16544-4150 SNA 55 AC
16h 54m 25.95s -41° 49' 55.8" P.A. 40.00 sep 1.1 mag 6.93,12.92 Sp O8IV
Coord 2000 |
16544-4150 |
|
Discov num |
SNA 55 |
|
Comp |
AC |
|
Coord arcsec 2000 |
16 54 25.95 -41 49 55.8 |
|
Date first |
2011 |
|
Date last |
2011 |
|
Obs |
1 |
|
Pa first |
40 |
|
Pa last |
40.4 |
|
P.A. Now (θ) |
40.4° |
|
Sep first |
1.1 |
|
Sep last |
1.13 |
|
Sep. Now (ρ) |
1.13" |
|
Mag pri |
6.93 |
|
Mag sec |
12.92 |
|
delta mag (ΔM) |
5.99 |
|
Spectral class |
O8IV (blue) |
|
Pri motion ra |
-015 |
|
Sec motion ra |
|
|
Pri motion dec |
-009 |
|
Sec motion dec |
|
|
Notes |
N
V
K
(See Notes, Proper motion indicates physical, 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
This double is physical.
16544-4150 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 326331 |
|
16 54 26 -41 49 56 |
HJ 4893 AB |
2022 |
11 |
52 |
7.3 |
7.44 |
9.60 |
2.16 |
|
|
Show |
|
|
16 54 26 -41 49 56 |
SNA 55 AC |
2011 |
1 |
40 |
1.1 |
6.93 |
12.92 |
5.99 |
|
<=== |
Show |
|
|
16 54 26 -41 49 56 |
SNA 55 AD |
2015 |
2 |
326 |
3.4 |
6.93 |
12.63 |
5.70 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Scorpius |
|
Tycho2 |
7876-02319-1 |
|
Gaia DR2 |
5966509267005564288 |
|
HD |
326331 |
|
WDS 16544-4150 SNA 55 AC : NOTES
discov_num |
notes |
refcode |
SNA 55 |
Reported as a broad-line fast rotator with line profile variability |
|
|
(Sana at al. 2008b) and as SB2, we detected two visual companions at |
Sna2008b |
|
1.1 and 3.4". The 7.3" AB companion reported by Mason et al. (1998) |
Msn1998a |
|
may lie outside our FOV. See further discussion by Sana et al. (2014) |
Sna2014 |
REFERENCES
refcode |
metd |
author |
reference |
Msn1998a |
Sc j |
Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G., |
1998AJ....115..821M |
Msn1998a |
|
ten Brummelaar, T.A., & McAlister, H.A. |
|
Msn1998a |
|
AJ 115, 821, 1998 |
|
Sna2008b |
not - |
Sana, H., Naze, Y., O'Donnell, B., Rauw, G., & Gosset, E. |
2008NewAst.13..202S |
Sna2008b |
|
New Astron. 13, 202, 2008 |
|
Sna2014 |
Kv j |
Sana, H., LeBouquin, J.-B., Lacour, S., Berger, J.-P., Duvert, G., Gauchet, L., |
2014ApJS..215...15S |
Sna2014 |
+A |
Norris, B., Olofsson, J., Pickel, D., Zins, G., Absil, O., de Koter, A., |
|
Sna2014 |
|
Kratter, K., Schnurr, O., & Zinnecker, H. |
|
Sna2014 |
|
ApJS 215, 15, 2014 |
|
Sna2014 |
|
(NACO companions in Table 6 assumed physical if quoted probability of spurious |
|
Sna2014 |
|
detection <10%, optical if >90%, otherwise indeterminate) |
|
DISCOVERER
idgroup |
discov |
author |
1 |
HJ |
Herschel, J.F.W. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
16544-4150 |
SNA 55 |
AC |
2011 |
1 |
40 |
1.1 |
6.93 |
12.92 |
O8IV |
V K |
165425.95-414955.8 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 16544-4150 SNA 55 AC : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 16544-4150 SNA 55 AC : MEASURES
No records found.
