18208+7120 STT 353 AB,C
18h 20m 45.44s +71° 20' 15.8" P.A. 117.00 sep 72.5 mag 4.21,12.70 Sp B7V+B9V+ dist. 92.85 pc (302.88 l.y.)
Coord 2000 |
18208+7120 |
|
Discov num |
STT 353 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
18 20 45.44 +71 20 15.8 |
|
Date first |
1912 |
|
Date last |
2007 |
|
Obs |
5 |
|
Pa first |
115 |
|
Pa last |
117 |
|
P.A. Now (θ) |
117° |
|
Sep first |
70.8 |
|
Sep last |
72.5 |
|
Sep. Now (ρ) |
72.5" |
|
Mag pri |
4.21 |
|
Mag sec |
12.70 |
|
delta mag (ΔM) |
8.49 |
|
Spectral class |
B7V+B9V+ (blue-white/blue-white) |
|
Pri motion ra |
-006 |
|
Sec motion ra |
-006 |
|
Pri motion dec |
+036 |
|
Sec motion dec |
-006 |
|
Notes |
N
U
(See Notes, Proper motion indicates non-physical) |
|
rPM=1.151
This double is not physical.
18208+7120 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Phi Dra |
9084 |
18 20 45 +71 20 16 |
STT 353 AB |
2021 |
95 |
262 |
0.5 |
4.46 |
5.90 |
1.44 |
Y |
|
Show |
|
9084 |
18 20 45 +71 20 16 |
STT 353 AB,C |
2007 |
5 |
117 |
72.5 |
4.21 |
12.70 |
8.49 |
|
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Draco |
|
SAO |
9084 |
|
HIP |
89908 |
|
Tycho2 |
4437-01492-1 |
|
HD |
170000 |
|
HR |
6920 |
|
GC |
25114 |
|
ADS |
11311 |
|
BD |
BD+71 889 |
|
Bayer |
Phi Draconis |
|
Bayer name |
Phi Dra |
|
Distance |
92.85 |
|
Distance ly |
302.88 |
|
Bayer greek |
φ Dra |
|
WDS 18208+7120 STT 353 AB,C : NOTES
discov_num |
notes |
refcode |
STT 353 |
phi Dra = 43 Dra. A premature orbit has been computed. |
D__1883 |
|
Almost rectilinear relative motion, long period! |
Ole1975b |
|
Period of A (SB1) is 127.99d. |
XXX2016 |
|
An Alpha CVn type variable. |
|
|
See Baize & Petit (1989) catalog of doubles with variable component. |
Baz1989d |
|
Also an unresolved 128.165d spectroscopic binary. |
Mug2017b |
REFERENCES
refcode |
metd |
author |
reference |
Baz1989d |
- |
Baize, P. & Petit, M. |
1989A&AS...77..497B |
Baz1989d |
|
A&AS 77, 497, 1989 |
|
D__1883 |
Ma - |
Dembowski, H. |
................... |
D__1883 |
|
Misure micrometriche di Stelle Doppie e multiple... |
|
D__1883 |
|
(Rome, Coi tipi del Salviucci), vol. I, 1883 |
|
Mug2017b |
not - |
Bischoff, R., Mugrauer, M., Zehe, T., Wockel, D., Pannicke, A., Lux, O., |
2017AN....338..671B |
Mug2017b |
|
Wagner, D., Heyne, T., Adam, C. & Neuhauser, R. |
|
Mug2017b |
|
AN 338, 671, 2017 |
|
Ole1975b |
orb - |
Olevic, D. |
1975BOBeo.126...49O |
Ole1975b |
|
Bull. Obs. Astron. Belgrade #126, 49, 1975 |
|
XXX2016 |
not - |
Liska, J. |
2016MNRAS.461..939L |
XXX2016 |
|
MNRAS 461, 939, 2016 |
|
DISCOVERER
idgroup |
discov |
author |
1 |
STT |
Struve, O. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
18208+7120 |
STT 353 |
AB,C |
2007 |
4 |
117 |
72.5 |
4.40 |
12.70 |
A0pSi: |
N D |
182045.44+712015.8 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18208+7120 STT 353 AB,C : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18208+7120 STT 353 AB,C : MEASURES
No records found.
