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Doubles in session


Current system
21086+3012
STF 2762 AB
V389 Cyg


Nearby doubles
14' : 21077+3009
KPP1031

14' : 21092+3023
CBL 90

16' : 21077+3022
UC 256

24' : 21101+3027
KPP4225

24' : 21070+3001
J 1319

27' : 21103+3027
TDT2801

30' : 21078+2945
MLB 715AB

31' : 21074+3038
TDT2767

35' : 21064+3031
TDT2751

40' : 21073+3048
TDT2766

43' : 21115+3033
ALD 5

48' : 21117+3038
J 1235

49' : 21065+2933
AG 413

50' : 21088+3102
ES 375

51' : 21056+3043
TDT2737

51' : 21118+2943
HAU 27

51' : 21091+2922
COU1332

51' : 21075+2924
TDT2769

52' : 21099+3100
HJ 1616AB

55' : 21058+2931
LDS2938

56' : 21109+2925
BAG 29

56' : 21129+3014
BUP 227AB

56' : 21088+2916
MLB 487

60' : 21083+2913
COU1331

62' : 21129+2944
MLB 667

65' : 21080+3116
LDS2940



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.

21086+3012 STF 2762 AB (V389 Cyg)

 
 
21h 08m 38.87s +30° 12' 20.5" P.A. 303.00 sep 3.3 mag 5.70,8.10 Sp B9V dist. 115.74 pc (377.54 l.y.)
 
 
Coord 2000 21086+3012 Discov num STF2762 Comp AB Coord arcsec 2000 21 08 38.87 +30 12 20.5
Date first 1783 Date last 2020 Obs 116
Pa first 315 Pa last 303.1 P.A. Now (θ) 303.1°
Sep first 4.0 Sep last 3.34 Sep. Now (ρ) 3.34"
Mag pri 5.70 Mag sec 8.10 delta mag (ΔM) 2.4 Spectral class B9V (blue-white)
Pri motion ra +032 Sec motion ra +025
Pri motion dec -023 Sec motion dec -021
Notes N (See Notes)
rPM=0.185 (< 0.3, Physical double)
This double is physical.
 
 
21086+3012 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show V389 Cyg 70968 21 08 39 +30 12 20 STF 2762 AB 2020 116 303 3.3 5.70 8.10 2.40 <===
Show 70968 21 08 39 +30 12 20 STF 2762 AC 2007 18 229 59.3 5.70 10.22 4.52
Show 70968 21 08 39 +30 12 20 STF 2762 AD 2002 7 66 73.1 5.70 11.40 5.70
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V389 Cyg Constellation Cygnus SAO 70968 HIP 104371
Tycho2 2701-03919-1 Gaia DR2 1852355451294756352 HD 201433 HR 8094
GC 29562 ADS 14682 BD BD+29 4324 Distance 115.74
Distance ly 377.54
 
 
WDS 21086+3012 STF 2762 AB (V389 Cyg) : NOTES
 
 
discov_num notes refcode
STF2762 A is probably an Alpha CVn-type variable, V389 Cyg. There also may be
a long-period spectroscopic binary in the system.
AB: H 2 97. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21086+3012 STF2762 AB 2006 110 304 3.4 5.70 8.10 B9V N D 210838.87+301220.5
21086+3012 STF2762 AB 2008 114 303 3.4 5.70 8.10 B9V N D 210838.87+301220.5
21086+3012 STF2762 AB 2010 115 305 3.2 5.70 8.10 B9V N D 210838.87+301220.5
21086+3012 STF2762 AB 2012 116 304 3.2 5.70 8.10 B9V N D 210838.87+301220.5
21086+3012 STF2762 AB 2015 113 303 3.4 5.70 8.10 B9V N 210838.87+301220.5
21086+3012 STF2762 AB 2020 116 303 3.3 5.70 8.10 B9V N 210838.87+301220.5

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

 
 
WDS 21086+3012 STF 2762 AB (V389 Cyg) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 23/08/10 Daedalus1 mean difficulty separated 303   Very nice view! Very bright, white primary with a tiny white companion.