WDS 16544-4150 : 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 16544-4150 : ALADIN DSS IMAGE @ 16h 54m 25.95s -41° 49' 55.8"
WDS 16544-4150 SNA 55 AC : 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 |
|
16544-4150 |
HJ 4893 |
AB |
52 |
7.3 |
|
Show |
|
16544-4150 |
SNA 55 |
AC |
40 |
1.1 |
|
Show |
|
16544-4150 |
SNA 55 |
AD |
326 |
3.4 |
|
Show |
|
16543-4150 |
B 1835 |
|
256 |
3.5 |
2 |
Show |
|
16543-4149 |
B 1834 |
CD |
313 |
4.6 |
2 |
Show |
|
16543-4149 |
BRT 929 |
AB |
197 |
3.9 |
2 |
Show |
|
16543-4151 |
CPO 500 |
|
313 |
3.7 |
2 |
Show |
|
16545-4148 |
SNA 56 |
Aa,Ab |
63 |
0.0 |
2 |
Show |
|
16545-4148 |
SNA 56 |
AB |
187 |
3.2 |
2 |
Show |
|
16545-4148 |
SNA 56 |
AC |
141 |
3.5 |
2 |
Show |
|
16546-4150 |
BRT 934 |
|
266 |
3.0 |
2 |
Show |
|
16542-4150 |
SEE 300 |
DE |
265 |
7.8 |
3 |
Show |
|
16542-4151 |
SNA 54 |
Ba,Bb |
348 |
0.0 |
3 |
Show |
|
16542-4151 |
SNA 54 |
BC |
142 |
1.0 |
3 |
Show |
|
16542-4151 |
WFC 183 |
AB |
35 |
31.0 |
3 |
Show |
|
16542-4150 |
CHR 252 |
Aa,Ab |
237 |
0.1 |
3 |
Show |
|
16542-4150 |
SEE 297 |
AB |
130 |
13.2 |
3 |
Show |
|
16542-4150 |
SEE 297 |
AC |
122 |
23.1 |
3 |
Show |
|
16545-4153 |
SEE 302 |
AB |
33 |
3.2 |
4 |
Show |
|
16545-4153 |
SGH 1 |
AC |
277 |
4.1 |
4 |
Show |
|
16541-4151 |
SEE 295 |
|
14 |
5.9 |
4 |
Show |
|
16540-4148 |
B 1833 |
AB |
75 |
0.5 |
5 |
Show |
|
16540-4148 |
B 1833 |
AC |
99 |
5.4 |
5 |
Show |
|
16540-4148 |
SEE 293 |
AD |
127 |
19.1 |
5 |
Show |
|
16540-4148 |
SEE 293 |
AE |
281 |
20.5 |
5 |
Show |
|
16540-4148 |
JC 23 |
AF |
19 |
56.7 |
5 |
Show |
|
16540-4148 |
SNA 51 |
Aa,Ab |
153 |
0.0 |
5 |
Show |
|
16540-4148 |
SEE 294 |
FG |
47 |
6.7 |
5 |
Show |
|
16540-4148 |
HJ 4892 |
FH |
300 |
8.8 |
5 |
Show |
|
16540-4148 |
SNA 51 |
Fa,Fb |
54 |
0.0 |
5 |
Show |
|
16539-4153 |
SNA 49 |
Aa,Ab |
345 |
0.1 |
7 |
Show |
|
16539-4153 |
SNA 49 |
AB |
18 |
2.2 |
7 |
Show |
|
16539-4153 |
SNA 49 |
AC |
332 |
2.9 |
7 |
Show |
|
16539-4153 |
SNA 49 |
AD |
145 |
5.1 |
7 |
Show |
|
16539-4153 |
SNA 49 |
AE |
65 |
5.3 |
7 |
Show |
|
16539-4153 |
SNA 49 |
AF |
175 |
7.2 |
7 |
Show |
|
16542-4146 |
SEE 298 |
AB |
286 |
6.2 |
7 |
Show |
|
16542-4146 |
SEE 298 |
AC |
144 |
17.7 |
7 |
Show |
|
16540-4143 |
SEE 296 |
AC |
240 |
19.9 |
9 |
Show |
|
16540-4143 |
SNA 50 |
AB |
213 |
4.3 |
9 |
Show |
|
16542-4139 |
SNA 53 |
Aa,Ab |
1 |
0.0 |
12 |
Show |
|
16542-4139 |
SNA 53 |
AB |
313 |
3.2 |
12 |
Show |
|
16542-4139 |
SNA 53 |
AC |
22 |
5.1 |
12 |
Show |
|
16538-4140 |
CPO 498 |
|
69 |
4.5 |
12 |
Show |
|
16548-4202 |
RST1907 |
|
190 |
2.0 |
13 |
Show |
|
16551-4205 |
SEE 303 |
|
164 |
21.8 |
18 |
