18346-2734 TOK 422 Aa,Ab
18h 34m 37.64s -27° 33' 58.3" P.A. 102.00 sep 0.1 mag 9.80,11.00 Sp G3/5V dist. 66.58 pc (217.18 l.y.)
Coord 2000 |
18346-2734 |
|
Discov num |
TOK 422 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
18 34 37.64 -27 33 58.3 |
|
Date first |
2014 |
|
Date last |
2021 |
|
Obs |
8 |
|
Pa first |
102 |
|
Pa last |
102.4 |
|
P.A. Now (θ) |
102.4° |
|
Sep first |
0.1 |
|
Sep last |
0.109 |
|
Sep. Now (ρ) |
0.109" |
|
Mag pri |
9.80 |
|
Mag sec |
11.00 |
|
delta mag (ΔM) |
1.2 |
|
Spectral class |
G3/5V (yellow) |
|
Pri motion ra |
+001 |
|
Sec motion ra |
|
|
Pri motion dec |
+016 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
18346-2734 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
186996 |
18 34 38 -27 33 58 |
TOK 422 Aa,Ab |
2021 |
8 |
102 |
0.1 |
9.80 |
11.00 |
1.20 |
Y |
<=== |
Show |
|
186996 |
18 34 38 -27 33 58 |
I 1026 AB |
2015 |
7 |
41 |
9.0 |
8.90 |
13.00 |
4.10 |
|
|
Show |
HD 171226 |
186996 |
18 34 38 -27 33 58 |
I 1026 A,CD |
1999 |
4 |
145 |
36.1 |
8.90 |
11.00 |
2.10 |
|
|
Show |
|
|
18 34 39 -27 34 28 |
I 1027 CD |
2015 |
4 |
69 |
1.9 |
11.01 |
12.00 |
0.99 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Sagittarius |
|
SAO |
186996 |
|
HIP |
91075 |
|
Tycho2 |
6866-01975-1 |
|
Gaia DR2 |
4048716827938618240 |
|
HD |
171226 |
|
CD |
CD-2712977 |
|
CP |
CP-27 6460 |
|
Distance |
66.58 |
|
Distance ly |
217.18 |
|
ORBITAL ELEMENTS
Period (P) | 8.55y | ± 0.34 |
Periastron (T) | 2016.56y | ± 0.2 |
Semi-major axis (a) | 0.06a | ± 0.002 |
Eccentricity (e) | 0.84 | ± 0.036 |
Inclination (i) | 100.6° | ± 2.2 |
Longitude of periastron (ω) | 186.5° | ± 12.3 |
Node (Ω) | 104.8° | ± 2.1 |
Notes | n | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
114.0 |
0.031 |
2001 |
108.0 |
0.074 |
2002 |
105.9 |
0.097 |
2003 |
104.5 |
0.108 |
2004 |
103.3 |
0.109 |
2005 |
101.9 |
0.100 |
2006 |
100.1 |
0.081 |
2007 |
96.3 |
0.048 |
2008 |
285.2 |
0.010 |
2009 |
110.0 |
0.054 |
2010 |
106.9 |
0.086 |
2011 |
105.3 |
0.104 |
2012 |
104.0 |
0.110 |
2013 |
102.7 |
0.106 |
2014 |
101.2 |
0.093 |
2015 |
98.8 |
0.068 |
2016 |
90.8 |
0.025 |
2017 |
116.1 |
0.024 |
2018 |
108.3 |
0.071 |
2019 |
106.1 |
0.096 |
2020 |
104.7 |
0.108 |
2021 |
103.4 |
0.109 |
2022 |
102.0 |
0.102 |
2023 |
100.3 |
0.083 |
2024 |
96.9 |
0.052 |
2025 |
308.3 |
0.006 |
2026 |
110.6 |
0.049 |
2027 |
107.1 |
0.084 |
2028 |
105.4 |
0.102 |
2029 |
104.1 |
0.110 |
2030 |
102.8 |
0.107 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 18346-2734 TOK 422 Aa,Ab : NOTES
discov_num |
notes |
refcode |
I 1026 |
AB + TOK 422Aa,Ab: HIP 91075 was noted as a double-lined binary by |
|
|
the GCS (one observation only). The separation of 86mas implies a |
|
|
period of ~10yr, while the double-lined observation matches the |
|
|
moderate magnitude difference (estimated masses 1.04 and 0.77 Msun. |
|
|
The star is an X-ray source, so a future combined orbit could |
|
|
determine masses for testing evolutionary models of young stars. The |