 
 
WDS 21086+3012 STF 2762 AB (V389 Cyg) : MEASURES
 
 
Records found: 2
Show date username difficulty sep sep_sigma pa pa_sigma delta_mag # notes
Show 12/07/30 northisup easy 4.00   307.00   3.00 1
Show 23/08/10 Daedalus1 mean difficulty 3.31 0.10 303.00 0.00 2.35 12 Seeing: Pickering 3, poor
 
 
WDS 21086+3012 (V389 Cyg) : VIRTUAL EYEPIECE
 
 

21086+3012 STF2762A mag 5.7 Sp B9V 21086+3012 STF2762B sep 3.0 P.A. 307.00 mag 8.1 21086+3012 STF2762C sep 54.8 P.A. 225.10 mag 10.22 21086+3012 STF2762D sep 65.0 P.A. 62.20 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 21086+3012 (V389 Cyg) : ALADIN DSS IMAGE @ 21h 08m 38.87s +30° 12' 20.5"
 
 
 
 
WDS 21086+3012 STF 2762 AB (V389 Cyg) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21086+3012 STF2762AB distance=0' 21077+3009 KPP1031 distance=14' 21092+3023 CBL 90 distance=14' 21077+3022 UC 256 distance=16' 21101+3027 KPP4225 distance=24' 21070+3001 J 1319 distance=24' 21103+3027 TDT2801 distance=27' 21078+2945 MLB 715AB distance=30' 21078+2945 MLB 715AC distance=30' 21074+3038 TDT2767 distance=31' 21064+3031 TDT2751 distance=35' 21073+3048 TDT2766 distance=40' 21115+3033 ALD 5 distance=43' 21117+3038 J 1235 distance=48' 21065+2933 AG 413 distance=49' 21088+3102 ES 375 distance=50' 21056+3043 TDT2737 distance=51' 21118+2943 HAU 27 distance=51' 21091+2922 COU1332 distance=51' 21075+2924 TDT2769 distance=51' 21099+3100 HJ 1616AB distance=52' 21099+3100 GRV 431AC distance=52' 21058+2931 LDS2938 distance=55' 21109+2925 BAG 29 distance=56' 21129+3014 BAS 7Aa,Ab distance=56' 21129+3014 BUP 227AB distance=56' 21129+3014 BUP 227AC distance=56' 21129+3014 BUP 227AD distance=56' 21129+3014 FYM 141AE distance=56' 21129+3014 FYM 141AF distance=56' 21129+3014 FYM 141AG distance=56' 21088+2916 MLB 487 distance=56' 21083+2913 COU1331 distance=60' 21129+2944 MLB 667 distance=62' 21080+3116 LDS2940 distance=65' 21034+3025 SMA 123 distance=70' 21057+2912 GRV 416 distance=72' 21079+3123 GRV 421 distance=72' 21050+3109 J 3124 distance=76' 21031+3039 GRV 407 distance=77' 21047+3109 DAM 226 distance=77' 21133+3100 BRT 286 distance=77' 21093+3131 COU1333 distance=79' 21025+2958 COU1181 distance=81' 21055+2901 MLB 536 distance=82' 21098+2915 DU 3 distance=82' 21037+3104 STT 427 distance=83' 21046+3116 J 2336 distance=83' 21086+3135 J 2337 distance=83' 21094+2850 DOB9002 distance=83' 21149+3037 BRT 287 distance=84' 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 21086+3012 STF2762 AB 303 3.3
Show 21086+3012 STF2762 AC 229 59.3
Show 21086+3012 STF2762 AD 66 73.1
Show 21077+3009 KPP1031 334 8.3 14
Show 21092+3023 CBL 90 113 54.5 14
Show 21077+3022 UC 256 67 48.1 16
Show 21101+3027 KPP4225 236 2.2 24
Show 21070+3001 J 1319 206 1.7 24
Show 21103+3027 TDT2801 237 0.9 27
Show 21078+2945 MLB 715 AB 40 5.5 30
Show 21078+2945 MLB 715 AC 336 25.3 30
Show 21074+3038 TDT2767 173 10.5 31
Show 21064+3031 TDT2751 148 2.4 35
Show 21073+3048 TDT2766 193 1.9 40
Show 21115+3033 ALD 5 153 3.7 43
Show 21117+3038 J 1235 184 2.8 48
Show 21065+2933 AG 413 107 2.7 49
Show 21088+3102 ES 375 42 4.5 50
Show 21056+3043 TDT2737 322 6.3 51
Show 21118+2943 HAU 27 297 50.0 51
Show 21091+2922 COU1332 20 0.2 51
Show 21075+2924 TDT2769 157 1.1 51
Show 21099+3100 HJ 1616 AB 315 10.3 52
Show 21099+3100 GRV 431 AC 16 22.5 52
Show 21058+2931 LDS2938 247 23.5 55
Show 21109+2925 BAG 29 174 0.2 56
Show 21129+3014 BAS 7 Aa,Ab 246 0.0 56
Show 21129+3014 BUP 227 AB 205 65.2 56
Show 21129+3014 BUP 227 AC 300 91.5 56
Show 21129+3014 BUP 227 AD 63 105.3 56
Show 21129+3014 FYM 141 AE 76 42.8 56
Show 21129+3014 FYM 141 AF 267 63.6 56
Show 21129+3014 FYM 141 AG 97 70.7 56
Show 21088+2916 MLB 487 142 4.3 56
Show 21083+2913 COU1331 37 0.3 60
Show 21129+2944 MLB 667 30 2.4 62
Show 21080+3116 LDS2940 222 7.6 65
Show 21034+3025 SMA 123 145 7.2 70
Show 21057+2912 GRV 416 137 38.2 72
Show 21079+3123 GRV 421 185 14.6 72
Show 21050+3109 J 3124 208 4.5 76
Show 21031+3039 GRV 407 221 59.2 77
Show 21047+3109 DAM 226 16 4.3 77
Show 21133+3100 BRT 286 250 6.6 77
Show 21093+3131 COU1333 258 0.6 79
Show 21025+2958 COU1181 214 0.7 81
Show 21055+2901 MLB 536 236 5.4 82
Show 21098+2915 DU 3 15 6.1 82
Show 21037+3104 STT 427 153 4.1 83
Show 21046+3116 J 2336 40 9.1 83
Show 21086+3135 J 2337 349 6.2 83

