance=89' 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 20423+4549 WAL 132 BC 4 40.1 1
Show 20423+4549 CTT 15 BD 178 86.6 1
Show 20423+4549 CTT 15 BE 141 87.9 1
Show 20423+4549 STT 411 AB 349 31.8 1
Show 20423+4549 WAL 132 AC 357 71.2 1
Show 20423+4549 BKO 158 AF 143 41.0 1
Show 20423+4549 BKO 158 EH 340 51.6 2
Show 20423+4549 BKO 158 EF 281 24.9 2
Show 20423+4549 BKO 158 EG 221 28.7 2
Show 20423+4549 BKO 158 EI 236 39.6 2
Show 20421+4532 BKO 157 240 8.9 18
Show 20420+4532 BRT2271 269 4.5 19
Show 20438+4610 TDT2503 68 0.5 26
Show 20427+4521 ES 1270 289 5.9 30
Show 20437+4619 HO 140 313 8.0 33
Show 20440+4521 KPP3361 134 2.2 34
Show Deneb 20414+4517 H N 73 105 75.6 35
Show 20394+4530 TDS1087 141 1.0 37
Show 20427+4627 TDS1092 315 0.9 38
Show 20436+4514 CBL 85 166 17.7 39
Show 20464+4551 CVR 230 7 112.9 43
Show 20456+4621 HDS2955 289 0.4 47
Show 20431+4637 BRT2273 308 4.7 49
Show 20434+4501 ES 668 AB 68 5.2 51
Show 20434+4501 ES 668 AC 269 23.4 51
Show 20434+4501 FYM 322 AD 200 18.7 51
Show 20432+4458 BKO 159 37 13.2 53
Show 20388+4629 BRT2268 320 3.4 54
Show 20473+4535 HO 280 75 11.7 55
Show 20433+4456 ES 2699 296 40.1 55
Show 20466+4632 KUI 101 112 0.3 62
Show 20437+4651 TDS1096 147 0.9 63
Show 20360+4555 STJ 103 338 1.3 67
Show 20376+4504 HJ 1555 354 13.8 68
Show 20485+4519 LDS2456 236 18.0 69
Show 20461+4452 ES 30 57 17.1 70
Show 20489+4537 HDS2965 282 0.1 71
Show 20489+4607 HJ 1581 170 22.4 71
Show 20459+4448 ES 2701 81 50.9 73
Show 20490+4525 SMA 120 313 4.3 75
Show 20492+4525 COU2646 266 0.4 77
Show 20494+4613 ES 670 81 6.5 78
Show 20432+4431 COU2422 236 1.3 80
Show 20348+4531 ES 805 152 7.9 82
Show 20386+4438 ES 667 185 9.8 82
Show 20434+4712 TDT2496 49 1.7 83
Show 20416+4424 COU2541 25 0.4 86
Show 20500+4521 ES 2702 348 8.6 86
Show 20482+4653 ES 669 28 6.8 88
Show 20504+4525 LDS5912 252 17.4 88
Show 20443+4716 TDT2509 180 1.4 89

 
 
WDS 20423+4549 : COMPONENTS
 
 
  A B C D E F G H
B pa=346.6°
sep=29.40"
 
C pa=358.1°
sep=71.20"
pa=6.0°
sep=42.79"
 
D pa=184.7°
sep=58.18"
pa=178.7°
sep=86.61"
pa=181.1°
sep=129.17"
 
E pa=129.9°
sep=62.82"
pa=141.4°
sep=88.15"
pa=155.6°
sep=122.38"
pa=71.5°
sep=55.87"
 
F pa=152.4°
sep=37.00"
pa=158.7°
sep=65.89"
pa=169.4°
sep=105.75"
pa=41.1°
sep=33.42"
pa=283.6°
sep=31.94"
 
G pa=150.5°
sep=71.30"
pa=155.2°
sep=99.87"
pa=164.3°
sep=138.38"
pa=95.8°
sep=40.11"
pa=211.0°
sep=25.40"
pa=148.5°
sep=34.34"
 
