18355+2336 STT 359 (HD 171745)
18h 35m 30.40s +23° 36' 19.9" P.A. 5.00 sep 0.8 mag 6.35,6.62 Sp G9III+ dist. 144.3 pc (470.71 l.y.)
Coord 2000 |
18355+2336 |
|
Discov num |
STT 359 |
|
Comp |
|
|
Coord arcsec 2000 |
18 35 30.40 +23 36 19.9 |
|
Date first |
1843 |
|
Date last |
2021 |
|
Obs |
247 |
|
Pa first |
0 |
|
Pa last |
5.2 |
|
P.A. Now (θ) |
3.2° |
|
Sep first |
0.9 |
|
Sep last |
0.79 |
|
Sep. Now (ρ) |
0.755" |
|
Mag pri |
6.35 |
|
Mag sec |
6.62 |
|
delta mag (ΔM) |
0.27 |
|
Spectral class |
G9III+ (yellow) |
|
Pri motion ra |
+005 |
|
Sec motion ra |
+005 |
|
Pri motion dec |
+003 |
|
Sec motion dec |
+003 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 171745 |
|
Constellation |
Hercules |
|
SAO |
86224 |
|
HIP |
91139 |
|
Tycho2 |
2107-00474-1 |
|
HD |
171745 |
|
HR |
6980 |
|
GC |
25407 |
|
ADS |
11479 |
|
BD |
BD+23 3385 |
|
Distance |
144.3 |
|
Distance ly |
470.71 |
|
ORBITAL ELEMENTS
Period (P) | 219.3y | ± 8.8 |
Periastron (T) | 1929.081y | ± 0.54 |
Semi-major axis (a) | 0.425a | ± 0.014 |
Eccentricity (e) | 0.8393 | ± 0.0066 |
Inclination (i) | 119.9° | ± 2 |
Longitude of periastron (ω) | 197.7° | ± 2.1 |
Node (Ω) | 10° | ± 1.2 |
Notes | n | |
Reference | Sca2009a | |
Equinox | 2000 | |
Last observation | 2006 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
6.6 |
0.711 |
2001 |
6.4 |
0.714 |
2002 |
6.3 |
0.717 |
2003 |
6.1 |
0.720 |
2004 |
5.9 |
0.723 |
2005 |
5.8 |
0.726 |
2006 |
5.6 |
0.728 |
2007 |
5.5 |
0.731 |
2008 |
5.3 |
0.733 |
2009 |
5.2 |
0.735 |
2010 |
5.0 |
0.737 |
2011 |
4.9 |
0.739 |
2012 |
4.7 |
0.741 |
2013 |
4.6 |
0.743 |
2014 |
4.5 |
0.745 |
2015 |
4.3 |
0.746 |
2016 |
4.2 |
0.748 |
2017 |
4.0 |
0.749 |
2018 |
3.9 |
0.750 |
2019 |
3.7 |
0.751 |
2020 |
3.6 |
0.752 |
2021 |
3.5 |
0.753 |
2022 |
3.3 |
0.754 |
2023 |
3.2 |
0.755 |
2024 |
3.0 |
0.756 |
2025 |
2.9 |
0.756 |
2026 |
2.7 |
0.757 |
2027 |
2.6 |
0.757 |
2028 |
2.5 |
0.757 |
2029 |
2.3 |
0.757 |
2030 |
2.2 |
0.758 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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|
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|
Measures: green=micrometric, blue=interferometric, purple=photographic |
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WDS 18355+2336 STT 359 (HD 171745) : NOTES
discov_num |
notes |
refcode |
STT 359 |
Spectrum composite; G9III+G7III. |
|
|
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic |
|
|
masses of 4.80 +/- 1.54, 4.11, and 1.85 Msun, respectively. |
Mlk2012 |
REFERENCES
refcode |
metd |
author |
reference |
Mlk2012 |
not - |
Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. |
