20170+3725 CIA 9 Aa1,2

 
 
20h 17m 00.03s +37° 25' 23.8" P.A. 305.00 sep 0.0 mag 7.20,8.00 Sp WN5+O9V dist. 172.12 pc (561.46 l.y.)
 
 
Coord 2000 20170+3725 Discov num CIA   9 Comp Aa1,2 Coord arcsec 2000 20 17 00.03 +37 25 23.8
Date first 2013 Date last 2013 Obs 1
Pa first 305 Pa last 305.3 P.A. Now (θ) 305.3°
Sep first 0.0 Sep last 0.012 Sep. Now (ρ) 0.012"
Mag pri 7.20 Mag sec 8.00 delta mag (ΔM) 0.8 Spectral class WN5+O9V (Wolf-Rayet/blue)
Pri motion ra -007 Sec motion ra
Pri motion dec -005 Sec motion dec
Notes N K (See Notes, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
20170+3725 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 69755 20 17 00 +37 25 24 CIA 9 Aa1,2 2013 1 305 0.0 7.20 8.00 0.80 <===
Show 69755 20 17 00 +37 25 24 HDS 2891 Aa,Ab 2016 4 55 0.9 8.11 11.25 3.14
Show HD 193077 69755 20 17 00 +37 25 24 A 1423 AB 2016 9 128 4.4 8.11 12.10 3.99
Quadruple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 69755 HIP 99982 Tycho2 2684-00857-1
Gaia DR2 2060661846184974464 HD 193077 BD BD+36 3987 Distance 172.12
Distance ly 561.46
 
 
WDS 20170+3725 CIA 9 Aa1,2 : NOTES
 
 
discov_num notes refcode
CIA 9 Aa1,Aa2: Primary is Wolf-Rayet WR 138, distance 1380pc. Resolved with
CHARA Array by Richardson et al. (2016), who infer the following
stellar parameters for the WR star and its close companion:
Spectral type WN5o O9 V
T* (kK) 56000 +/- 5000 31000 +/- 2000
log L (Lsun) 5.35 +/- 0.05 4.82 +/- 0.05
R* (Rsun) 4.8 +/- 2 8.9 +/- 2 CIA2016b
 
 
REFERENCES
 
 
refcode metd author reference
CIA2016b Kc j Richardson, N.D., Shenar, T., Roy-Loubier, O., Schaefer, G., Moffat, A.F.J., 2016MNRAS.461.4115R
CIA2016b St-Louis, N., Gies, D.R., Farrington, C., Hill, G.M., Williams, P.M.,
CIA2016b Gordon, K., Pablo, H., & Ramiaramanantsoa, T.
CIA2016b MNRAS 461, 4115, 2016
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
312 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
20170+3725 CIA 9 Aa1,2 2013 1 305 0.0 7.20 8.00 WN5+O9V N K 201700.03+372523.8

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

 
 
WDS 20170+3725 CIA 9 Aa1,2 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20170+3725 CIA 9 Aa1,2 : MEASURES
 
 
No records found.

 
 
WDS 20170+3725 : VIRTUAL EYEPIECE
 
 

20170+3725 A  1423A mag 8.11 Sp WN 20170+3725 CIA   9Aa2 mag 8 Sp O9V 20170+3725 HDS2891Ab sep 0.8 P.A. 48.20 mag 11.25 20170+3725 A  1423B sep 3.8 P.A. 134.60 mag 12.1 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 20170+3725 : ALADIN DSS IMAGE @ 20h 17m 00.03s +37° 25' 23.8"
 
 
 