H pa=77.1°
sep=36.68"
pa=115.7°
sep=47.20"
pa=148.8°
sep=73.62"
pa=31.5°
sep=77.60"
pa=345.6°
sep=50.04"
pa=24.4°
sep=44.98"
pa=0.5°
sep=70.23"
 
I pa=157.9°
sep=67.18"
pa=160.6°
sep=96.34"
pa=168.3°
sep=136.24"
pa=98.1°
sep=30.35"
pa=226.3°
sep=31.76"
pa=164.6°
sep=30.56"
pa=268.9°
sep=9.85"
pa=188.5°
sep=71.20"
 
 
20423+4549 A
 
 
Name HD 197488 Coord arcsec 2000 204220.31+454924.5 Mag 7.66 Spectral class G2V (yellow)
PmRA -56.00 PmDE -189.0 SAO 49960 HIP 102189
Tycho2 3574-02567-1 HD 197488 ADS 14190 BD BD+45 3245
Tycho2
Tycho2 3574-02567-1 Pflag RAmdeg 310.58461112 DEmdeg 45.82345838
PmRA -54.4 PmDE -187.8 E RAmdeg 5 E DEmdeg 5
E pmRA 0.9 E pmDE 1.0 EpRAm 1991.32 EpDEm 1991.31
Num 10 Q RAmdeg 0.6 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 1.0 BTmag 8.329 E BTmag 0.016 VTmag 7.654
E VTmag 0.011 Prox 603 TYC T HIP 102189
CCDM RAdeg 310.58478972 DEdeg 45.82389250 EpRA 1990 1.76
EpDE 1990 1.68 E RAdeg 4.7 E DEdeg 4.9 Posflg
Corr 0.1
SAO
SAO 49960 DelFlag RA1950 PmRA1950 -0.0068
DE1950 PmDE1950 -0.193 Vmag 7.9 SpType G0
Double code Source 3 CatNum 1733 DM BD+45 3245
DMcomp BDsup HD 197488 M HD 0
GC RA1950rad 5.4133556 DE1950rad 0.79666845 PmRA2000 -0.0064
PmDE2000 -0.196
Hipparcos
Catalog H HIP 102189 Proxy RAhms 20 42 20.35
DEdms +45 49 26.1 Vmag 7.59 VarFlag R Vmag H
RAdeg 310.585 DEdeg 45.8239 AstroRef Plx 17.96
CCDM 20423+4549 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 197488 BD BD+45 3245
CD CP Dm number +45 3245 VIred 0.64
SpType G2V R SpType Coord arcsec 2000 204220.35+454926.1
Hipparcos 2
HIP 102189 Sn 5 So 0 Nc 1
RArad 5.420727435 DErad 0.799778213 Plx 18.47 PmRA -55.62
PmDE -188.87 E RArad 0.46 E DErad 0.36 E Plx 0.47
E pmRA 0.58 E pmDE 0.41 Hpmag 7.7248 E Hpmag 0.0013
SHp 0.012 VA 0 BV 0.613 E BV 0.01
VI 0.68
CCDM
Ccdm 20423+4549 RComp Comp A Note1
Note2 Discov num DRAs 2.29 DDEs 24.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.7 Sp G0 PmNote *
PmRA -61 PmDE -194 Dm number +45 3245 Cat1 BD
Name2 +45 1733 Cat2 AGK2/3 HD 197488 M HD
ADS BDS A14190 M ADS BDS N IDS IDS 20390N4528A
HIC 102189
 
 
20423+4549 B
 
 
Coord arcsec 2000 204219.66+454953.1 Coord calc 204219.66+454953.1 Mag 10.58 PmRA -1.00
PmDE -9.0 Calc delta mag 2.92
CCDM
Ccdm 20423+4549 RComp Comp B Note1
Note2 Discov num STT 411 DRAs 1.61 DDEs 52.8
R dRAs 90 Year 1940 Theta 331 Rho 21.0
Obs 10 Vmag 10.5 Sp PmNote *
PmRA -8 PmDE -12 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14190 M ADS BDS N IDS IDS 20390N4528B
HIC
 