WDS 18208+7120 : 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 18208+7120 : ALADIN DSS IMAGE @ 18h 20m 45.44s +71° 20' 15.8"
WDS 18208+7120 STT 353 AB,C : 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 |
|
18208+7120 |
STT 353 |
AB |
262 |
0.5 |
|
Show |
|
18208+7120 |
STT 353 |
AB,C |
117 |
72.5 |
|
Show |
|
18211+7137 |
GIC9022 |
|
318 |
2.0 |
17 |
Show |
|
18263+7119 |
TDT 867 |
|
303 |
1.8 |
27 |
Show |
|
18186+7042 |
SKF2737 |
|
265 |
29.7 |
40 |
Show |
|
18312+7131 |
WIS 328 |
|
182 |
940.0 |
51 |
Show |
|
18317+7120 |
A 1170 |
|
188 |
0.9 |
53 |
Show |
|
18164+7023 |
KPP4097 |
|
323 |
5.5 |
62 |
Show |
|
18241+7220 |
BVD 127 |
|
327 |
19.8 |
62 |
Show |
|
18072+7131 |
A 1168 |
|
327 |
0.7 |
66 |
Show |
|
18168+7011 |
TDT 771 |
AB |
55 |
0.6 |
72 |
Show |
|
18058+7101 |
TDS 904 |
|
108 |
0.9 |
76 |
Show |
|
18211+7244 |
LAB 5 |
Aa,Ab |
220 |
0.1 |
84 |
Show |
|
18211+7244 |
BUP 182 |
AB |
357 |
177.8 |
84 |
Show |
|
18276+7000 |
LDS1886 |
|
44 |
96.0 |
87 |
Show |
|
18211+7244 |
BUP 182 |
BC |
303 |
9.1 |
87 |
Show |
|
18339+7016 |
MLR 97 |
|
111 |
0.2 |
92 |
Show |
|
18053+7217 |
TDT 668 |
|
43 |
2.0 |
93 |
Show |
|
18022+7151 |
UC 235 |
|
353 |
32.8 |
94 |
Show |
|
18118+7248 |
UC 3528 |
|
177 |
37.8 |
97 |
Show |
|
18324+7245 |
CRB 205 |
|
208 |
12.5 |
101 |
Show |
|
18338+7003 |
STF2370 |
|
135 |
10.5 |
102 |
Show |
|
18325+6957 |
STF2366 |
AB |
333 |
29.8 |
102 |
Show |
|
18325+6957 |
FOX9012 |
AC |
249 |
10.3 |
102 |
Show |
|
18343+7003 |
KPP 764 |
|
231 |
6.6 |
103 |
Show |
|
18099+6941 |
ARR 1 |
|
53 |
1.2 |
114 |
Show |
|
18225+6924 |
UC 239 |
|
264 |
23.8 |
117 |
Show |
|
18275+7316 |
TOI2253 |
|
291 |
26.3 |
120 |
Show |
|
18400+7241 |
CFN 15 |
|
110 |
0.8 |
121 |
Show |
|
18055+6945 |
TDT 673 |
|
241 |
2.0 |
122 |
Show |
|
18393+6955 |
WFC 211 |
|
68 |
9.5 |
126 |
Show |
|
18332+6929 |
SKF2738 |
|
333 |
15.2 |
128 |
Show |
|
18335+6929 |
MLR 95 |
|
44 |
0.2 |
129 |
Show |
|
18113+6915 |
STF2307 |
|
205 |
4.4 |
135 |
Show |
|
18383+6937 |
CTI 848 |
|
280 |
1.0 |
136 |
Show |
|
18045+7316 |
HDS2544 |
|
29 |
6.9 |
138 |
Show |
|
18393+6931 |
TOI1859 |
|
184 |
10.6 |
144 |
Show |
|
18216+6855 |
A 1169 |
|
304 |
1.0 |
146 |
Show |
|
18273+7344 |
KPP1362 |
|
123 |
10.3 |
147 |
Show |
|
18145+6851 |
LDS1463 |
|
346 |
15.0 |
153 |
Show |
|
18161+6839 |
LDS1464 |
|
32 |
110.2 |
164 |
Show |
|
18227+7421 |
TDT 824 |
|
275 |
1.2 |
182 |
Show |
|
18371+7409 |
TDT 960 |
|
220 |
2.0 |
184 |
Show |
|
18054+6820 |
TDT 671 |
|
90 |
0.6 |
198 |
Show |
|
18187+7447 |
KPP 695 |
|
11 |
6.2 |
208 |
Show |
|
18402+6815 |
KPP 813 |
|
166 |
7.0 |
211 |
Show |
|
18196+6743 |
MLB 413 |
|
147 |
2.6 |
219 |
Show |
|
18128+6737 |
UC 237 |
|
172 |
57.0 |
228 |
Show |
|
18397+7455 |
LDS1889 |
|
340 |
3.9 |
228 |
Show |
|
18114+6721 |
LDS1462 |
|
237 |
119.1 |
244 |
Show |
|
18384+6708 |
STF2384 |
AB |
307 |
0.4 |
270 |
|
|
WDS 18208+7120 : COMPONENTS
|
A |
B |
B |
pa=245.8°
sep=0.16"
| |
C |
pa=147.9°
sep=38.87"
| pa=147.6°
sep=38.89"
|
18208+7120 A
Name |
Phi Dra |
|
Coord arcsec 2000 |
182045.44+712015.8 |
|
Mag |
4.46 |
|
Spectral class |
B7V (blue-white) |
|
PmRA |
-5.00 |
|
PmDE |
36.0 |
|
SAO |
9084 |
|
HIP |
89908 |
|
Tycho2 |
4437-01492-1 |
|
HD |
170000 |
|
HR |
6920 |
|
GC |
25114 |
|
BD |
BD+71 889 |
|
Bayer |
Phi Draconis |
|
Bayer name |
Phi Dra |
|
Flamsteed |
43 Draconis |
|
Flamsteed name |
43 Dra |
|
Tycho2 |
4437-01492-1 |
|
Pflag |
|