 
WDS 20170+3725 CIA 9 Aa1,2 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


20170+3725  CIA   9Aa1,2 distance=0' 20168+3731  ARY  25 distance=6' 20176+3729  SLE 987 distance=9' 20171+3738  SLE 986AB distance=14' 20171+3738  SLE 986AC distance=14' 20165+3739  BU  442UV distance=15' 20165+3739  BU  442BC distance=15' 20165+3739  BU  442BD distance=15' 20165+3739  ABH 135BE distance=15' 20165+3739  ABH 135BF distance=15' 20165+3739  ABH 135BO distance=15' 20165+3739  BU  442BP distance=15' 20165+3739  BU  442BR distance=15' 20165+3739  BU  442BS distance=15' 20165+3739  BU  442BT distance=15' 20165+3739  BU  442BU distance=15' 20165+3739  BU  442BV distance=15' 20165+3739  BU  442CD distance=15' 20165+3739  BU  442CU distance=15' 20165+3739  BU  442CV distance=15' 20165+3739  BU  442AB distance=15' 20165+3739  SLE 982AG distance=15' 20165+3739  SLE 982AH distance=15' 20165+3739  SLE 982AI distance=15' 20165+3739  SLE 982AJ distance=15' 20165+3739  SLE 982AK distance=15' 20165+3739  SLE 982AL distance=15' 20165+3739  SLE 982AM distance=15' 20165+3739  SLE 982AN distance=15' 20165+3739  BU  442AQ distance=15' 20165+3739  SLV   8AC distance=15' 20165+3739  BU  442AP distance=15' 20165+3739  BU  442AR distance=15' 20165+3739  ABH 135AD distance=15' 20165+3739  SLE 982AO distance=15' 20161+3738  SLE 980 distance=17' 20179+3712  SEI1071 distance=18' 20169+3743  SLE 985 distance=18' 20177+3740  SLE 989 distance=18' 20185+3735  TDT2155 distance=21' 20155+3713  ES 2189 distance=21' 20187+3720  SLE 995 distance=22' 20162+3745  TOB 183 distance=23' 20187+3715  SLE 994 distance=23' 20189+3730  TDT2160 distance=23' 20165+3703  ARY  24 distance=23' 20189+3723  BKO 823 distance=24' 20150+3729  KPP2316 distance=24' 20191+3720  TDT2163 distance=26' 20191+3730  SLE 999 distance=26' 20160+3751  TDT2130 distance=28' 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 20170+3725 HDS2891 Aa,Ab 55 0.9
Show 20170+3725 A 1423 AB 128 4.4
Show 20170+3725 CIA 9 Aa1,2 305 0.0
Show 20168+3731 ARY 25 293 147.1 6
Show 20176+3729 SLE 987 208 11.1 9
Show 20171+3738 SLE 986 AB 347 6.4 14
Show 20171+3738 SLE 986 AC 1 17.9 14
Show 20165+3739 BU 442 UV 127 8.0 15
Show 20165+3739 BU 442 BC 49 16.9 15
Show 20165+3739 BU 442 BD 2 20.1 15
Show 20165+3739 ABH 135 BE 88 50.2 15
Show 20165+3739 ABH 135 BF 139 64.4 15
Show 20165+3739 ABH 135 BO 125 41.5 15
Show 20165+3739 BU 442 BP 269 16.6 15
Show 20165+3739 BU 442 BR 308 34.4 15
Show 20165+3739 BU 442 BS 124 3.7 15
Show 20165+3739 BU 442 BT 162 6.5 15
Show 20165+3739 BU 442 BU 74 26.0 15
Show 20165+3739 BU 442 BV 86 31.3 15
Show 20165+3739 BU 442 CD 306 15.1 15
Show 20165+3739 BU 442 CU 109 12.7 15
Show 20165+3739 BU 442 CV 116 20.4 15
Show 20165+3739 BU 442 AB 103 18.3 15
Show 20165+3739 SLE 982 AG 10 88.5 15
Show 20165+3739 SLE 982 AH 19 111.6 15
Show 20165+3739 SLE 982 AI 43 63.2 15
Show 20165+3739 SLE 982 AJ 34 96.5 15
Show 20165+3739 SLE 982 AK 34 114.9 15
Show 20165+3739 SLE 982 AL 27 177.3 15
Show 20165+3739 SLE 982 AM 65 88.9 15
Show 20165+3739 SLE 982 AN 76 155.9 15
Show 20165+3739 BU 442 AQ 156 8.7 15
Show 20165+3739 SLV 8 AC 77 31.4 15
Show 20165+3739 BU 442 AP 155 4.7 15
Show 20165+3739 BU 442 AR 332 19.2 15
Show 20165+3739 ABH 135 AD 49 24.4 15
Show 20165+3739 SLE 982 AO 118 58.7 15
Show 20161+3738 SLE 980 226 14.2 17
Show 20179+3712 SEI1071 11 27.5 18
Show 20169+3743 SLE 985 186 14.1 18
Show 20177+3740 SLE 989 223 8.9 18
Show 20185+3735 TDT2155 125 0.6 21
Show 20155+3713 ES 2189 136 3.3 21
Show 20187+3720 SLE 995 143 8.8 22
Show 20162+3745 TOB 183 256 14.7 23
Show 20187+3715 SLE 994 353 14.5 23
Show 20189+3730 TDT2160 274 6.0 23
Show 20165+3703 ARY 24 307 96.3 23
Show 20189+3723 BKO 823 201 6.4 24
Show 20150+3729 KPP2316 227 19.3 24
Show 20191+3720 TDT2163 289 3.7 26