Show |
|
16528-4147 |
SNA 47 |
|
91 |
0.0 |
19 |
Show |
|
16535-4207 |
SNA 48 |
|
64 |
0.0 |
21 |
Show |
|
16523-4136 |
B 1832 |
AB |
234 |
4.1 |
28 |
Show |
|
16523-4136 |
B 1832 |
AC |
143 |
5.2 |
28 |
Show |
|
16547-4121 |
TDS 843 |
|
91 |
1.1 |
30 |
|
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WDS 16544-4150 : COMPONENTS
|
A |
B |
C |
B |
pa=43.4°
sep=6.24"
| |
C |
pa=32.4°
sep=1.02"
| pa=225.6°
sep=5.25"
| |
D |
pa=333.1°
sep=3.15"
| pa=253.3°
sep=5.97"
| pa=314.7°
sep=2.78"
|
16544-4150 A
Name |
HD 326331 |
|
Coord arcsec 2000 |
165425.95-414955.8 |
|
Mag |
7.44 |
|
Spectral class |
B (blue-white) |
|
PmRA |
-15.00 |
|
PmDE |
-9.0 |
|
Tycho2 |
7876-02319-1 |
|
HD |
326331 |
|
Tycho2 |
7876-02319-1 |
|
Pflag |
|
|
RAmdeg |
253.60815874 |
|
DEmdeg |
-41.83219245 |
|
PmRA |
-16.2 |
|
PmDE |
-13.3 |
|
E RAmdeg |
6 |
|
E DEmdeg |
6 |
|
E pmRA |
1.6 |
|
E pmDE |
1.3 |
|
EpRAm |
1991.31 |
|
EpDEm |
1991.05 |
|
Num |
5 |
|
Q RAmdeg |
5.0 |
|
Q DEmdeg |
3.7 |
|
Q pmRA |
4.8 |
|
Q pmDE |
3.6 |
|
BTmag |
7.574 |
|
E BTmag |
0.016 |
|
VTmag |
7.440 |
|
E VTmag |
0.012 |
|
Prox |
829 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
253.60820833 |
|
DEdeg |
-41.83216222 |
|
EpRA 1990 |
1.65 |
|
EpDE 1990 |
1.65 |
|
E RAdeg |
5.6 |
|
E DEdeg |
5.8 |
|
Posflg |
|
|
Corr |
0.0 |
|
Ccdm |
16544-4150 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
1.94 |
|
DDEs |
3.5 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
2 |
|
Vmag |
8.0 |
|
Sp |
B |
|
PmNote |
* |
|
PmRA |
-9 |
|
PmDE |
-3 |
|
Dm number |
-4111044 |
|
Cat1 |
CD |
|
Name2 |
227393 |
|
Cat2 |
SAO |
|
HD |
|
|
M HD |
|
|
ADS BDS |
|
|
M ADS BDS |
|
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N IDS |
|
|
IDS |
16474S4140A |
|
HIC |
|
|
16544-4150 B
Coord arcsec 2000 |
165426.33-414951.3 |
|
Mag |
9.6 |
|
PmRA |
-4.00 |
|
PmDE |
0.0 |
|
Calc delta mag |
2.16 |
|
Calc coord |
yes |
|
Ccdm |
16544-4150 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
HJ 4893 |
|
DRAs |
2.52 |
|
DDEs |
7.2 |
|
R dRAs |
10 |
|
Year |
1897 |
|
Theta |
052 |
|
Rho |
7.3 |
|
Obs |
3 |
|
Vmag |
10.0 |
|
Sp |
|
|
PmNote |
* |
|
PmRA |
6 |
|
PmDE |
-20 |
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
227394 |
|
Cat2 |
SAO |
|
HD |
|
|
M HD |
|
|
ADS BDS |
|
|
M ADS BDS |
|
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N IDS |
|
|
IDS |
16474S4140B |
|
HIC |
|
|
16544-4150 C
Coord arcsec 2000 |
165426.00-414954.9 |
|
Mag |
12.92 |
|
Calc delta mag |
5.48 |
|
Calc coord |
yes |
|
16544-4150 D
Coord arcsec 2000 |
165425.82-414953.0 |
|
Mag |
12.63 |
|
Calc delta mag |
5.19 |
|
Calc coord |
yes |
|