 
20423+4549 C
 
 
Coord arcsec 2000 204220.09+455035.7 Mag 10.23 PmRA -4.00 PmDE 1.0
Tycho2 3574-02074-1 Calc delta mag 2.57 Calc coord yes
Tycho2
Tycho2 3574-02074-1 Pflag RAmdeg 310.58297025 DEmdeg 45.84243879
PmRA 3.1 PmDE 3.2 E RAmdeg 21 E DEmdeg 25
E pmRA 1.2 E pmDE 1.2 EpRAm 1987.14 EpDEm 1984.73
Num 5 Q RAmdeg 1.3 Q DEmdeg 0.6 Q pmRA 1.3
Q pmDE 0.7 BTmag 10.791 E BTmag 0.045 VTmag 10.372
E VTmag 0.043 Prox 668 TYC T HIP
CCDM RAdeg 310.58296778 DEdeg 45.84243389 EpRA 1990 1.82
EpDE 1990 1.62 E RAdeg 24.6 E DEdeg 31.6 Posflg
Corr 0.0
 
 
20423+4549 D
 
 
Coord arcsec 2000 204219.85+454826.5 Mag 10.6 PmRA 4.00 PmDE 7.0
Tycho2 3574-02542-1 Calc delta mag 2.94 Calc coord yes
Tycho2
Tycho2 3574-02542-1 Pflag RAmdeg 310.58303644 DEmdeg 45.80724379
PmRA 5.0 PmDE 8.4 E RAmdeg 21 E DEmdeg 25
E pmRA 1.2 E pmDE 1.2 EpRAm 1987.40 EpDEm 1985.01
Num 5 Q RAmdeg 2.2 Q DEmdeg 1.0 Q pmRA 2.2
Q pmDE 1.0 BTmag 10.886 E BTmag 0.046 VTmag 10.408
E VTmag 0.043 Prox 553 TYC T HIP
CCDM RAdeg 310.58303250 DEdeg 45.80721944 EpRA 1990 1.81
EpDE 1990 1.63 E RAdeg 23.9 E DEdeg 31.3 Posflg
Corr 0.1
 
 
20423+4549 E
 
 
Coord arcsec 2000 204224.92+454844.2 Coord calc 204224.92+454844.2 Mag 10.55 PmRA -1.00
PmDE -2.0 Tycho2 3574-03272-1 Calc delta mag 2.89
Tycho2
Tycho2 3574-03272-1 Pflag RAmdeg 310.60384738 DEmdeg 45.81227488
PmRA 0.5 PmDE -3.1 E RAmdeg 28 E DEmdeg 30
E pmRA 1.7 E pmDE 1.6 EpRAm 1986.57 EpDEm 1985.90
Num 4 Q RAmdeg 0.7 Q DEmdeg 1.6 Q pmRA 0.7
Q pmDE 1.6 BTmag 11.854 E BTmag 0.099 VTmag 10.312
E VTmag 0.042 Prox 553 TYC T HIP
CCDM RAdeg 310.60384528 DEdeg 45.81229500 EpRA 1990 1.76
EpDE 1990 1.70 E RAdeg 35.7 E DEdeg 38.3 Posflg
Corr -0.1
 
 
20423+4549 F
 
 
Coord arcsec 2000 204221.95+454851.7 Mag 12.2 PmRA -9.00 PmDE 2.0
Calc delta mag 4.54 Calc coord yes
 
 
20423+4549 G
 
 
Coord arcsec 2000 204223.67+454822.4 Mag 14 PmRA 13.00 PmDE 4.0
Calc delta mag 6.34 Calc coord yes
 
 
20423+4549 H
 
 
Coord arcsec 2000 204223.73+454932.7 Mag 12.6 PmRA -6.00 PmDE -1.0
Calc delta mag 4.94 Calc coord yes
 
 
20423+4549 I
 
 
Coord arcsec 2000 204222.73+454822.2 Mag 13.6 Calc delta mag 5.94 Calc coord yes