|
|
sky around the object is quite crowded; the 9" companion I 1026 is |
|
|
optical (it moves too fast). |
Tok2015c |
I 1027 |
CD: CPD-27@6461. |
|
REFERENCES
refcode |
metd |
author |
reference |
Tok2015c |
orb+j |
Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. |
2015AJ....150...50T |
Tok2015c |
+St |
AJ 150, 50, 2015 (some measures corrected in Tok2017b) |
2017AJ....154..110T |
Tok2021f |
orb - |
Tokovinin, A. |
2021IAUDS.204....1T |
Tok2021f |
|
Inf. Circ. 204, 1, 2021 |
|
DISCOVERER
idgroup |
discov |
author |
1 |
I |
Innes, R.T.A. |
5 |
I |
MNRAS 57, 533, 1897 (data also in I__1897b, |
5 |
I |
I__1897c) |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
18346-2734 |
TOK 422 |
Aa,Ab |
2014 |
1 |
102 |
0.1 |
9.80 |
11.00 |
G3/5V |
N |
183437.64-273358.3 |
18346-2734 |
TOK 422 |
Aa,Ab |
2015 |
3 |
95 |
0.1 |
9.80 |
11.00 |
G3/5V |
N |
183437.64-273358.3 |
18346-2734 |
TOK 422 |
Aa,Ab |
2018 |
5 |
107 |
0.1 |
9.80 |
11.00 |
G3/5V |
N |
183437.64-273358.3 |
18346-2734 |
TOK 422 |
Aa,Ab |
2019 |
6 |
106 |
0.1 |
9.80 |
11.00 |
G3/5V |
N |
183437.64-273358.3 |
18346-2734 |
TOK 422 |
Aa,Ab |
2020 |
7 |
103 |
0.1 |
9.80 |
11.00 |
G3/5V |
N |
183437.64-273358.3 |
18346-2734 |
TOK 422 |
Aa,Ab |
2021 |
8 |
102 |
0.1 |
9.80 |
11.00 |
G3/5V |
N |
183437.64-273358.3 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18346-2734 TOK 422 Aa,Ab : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18346-2734 TOK 422 Aa,Ab : MEASURES
No records found.
WDS 18346-2734 : 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 18346-2734 : ALADIN DSS IMAGE @ 18h 34m 37.64s -27° 33' 58.3"
WDS 18346-2734 TOK 422 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 |
|
18346-2734 |
I 1026 |
AB |
41 |
9.0 |
|
Show |
|
18346-2734 |
I 1026 |
A,CD |
145 |
36.1 |
|
Show |
|
18346-2734 |
TOK 422 |
Aa,Ab |
102 |
0.1 |
|
Show |
|
18346-2734 |
I 1027 |
CD |
69 |
1.9 |
1 |
Show |
|
18328-2747 |
KPP 417 |
|
57 |
5.0 |
28 |
Show |
|
18325-2753 |
SKF2131 |
|
47 |
4.7 |
35 |
Show |
|
18311-2738 |
J 1632 |
|
165 |
5.3 |
48 |
Show |
|
18312-2757 |
RST2060 |
Ba,Bb |
8 |
0.6 |
51 |
Show |
|
18389-2736 |
RST2069 |
|
123 |
1.7 |
57 |
Show |
|
18335-2832 |
BRT3073 |
|
281 |
3.9 |
60 |
Show |
|
18307-2700 |
RST2059 |
|
5 |
1.9 |
63 |
Show |
|
18348-2837 |
B 395 |
|
278 |
1.3 |
64 |
Show |
|
18319-2831 |
RST2062 |
|
3 |
0.8 |
68 |
Show |
|
18322-2630 |
SKF2066 |
|
282 |
17.5 |
72 |
Show |
|
18400-2743 |
SKF2132 |
|
237 |
12.4 |
73 |
Show |
|
18296-2803 |
SKF2128 |
|
291 |
4.8 |
74 |
Show |
|
18359-2849 |
DOO 71 |
CD |
34 |
4.3 |
76 |
Show |
|
18359-2849 |
HJ 5051 |
AB |
237 |
9.3 |
77 |
Show |
|
18359-2849 |
HJ 5051 |
AC |
296 |
91.6 |
77 |
Show |
|
18286-2717 |
J 2214 |
|
119 |
5.3 |
78 |
Show |
|
18356-2617 |
OCC9050 |
Ba,Bb |
-1 |
0.0 |
79 |
Show |
|
18356-2617 |
B 396 |
AB |
218 |
1.7 |
79 |
Show |
|
18289-2716 |
OCC 185 |
|
-1 |
0.1 |
79 |
Show |
|
18396-2817 |
J 1596 |
|
105 |
8.2 |
79 |
Show |
|