2012A&A...546A..69M |
Mlk2012 |
|
A&A 546, A69, 2012 |
|
Sca2009a |
S j |
Scardia, M., Prieur, J.-L., Pansecchi, L., Argyle, R.W., & Sala, M. |
2009AN....330...55S |
Sca2009a |
+orb |
AN 330, 55, 2009 |
|
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 |
18355+2336 |
STT 359 |
|
2007 |
252 |
5 |
0.8 |
6.35 |
6.62 |
G9III-IV |
NOD |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2009 |
255 |
5 |
0.7 |
6.35 |
6.62 |
G9III-IV |
NOD |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2010 |
259 |
6 |
0.7 |
6.35 |
6.62 |
G9III-IV |
NOD |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2013 |
265 |
4 |
0.8 |
6.35 |
6.62 |
G9III-IV |
NO |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2015 |
235 |
6 |
0.7 |
6.35 |
6.62 |
G9III-IV |
NO |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2017 |
239 |
6 |
0.8 |
6.35 |
6.62 |
G9III-IV |
NO |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2018 |
242 |
4 |
0.7 |
6.35 |
6.62 |
G9III-IV |
NO |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2019 |
241 |
3 |
0.7 |
6.35 |
6.62 |
G9III-IV |
NO |
183530.40+233619.9 |
18355+2336 |
STT 359 |
|
2021 |
246 |
5 |
0.8 |
6.35 |
6.62 |
G9III+ |
NO |
183530.40+233619.9 |
If you need more information about this double, apply for a
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WDS 18355+2336 STT 359 (HD 171745) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18355+2336 STT 359 (HD 171745) : MEASURES
No records found.
WDS 18355+2336 (HD 171745) : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
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WDS 18355+2336 (HD 171745) : ALADIN DSS IMAGE @ 18h 35m 30.40s +23° 36' 19.9"
WDS 18355+2336 STT 359 (HD 171745) : NEIGHBORHOODS
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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 |
|
18355+2336 |
STT 359 |
|
5 |
0.8 |
|
Show |
|
18361+2344 |
HDS2639 |
|
137 |
0.1 |
12 |
Show |
|
18349+2357 |
POU3435 |
|
259 |
13.5 |
23 |
Show |
|
18369+2323 |
TDT 958 |
|
255 |
0.4 |
24 |
Show |
|
18368+2320 |
POU3438 |
AB |
359 |
8.5 |
24 |
Show |
|
18368+2320 |
POU3439 |
AC |
56 |
15.2 |
24 |
Show |
|
18357+2403 |
POU3436 |
|
167 |
4.9 |
26 |
Show |
|
18370+2358 |
POU3440 |
AB |
105 |
6.6 |
30 |
Show |
|
18370+2358 |
CVE 10 |
AC |
348 |
5.7 |
30 |
Show |
|
18336+2321 |
POU3430 |
|
178 |
7.2 |
31 |
Show |
|
18371+2358 |
CVE 11 |
|
108 |
11.7 |
32 |
Show |
|
18330+2337 |
POU3428 |
|
257 |
14.6 |
34 |
Show |
|
18332+2326 |
POU3429 |
|
3 |
11.3 |
35 |
Show |
|
18330+2334 |
KPP 418 |
|
87 |
3.8 |
35 |
Show |
|
18351+2302 |
TDT 948 |
|
222 |
2.5 |
36 |
Show |
|
18370+2409 |