|
RAmdeg |
275.18923586 |
|
DEmdeg |
71.33780684 |
|
PmRA |
-5.5 |
|
PmDE |
32.7 |
|
E RAmdeg |
3 |
|
E DEmdeg |
3 |
|
E pmRA |
0.7 |
|
E pmDE |
0.7 |
|
EpRAm |
1991.41 |
|
EpDEm |
1991.40 |
|
Num |
15 |
|
Q RAmdeg |
2.0 |
|
Q DEmdeg |
1.7 |
|
Q pmRA |
2.0 |
|
Q pmDE |
1.6 |
|
BTmag |
4.130 |
|
E BTmag |
0.014 |
|
VTmag |
4.210 |
|
E VTmag |
0.009 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
89908 |
|
CCDM |
AB |
|
RAdeg |
275.18927500 |
|
DEdeg |
71.33773139 |
|
EpRA 1990 |
1.76 |
|
EpDE 1990 |
1.70 |
|
E RAdeg |
3.3 |
|
E DEdeg |
3.3 |
|
Posflg |
P |
|
Corr |
0.0 |
|
SAO |
9084 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.002 |
|
DE1950 |
|
|
PmDE1950 |
0.041 |
|
Vmag |
4.2 |
|
SpType |
A0p |
|
Double code |
|
|
Source |
71 |
|
CatNum |
693 |
|
DM |
BD+71 889 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
170000 |
|
M HD |
0 |
|
GC |
25114 |
|
RA1950rad |
4.80609172 |
|
DE1950rad |
1.2446245 |
|
PmRA2000 |
-0.0009 |
|
PmDE2000 |
0.04 |
|
Catalog |
H |
|
HIP |
89908 |
|
Proxy |
H |
|
RAhms |
18 20 45.44 |
|
DEdms |
+71 20 15.8 |
|
Vmag |
4.22 |
|
VarFlag |
1 |
|
R Vmag |
G |
|
RAdeg |
275.189 |
|
DEdeg |
71.3377 |
|
AstroRef |
A |
|
Plx |
11.28 |
|
CCDM |
18208+7120 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
2 |
|
MultFlag |
C |
|
Source |
|
|
Qual |
A |
|
M HIP |
AB |
|
Theta |
274 |
|
Rho |
0.382 |
|
HD |
170000 |
|
BD |
BD+71 889 |
|
CD |
|
|
CP |
|
|
Dm number |
+71 889 |
|
VIred |
-0.11 |
|
SpType |
A0p (Si) |
|
R SpType |
|
|
Coord arcsec 2000 |
182045.44+712015.8 |
|
HIP |
89908 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
2 |
|
RArad |
4.8029600357 |
|
DErad |
1.2450782239 |
|
Plx |
10.77 |
|
PmRA |
-5.03 |
|
PmDE |
37.86 |
|
E RArad |
0.39 |
|
E DErad |
0.34 |
|
E Plx |
0.38 |
|
E pmRA |
0.43 |
|
E pmDE |
0.39 |
|
Hpmag |
4.2004 |
|
E Hpmag |
0.0017 |
|
SHp |
0.012 |
|
VA |
1 |
|
BV |
-0.093 |
|
E BV |
0.007 |
|
VI |
-0.11 |
|
Ccdm |
18208+7120 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
-2.60 |
|
DDEs |
16.3 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
3 |
|
Vmag |
4.4 |
|
Sp |
A0 |
|
PmNote |
* |
|
PmRA |
-10 |
|
PmDE |
40 |
|
Dm number |
+71 889 |
|
Cat1 |
BD |
|
Name2 |
+71 535 |
|
Cat2 |
AGK2/3 |
|
HD |
170000 |
|
M HD |
|
|
ADS BDS |
A11311 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18222N7117A |
|
HIC |
89908 |
|
18208+7120 B
Coord arcsec 2000 |
182045.41+712015.7 |
|
Mag |
5.9 |
|
Spectral class |
B9V (blue-white) |
|
Calc delta mag |
1.44 |
|
Calc coord |
yes |
|
Ccdm |
18208+7120 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
* |
|
Note2 |
|
|
Discov num |
STT 353 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1984 |
|
Theta |
252 |
|
Rho |
0.5 |
|
Obs |
28 |
|
Vmag |
6.1 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11311 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18222N7117B |
|
HIC |
89908 |
|
18208+7120 C
Coord arcsec 2000 |
182049.75+711942.9 |
|
Mag |
12.7 |
|
Spectral class |
B9V (blue-white) |
|
PmRA |
-6.00 |
|
PmDE |
-6.0 |
|
Calc delta mag |
8.24 |
|
Calc coord |
yes |
|
Ccdm |
18208+7120 |
|
RComp |
|
|
Comp |
C |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
STT 353 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1912 |
|
Theta |
115 |
|
Rho |
70.8 |
|
Obs |
|
|
Vmag |
12.7 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11311 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18222N7117C |
|
HIC |
|
|