 
 
WDS 20170+3725 : COMPONENTS
 
 
  A Aa2 Ab
Aa2 pa=311.7°
sep=0.01"
 
Ab pa=48.2°
sep=0.77"
pa=49.0°
sep=0.77"
 
B pa=134.6°
sep=3.82"
pa=134.6°
sep=3.83"
pa=146.1°
sep=3.85"
 
 
20170+3725 A
 
 
Name HD 193077 Coord arcsec 2000 201700.03+372523.8 Mag 8.11 Spectral class WN (Wolf-Rayet)
PmRA -5.00 PmDE -16.0 SAO 69755 HIP 99982
Tycho2 2684-00857-1 HD 193077 ADS 13641 BD BD+36 3987
Tycho2
Tycho2 2684-00857-1 Pflag RAmdeg 304.25010340 DEmdeg 37.42327537
PmRA -6.6 PmDE -4.7 E RAmdeg 6 E DEmdeg 5
E pmRA 1.0 E pmDE 1.1 EpRAm 1990.94 EpDEm 1991.42
Num 14 Q RAmdeg 1.5 Q DEmdeg 0.8 Q pmRA 1.6
Q pmDE 0.9 BTmag 8.454 E BTmag 0.016 VTmag 8.112
E VTmag 0.012 Prox 9 TYC T HIP 99982
CCDM A RAdeg 304.25012139 DEdeg 37.42328639 EpRA 1990 1.53
EpDE 1990 1.75 E RAdeg 5.8 E DEdeg 5.0 Posflg
Corr 0.0
SAO
SAO 69755 DelFlag RA1950 PmRA1950 0.001
DE1950 PmDE1950 0.017 Vmag 7.8 SpType Oc
Double code Source 5 CatNum 1950 DM BD+36 3987
DMcomp BDsup HD 193077 M HD 0
GC RA1950rad 5.30206118 DE1950rad 0.65044655 PmRA2000 0.0013
PmDE2000 0.015
Hipparcos
Catalog H HIP 99982 Proxy H RAhms 20 17 00.03
DEdms +37 25 23.8 Vmag 7.99 VarFlag R Vmag H
RAdeg 304.25 DEdeg 37.4233 AstroRef A Plx 3.89
CCDM 20170+3725 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AC
Theta 50 Rho 0.865 HD 193077 BD BD+36 3987
CD CP Dm number +36 3987 VIred 0.34
SpType WNs... R SpType Coord arcsec 2000 201700.03+372523.8
Hipparcos 2
HIP 99982 Sn 15 So 3 Nc 2
RArad 5.3101663439 DErad 0.6531595631 Plx 5.81 PmRA -3.85
PmDE -4.76 E RArad 0.82 E DErad 0.95 E Plx 1.18
E pmRA 0.93 E pmDE 1.03 Hpmag 8.0663 E Hpmag 0.0015
SHp 0.02 VA 0 BV 0.294 E BV 0.015
VI 0.34
CCDM
Ccdm 20170+3725 RComp Comp A Note1
Note2 Discov num DRAs 0.03 DDEs 23.7
R dRAs 82 Year Theta Rho
Obs 3 Vmag 8.1 Sp OC PmNote *
PmRA -2 PmDE -7 Dm number +36 3987 Cat1 BD
Name2 +37 1950 Cat2 AGK2/3 HD 193077 M HD
ADS BDS A13641 M ADS BDS N IDS IDS 20133N3707A
HIC 99982
 
 
20170+3725 Aa2
 
 
Coord arcsec 2000 201700.03+372523.8 Mag 8 Spectral class O9V (blue) Calc delta mag 0.8
Calc coord yes
 
 
20170+3725 Ab
 
 
Coord arcsec 2000 201700.08+372524.3 Mag 11.25 PmRA -2.00 PmDE -7.0
Calc delta mag 4.05 Calc coord yes
 
 
20170+3725 B
 
 
Coord arcsec 2000 201700.26+372521.1 Mag 12.1 Calc delta mag 4.9 Calc coord yes
CCDM
Ccdm 20170+3725 RComp Comp B Note1
Note2 Discov num A 1423 DRAs DDEs
R dRAs Year 1906 Theta 130 Rho 4.4
Obs 3 Vmag 12.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13641 M ADS BDS N IDS IDS 20133N3707B
HIC 99982