TDT 959 |
|
180 |
0.5 |
39 |
Show |
|
18327+2326 |
POU3424 |
|
273 |
9.1 |
40 |
Show |
|
18378+2310 |
POU3443 |
|
43 |
2.8 |
41 |
Show |
|
18327+2350 |
POU3425 |
|
214 |
13.1 |
41 |
Show |
|
18343+2258 |
TDT 938 |
|
67 |
0.9 |
42 |
Show |
|
18352+2419 |
KPP3331 |
|
5 |
2.5 |
43 |
Show |
|
18339+2300 |
POU3431 |
|
342 |
6.8 |
44 |
Show |
|
18324+2325 |
POU3422 |
|
177 |
12.0 |
45 |
Show |
|
18346+2422 |
POU3432 |
|
170 |
8.6 |
45 |
Show |
|
18377+2409 |
POU3444 |
|
349 |
5.3 |
45 |
Show |
|
18323+2350 |
POU3421 |
|
165 |
4.2 |
46 |
Show |
|
18334+2301 |
J 463 |
AB |
224 |
1.9 |
47 |
Show |
|
18334+2301 |
J 463 |
AB,C |
97 |
23.8 |
47 |
Show |
|
18322+2350 |
POU3420 |
|
355 |
2.8 |
48 |
Show |
|
18321+2342 |
POU3418 |
|
129 |
7.0 |
48 |
Show |
|
18390+2337 |
POU3453 |
|
102 |
10.1 |
48 |
Show |
|
18389+2324 |
TDT 972 |
|
47 |
0.8 |
49 |
Show |
|
18392+2341 |
POU3454 |
|
274 |
13.3 |
52 |
Show |
|
18319+2351 |
POU3417 |
|
125 |
9.3 |
52 |
Show |
|
18388+2309 |
POU3451 |
|
310 |
7.4 |
53 |
Show |
|
18354+2243 |
SLE 212 |
|
255 |
14.3 |
54 |
Show |
|
18318+2321 |
TDT 928 |
|
167 |
0.6 |
54 |
Show |
|
18330+2420 |
POU3427 |
|
81 |
6.8 |
56 |
Show |
|
18379+2421 |
POU3447 |
|
222 |
14.0 |
56 |
Show |
|
18350+2434 |
TDT 946 |
|
91 |
0.8 |
58 |
Show |
|
18317+2310 |
HU 321 |
AB |
21 |
20.6 |
59 |
Show |
|
18317+2310 |
HU 321 |
AC |
342 |
74.4 |
59 |
Show |
|
18396+2356 |
TDT 980 |
|
102 |
0.3 |
59 |
Show |
|
18362+2437 |
POU3437 |
|
284 |
5.0 |
62 |
Show |
|
18373+2433 |
POU3441 |
|
211 |
11.2 |
62 |
Show |
|
18401+2335 |
POU3461 |
|
244 |
3.1 |
63 |
Show |
|
18315+2405 |
POU3414 |
|
260 |
17.8 |
63 |
Show |
|
18400+2324 |
POU3460 |
|
120 |
11.5 |
63 |
Show |
|
18386+2422 |
POU3450 |
|
161 |
7.6 |
63 |
Show |
|
18387+2422 |
POU3452 |
|
139 |
16.1 |
64 |
Show |
|
18401+2351 |
POU3462 |
BC |
171 |
10.8 |
65 |
|
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WDS 18355+2336 : COMPONENTS
18355+2336 A
Componente originario normalizzato |
AB |
|
Name |
HD 171745 |
|
Coord arcsec 2000 |
183530.40+233619.9 |
|
Mag |
6.35 |
|
Spectral class |
G9III (yellow) |
|
PmRA |
5.00 |
|
PmDE |
3.0 |
|
SAO |
86224 |
|
HIP |
91139 |
|
Tycho2 |
2107-00474-1 |
|
HD |
171745 |
|
HR |
6980 |
|
GC |
25407 |
|
BD |
BD+23 3385 |
|
Tycho2 |
2107-00474-1 |
|
Pflag |
|
|
RAmdeg |
278.87667351 |
|
DEmdeg |
23.60561882 |
|
PmRA |
5.2 |
|
PmDE |
2.8 |
|
E RAmdeg |
4 |
|
E DEmdeg |
3 |
|
E pmRA |
1.0 |
|
E pmDE |
0.9 |
|
EpRAm |
1991.20 |
|
EpDEm |
1991.60 |
|
Num |
13 |
|
Q RAmdeg |
1.2 |
|
Q DEmdeg |
0.7 |
|
Q pmRA |
1.2 |
|
Q pmDE |
0.8 |
|
BTmag |
6.977 |
|
E BTmag |
0.015 |
|
VTmag |
5.803 |
|
E VTmag |