18368-2617 |
RST3187 |
AB |
201 |
0.1 |
82 |
Show |
|
18368-2617 |
RST3187 |
AC |
41 |
12.7 |
82 |
Show |
|
18354-2607 |
TDT 949 |
|
91 |
0.7 |
88 |
Show |
|
18371-2612 |
VVV 58 |
|
171 |
1.7 |
90 |
Show |
|
18292-2640 |
B 391 |
|
65 |
0.2 |
91 |
Show |
|
18305-2848 |
HDS2624 |
|
230 |
0.1 |
92 |
Show |
|
18386-2850 |
TDT 971 |
|
163 |
0.5 |
93 |
Show |
|
18401-2638 |
B 397 |
|
193 |
1.2 |
93 |
Show |
|
18329-2906 |
SKF2130 |
|
134 |
3.0 |
96 |
Show |
|
18275-2725 |
FIN 267 |
|
343 |
4.9 |
96 |
Show |
|
18290-2635 |
WNO 6 |
|
182 |
41.8 |
97 |
Show |
|
18280-2651 |
I 1366 |
|
225 |
0.4 |
99 |
Show |
|
18281-2645 |
HDS2615 |
AB |
186 |
0.3 |
100 |
Show |
|
18281-2645 |
ARY 126 |
AC |
135 |
54.1 |
100 |
Show |
|
18277-2638 |
BU 133 |
|
230 |
0.6 |
108 |
Show |
|
18264-2749 |
B 2865 |
|
298 |
11.4 |
111 |
Show |
|
18261-2740 |
J 2211 |
AB |
49 |
5.7 |
115 |
Show |
|
18261-2740 |
J 2211 |
AC |
196 |
11.4 |
115 |
Show |
|
18279-2848 |
RST2056 |
|
27 |
2.6 |
116 |
Show |
|
18259-2752 |
RST2051 |
|
116 |
1.4 |
118 |
Show |
|
18257-2726 |
OCC 186 |
|
-1 |
0.1 |
119 |
Show |
|
18317-2541 |
OCC 264 |
|
-1 |
0.1 |
120 |
Show |
|
18259-2713 |
RST2050 |
|
77 |
2.0 |
120 |
Show |
|
18256-2724 |
COO 225 |
AB |
359 |
5.9 |
121 |
Show |
|
18256-2724 |
SIN 109 |
AC |
89 |
69.0 |
121 |
Show |
|
18292-2916 |
B 2450 |
|
347 |
14.0 |
125 |
Show |
|
18398-2920 |
RSS 487 |
|
303 |
11.5 |
127 |
|
|
WDS 18346-2734 : COMPONENTS
|
A |
Ab |
B |
C |
Ab |
pa=103.9°
sep=0.10"
| |
B |
pa=37.4°
sep=8.58"
| pa=36.8°
sep=8.54"
| |
C |
pa=144.8°
sep=35.98"
| pa=144.9°
sep=35.91"
| pa=156.8°
sep=39.40"
| |
D |
pa=142.1°
sep=36.38"
| pa=142.2°
sep=36.30"
| pa=154.3°
sep=39.44"
| pa=66.6°
sep=1.74"
|
18346-2734 A
Name |
HD 171226 |
|
Coord arcsec 2000 |
183437.64-273358.3 |
|
Mag |
8.9 |
|
Spectral class |
G3/5V (yellow) |
|
PmRA |
1.00 |
|
PmDE |
16.0 |
|
SAO |
186996 |
|
HIP |
91075 |
|
Tycho2 |
6866-01975-1 |
|
HD |
171226 |
|
ADS |
11452 |
|
CD |
CD-2712977 |
|
CP |
CP-27 6460 |
|
Tycho2 |
6866-01975-1 |
|
Pflag |
|
|
RAmdeg |
278.65681708 |
|
DEmdeg |
-27.56617578 |
|
PmRA |
1.3 |
|
PmDE |
15.0 |
|
E RAmdeg |
11 |
|
E DEmdeg |
13 |
|
E pmRA |
1.6 |
|
E pmDE |
1.6 |
|
EpRAm |
1990.01 |
|
EpDEm |
1989.14 |
|
Num |
7 |
|
Q RAmdeg |
0.7 |
|
Q DEmdeg |
1.5 |
|
Q pmRA |
0.8 |
|
Q pmDE |
1.5 |
|
BTmag |
9.637 |
|
E BTmag |
0.026 |
|
VTmag |
8.900 |
|
E VTmag |
0.019 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
91075 |
|
CCDM |
|
|
RAdeg |
278.65681361 |
|
DEdeg |
-27.56621389 |
|
EpRA 1990 |
1.68 |
|
EpDE 1990 |
1.44 |
|
E RAdeg |
11.9 |
|
E DEdeg |
14.3 |
|
Posflg |
|
|
Corr |
0.0 |
|
SAO |
186996 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
0.0008 |
|
DE1950 |
|
|
PmDE1950 |
0.005 |
|
Vmag |
8.6 |
|
SpType |
G0 |
|
Double code |
|
|
Source |
24 |
|
CatNum |
12059 |
|
DM |
CD-2712977 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
171226 |
|
M HD |
0 |
|
GC |
|
|
RA1950rad |
4.84978317 |
|
DE1950rad |
-0.48182379 |
|
PmRA2000 |