 
 
WDS 21086+3012 : COMPONENTS
 
 
  A B C
B pa=307.0°
sep=3.03"
 
C pa=225.1°
sep=54.77"
pa=222.0°
sep=54.43"
 
D pa=62.2°
sep=64.99"
pa=64.6°
sep=66.34"
pa=54.4°
sep=118.45"
 
 
21086+3012 A
 
 
Var name V389 Cyg Coord arcsec 2000 210838.87+301220.5 Mag 5.7 Spectral class B9V (blue-white)
PmRA 32.00 PmDE -23.0 SAO 70968 HIP 104371
Tycho2 2701-03919-1 HD 201433 HR 8094 GC 29562
ADS 14682 BD BD+29 4324
Tycho2
Tycho2 2701-03919-1 Pflag RAmdeg 317.16205752 DEmdeg 30.20563408
PmRA 31.8 PmDE -23.0 E RAmdeg 4 E DEmdeg 3
E pmRA 2.6 E pmDE 2.6 EpRAm 1991.34 EpDEm 1991.85
Num 3 Q RAmdeg 0.2 Q DEmdeg 0.7 Q pmRA 0.3
Q pmDE 0.6 BTmag 5.608 E BTmag 0.014 VTmag 5.698
E VTmag 0.009 Prox 34 TYC T HIP 104371
CCDM A RAdeg 317.16196944 DEdeg 30.20568611 EpRA 1990 1.37
EpDE 1990 1.86 E RAdeg 3.6 E DEdeg 3.3 Posflg
Corr -0.4
SAO
SAO 70968 DelFlag RA1950 PmRA1950 0.0018
DE1950 PmDE1950 -0.014 Vmag 5.7 SpType A0
Double code Source 70 CatNum 29562 DM BD+29 4324
DMcomp BDsup HD 201433 M HD 0
GC 29562 RA1950rad 5.52625605 DE1950rad 0.52364625 PmRA2000 0.0019
PmDE2000 -0.017
Hipparcos
Catalog H HIP 104371 Proxy H RAhms 21 08 38.87
DEdms +30 12 20.5 Vmag 5.6 VarFlag 1 R Vmag H
RAdeg 317.162 DEdeg 30.2057 AstroRef A Plx 7.35
CCDM 21087+3012 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 305 Rho 3.422 HD 201433 BD BD+29 4324
CD CP Dm number +29 4324 VIred -0.07
SpType B9V R SpType Coord arcsec 2000 210838.87+301220.5
Hipparcos 2
HIP 104371 Sn 15 So 3 Nc 2
RArad 5.5355206387 DErad 0.5271887056 Plx 8.64 PmRA 25.14
PmDE -20.88 E RArad 0.3 E DErad 0.33 E Plx 0.55
E pmRA 0.38 E pmDE 0.36 Hpmag 5.5937 E Hpmag 0.0021
SHp 0.026 VA 1 BV -0.048 E BV 0.005
VI -0.03
 
 
21086+3012 B
 
 
Coord arcsec 2000 210838.68+301222.3 Mag 8.1 PmRA 25.00 PmDE -21.0
Calc delta mag 2.4 Calc coord yes
 
 
21086+3012 C
 
 
Coord arcsec 2000 210835.88+301141.9 Mag 10.22 PmRA -7.00 PmDE -4.0
Calc delta mag 4.52 Calc coord yes
 
 
21086+3012 D
 
 
Coord arcsec 2000 210843.31+301250.8 Mag 11.4 PmRA 2.00 PmDE -5.0
Calc delta mag 5.7 Calc coord yes