0.009 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
91139 |
|
CCDM |
AB |
|
RAdeg |
278.87666000 |
|
DEdeg |
23.60561222 |
|
EpRA 1990 |
1.46 |
|
EpDE 1990 |
1.76 |
|
E RAdeg |
3.5 |
|
E DEdeg |
3.3 |
|
Posflg |
P |
|
Corr |
0.0 |
|
SAO |
86224 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
0.0002 |
|
DE1950 |
|
|
PmDE1950 |
0.006 |
|
Vmag |
5.8 |
|
SpType |
K0 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
25407 |
|
DM |
BD+23 3385 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
171745 |
|
M HD |
0 |
|
GC |
25407 |
|
RA1950rad |
4.85822898 |
|
DE1950rad |
0.41126707 |
|
PmRA2000 |
0.0003 |
|
PmDE2000 |
0.005 |
|
Catalog |
H |
|
HIP |
91139 |
|
Proxy |
H |
|
RAhms |
18 35 30.39 |
|
DEdms |
+23 36 19.9 |
|
Vmag |
5.62 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
278.877 |
|
DEdeg |
23.6055 |
|
AstroRef |
A |
|
Plx |
6.7 |
|
CCDM |
18355+2336 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
2 |
|
MultFlag |
C |
|
Source |
|
|
Qual |
A |
|
M HIP |
AB |
|
Theta |
8 |
|
Rho |
0.684 |
|
HD |
171745 |
|
BD |
BD+23 3385 |
|
CD |
|
|
CP |
|
|
Dm number |
+23 3385 |
|
VIred |
0.99 |
|
SpType |
G8III |
|
R SpType |
|
|
Coord arcsec 2000 |
183530.39+233619.9 |
|
HIP |
91139 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
2 |
|
RArad |
4.8673156653 |
|
DErad |
0.411994189 |
|
Plx |
6.93 |
|
PmRA |
3.04 |
|
PmDE |
0.56 |
|
E RArad |
0.25 |
|
E DErad |
0.63 |
|
E Plx |
0.68 |
|
E pmRA |
0.35 |
|
E pmDE |
1 |
|
Hpmag |
5.7882 |
|
E Hpmag |
0.0006 |
|
SHp |
0.007 |
|
VA |
0 |
|
BV |
1.015 |
|
E BV |
0.004 |
|
VI |
0.99 |
|
Ccdm |
18355+2336 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
0.40 |
|
DDEs |
20.6 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
2 |
|
Vmag |
6.4 |
|
Sp |
K0 |
|
PmNote |
* |
|
PmRA |
4 |
|
PmDE |
16 |
|
Dm number |
+23 3385 |
|
Cat1 |
BD |
|
Name2 |
+23 1773 |
|
Cat2 |
AGK2/3 |
|
HD |
171745 |
|
M HD |
|
|
ADS BDS |
A11479 |
|
M ADS BDS |
|
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N IDS |
|
|
IDS |
18314N2331A |
|
HIC |
91139 |
|
18355+2336 B
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
183530.40+233620.7 |
|
Mag |
6.62 |
|
PmRA |
5.00 |
|
PmDE |
3.0 |
|
Calc delta mag |
0.27 |
|
Calc coord |
yes |
|
Ccdm |
18355+2336 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
* |
|
Note2 |
|
|
Discov num |
STT 359 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1849 |
|
Theta |
|
|
Rho |
|
|
Obs |
99 |
|
Vmag |
6.7 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11479 |
|
M ADS BDS |
|
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N IDS |
|
|
IDS |
18314N2331B |
|
HIC |
91139 |
|