0.0007 |
|
PmDE2000 |
0.005 |
|
Catalog |
H |
|
HIP |
91075 |
|
Proxy |
|
|
RAhms |
18 34 37.64 |
|
DEdms |
-27 33 58.3 |
|
Vmag |
8.79 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
278.657 |
|
DEdeg |
-27.5662 |
|
AstroRef |
|
|
Plx |
16.22 |
|
CCDM |
18346-2734 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
1 |
|
MultFlag |
|
|
Source |
|
|
Qual |
S |
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
171226 |
|
BD |
|
|
CD |
CD-2712977 |
|
CP |
CP-27 6460 |
|
Dm number |
-2712977 |
|
VIred |
0.67 |
|
SpType |
G3/G5V |
|
R SpType |
|
|
Coord arcsec 2000 |
183437.64-273358.3 |
|
HIP |
91075 |
|
Sn |
5 |
|
So |
0 |
|
Nc |
1 |
|
RArad |
4.8634789769 |
|
DErad |
-0.4811210835 |
|
Plx |
15.02 |
|
PmRA |
-2.16 |
|
PmDE |
17.57 |
|
E RArad |
1.14 |
|
E DErad |
0.78 |
|
E Plx |
1.14 |
|
E pmRA |
1.55 |
|
E pmDE |
1.11 |
|
Hpmag |
8.9274 |
|
E Hpmag |
0.0024 |
|
SHp |
0.02 |
|
VA |
0 |
|
BV |
0.648 |
|
E BV |
0.028 |
|
VI |
0.71 |
|
Ccdm |
18346-2734 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
1.67 |
|
DDEs |
1.2 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
4 |
|
Vmag |
8.2 |
|
Sp |
G0 |
|
PmNote |
* |
|
PmRA |
11 |
|
PmDE |
5 |
|
Dm number |
-2712977 |
|
Cat1 |
CD |
|
Name2 |
186996 |
|
Cat2 |
SAO |
|
HD |
171226 |
|
M HD |
|
|
ADS BDS |
A11452 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18284S2739A |
|
HIC |
91075 |
|
18346-2734 Ab
Coord arcsec 2000 |
183437.65-273358.3 |
|
Mag |
11 |
|
Calc delta mag |
1.2 |
|
Calc coord |
yes |
|
18346-2734 B
Coord arcsec 2000 |
183438.03-273351.5 |
|
Mag |
13 |
|
PmRA |
11.00 |
|
PmDE |
11.0 |
|
Calc delta mag |
3.2 |
|
Calc coord |
yes |
|
Ccdm |
18346-2734 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
I 1026 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1927 |
|
Theta |
036 |
|
Rho |
9.1 |
|
Obs |
1 |
|
Vmag |
13.0 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11452 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18284S2739B |
|
HIC |
91075 |
|
18346-2734 C
Coord arcsec 2000 |
183439.20-273427.7 |
|
Mag |
11.01 |
|
Spectral class |
A2V (white) |
|
PmRA |
-9.00 |
|
PmDE |
-9.0 |
|
Calc delta mag |
1.21 |
|
Ccdm |
18346-2734 |
|
RComp |
|
|
Comp |
C |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
|
|
Vmag |
11.3 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
-27 6461 |
|
Cat2 |
CPD |
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11453 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18284S2739A |
|
HIC |
|
|
18346-2734 D
Coord arcsec 2000 |
183439.32-273427.0 |
|
Mag |
12 |
|
Calc delta mag |
2.2 |
|
Calc coord |
yes |
|
Ccdm |
18346-2734 |
|
RComp |
C |
|
Comp |
D |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
I 1027 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1927 |
|
Theta |
069 |
|
Rho |
2.0 |
|
Obs |
1 |
|
Vmag |
12.0 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11453 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18284S2739B |
|
HIC |
|
|