20170+3725 HDS 2891 Aa,Ab
20h 17m 00.03s +37° 25' 23.8" P.A. 55.00 sep 0.9 mag 8.11,11.25 Sp WNs... dist. 172.12 pc (561.46 l.y.)
Coord 2000 |
20170+3725 |
|
Discov num |
HDS2891 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
20 17 00.03 +37 25 23.8 |
|
Date first |
1991 |
|
Date last |
2016 |
|
Obs |
4 |
|
Pa first |
50 |
|
Pa last |
54.6 |
|
P.A. Now (θ) |
54.6° |
|
Sep first |
0.9 |
|
Sep last |
0.881 |
|
Sep. Now (ρ) |
0.881" |
|
Mag pri |
8.11 |
|
Mag sec |
11.25 |
|
delta mag (ΔM) |
3.14 |
|
Spectral class |
WNs... (Wolf-Rayet) |
|
Pri motion ra |
-007 |
|
Sec motion ra |
-002 |
|
Pri motion dec |
-005 |
|
Sec motion dec |
-007 |
|
Notes |
N
(See Notes) |
|
rPM=0.626
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 HDS 2891 Aa,Ab : 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 |
HDS2891 |
Aa,Ab |
1991 |
2 |
50 |
0.9 |
8.11 |
11.25 |
WNs... |
D |
201700.03+372523.8 |
20170+3725 |
HDS2891 |
Aa,Ab |
2016 |
3 |
55 |
0.9 |
8.11 |
11.25 |
WNs... |
N |
201700.03+372523.8 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 20170+3725 HDS 2891 Aa,Ab : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 20170+3725 HDS 2891 Aa,Ab : MEASURES
No records found.
WDS 20170+3725 : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
|
WDS 20170+3725 : ALADIN DSS IMAGE @ 20h 17m 00.03s +37° 25' 23.8"
WDS 20170+3725 HDS 2891 Aa,Ab : NEIGHBORHOODS
|
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 |
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 |
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 |
|
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 |
|
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 |
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 |
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 |
|