18187-1837 BU 639 AB
18h 18m 43.26s -18° 37' 10.8" P.A. 136.00 sep 0.5 mag 7.20,8.20 Sp B0Ib
Coord 2000 |
18187-1837 |
|
Discov num |
BU 639 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 18 43.26 -18 37 10.8 |
|
Date first |
1878 |
|
Date last |
2017 |
|
Obs |
32 |
|
Pa first |
155 |
|
Pa last |
136 |
|
P.A. Now (θ) |
136° |
|
Sep first |
0.6 |
|
Sep last |
0.467 |
|
Sep. Now (ρ) |
0.467" |
|
Mag pri |
7.20 |
|
Mag sec |
8.20 |
|
delta mag (ΔM) |
1 |
|
Spectral class |
B0Ib (blue-white) |
|
Pri motion ra |
+004 |
|
Sec motion ra |
|
|
Pri motion dec |
-004 |
|
Sec motion dec |
|
|
Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
18187-1837 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
161304 |
18 18 43 -18 37 11 |
BU 639 AB |
2017 |
32 |
136 |
0.5 |
7.20 |
8.20 |
1.00 |
|
<=== |
Show |
NSV10543 |
161304 |
18 18 43 -18 37 11 |
SHJ 264 AB,C |
2019 |
59 |
50 |
17.2 |
6.86 |
7.63 |
0.77 |
|
|
Show |
|
161304 |
18 18 43 -18 37 11 |
FOX 225 AB,E |
2000 |
7 |
328 |
145.6 |
6.86 |
10.78 |
3.92 |
|
|
Show |
|
|
18 18 44 -18 36 60 |
BU 300 CD |
2015 |
10 |
329 |
6.3 |
7.63 |
13.10 |
5.47 |
|
|
Quintuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
NSV10543 |
|
Constellation |
Sagittarius |
|
SAO |
161304 |
|
Tycho2 |
6269-04010-1 |
|
Gaia DR2 |
4096324302654797952 |
|
HD |
168021 |
|
HR |
6848 |
|
GC |
24978 |
|
ADS |
11240 |
|
WDS 18187-1837 BU 639 AB : NOTES
discov_num |
notes |
refcode |
BU 639 |
There was a close approach around 1900. |
|
|
Large divergences in estimated distance due to considerable southern |
|
|
declination. |
Vou1951 |
|
1994.5191: Quadrant determined by speckle imaging analysis |
Hor1996 |
REFERENCES
refcode |
metd |
author |
reference |
Hor1996 |
S j |
Horch, E.P. Dinescu, D.I., Girard, T.M., van Altena, W.F., Lopez, C., & Franz, O. |
1996AJ....111.1681H |
Hor1996 |
|
AJ 111, 1681, 1996 (see also 1997 Inf. Circ. 131, 1 re: HR 4143) |
1997IAUDS.131....1H |
Vou1951 |
Ma - |
Voute, J.G. |
1951RA......2..319V |
Vou1951 |
|
Vatican Obs. Richerche Astron. 2, 319, 1951 |
|
DISCOVERER
idgroup |
discov |
author |
1 |
BU |
Burnham, S.W. (BU 1 - 81) |
179 |
FOX |
Fox, P. |
190 |
SHJ |
South, J. & Herschel, J. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
18187-1837 |
BU 639 |
AB |
1996 |
30 |
143 |
0.4 |
7.20 |
8.20 |
B0Ib |
N |
181843.26-183710.8 |
18187-1837 |
BU 639 |
AB |
2008 |
31 |
140 |
0.5 |
7.20 |
8.20 |
B0Ib |
N |
181843.26-183710.8 |
18187-1837 |
BU 639 |
AB |
2017 |
32 |
137 |
0.5 |
7.20 |
8.20 |
B0Ib |
N |
181843.26-183710.8 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18187-1837 BU 639 AB : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18187-1837 BU 639 AB : MEASURES
No records found.
WDS 18187-1837 : 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 18187-1837 : ALADIN DSS IMAGE @ 18h 18m 43.26s -18° 37' 10.8"
WDS 18187-1837 BU 639 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 |
|
18187-1837 |
BU 639 |
AB |
136 |
0.5 |
|
Show |
|
18187-1837 |
SHJ 264 |
AB,C |
50 |
17.2 |
|
Show |
|
18187-1837 |
FOX 225 |
AB,E |
328 |
145.6 |
|
Show |
|
18187-1837 |
BU 300 |
CD |
329 |
6.3 |
1 |
Show |
|
18180-1834 |
ARA 473 |
|
334 |
14.2 |
11 |
Show |
|
18191-1828 |
ARA 474 |
|
222 |
12.6 |
12 |
Show |
|
18180-1842 |
HWE 42 |
|
189 |
21.5 |
13 |
Show |
|
18179-1848 |
BU 299 |
BR |
133 |
10.2 |
16 |
Show |
|
18179-1848 |
BU 299 |
TS |
304 |
7.5 |
17 |
Show |
|
18179-1848 |
BU 299 |
VW |
317 |
6.8 |
17 |
Show |
|
18179-1848 |
SHJ 263 |
AB |
10 |
53.7 |
17 |
Show |
|
18179-1848 |
BU 299 |
AT |
21 |
21.5 |
17 |
Show |
|
18179-1848 |
BU 299 |
AU |
66 |
28.5 |
17 |
Show |
|
18179-1848 |
BU 299 |
AV |
324 |
22.9 |
17 |
Show |
|
18179-1848 |
BU 299 |
AW |
325 |
23.4 |
17 |
Show |
|
18175-1828 |
OCC 12 |
Aa,Ab |
-1 |
0.1 |
21 |
Show |
|
18175-1828 |
RST3170 |
AB |
169 |
8.6 |
21 |
Show |
|
18193-1817 |
BRT1527 |
|
359 |
5.0 |
22 |
Show |
|
18184-1859 |
OCC9180 |
|
-1 |
0.1 |
23 |
Show |
|
18177-1820 |
ARA 472 |
|
183 |
14.8 |
24 |
Show |
|
18173-1851 |
ARA 470 |
|
166 |
13.8 |
26 |
Show |
|
18171-1826 |
ARA 469 |
|
355 |
6.5 |
27 |
Show |
|
18174-1819 |
ARA 471 |
|
54 |
11.8 |
27 |
Show |
|
18181-1810 |
NSN 136 |
|
76 |
32.9 |
29 |
Show |
|
18186-1906 |
OCC9181 |
|
-1 |
0.2 |
30 |
Show |
|
18166-1842 |
ARA 468 |
|
131 |
5.9 |
31 |
Show |
|
18166-1835 |
DBR 312 |
|
37 |
4.4 |
31 |
Show |
|
18198-1809 |
RST3175 |
|
127 |
0.6 |
31 |
Show |
|
18188-1804 |
OL 104 |
|
213 |
3.6 |
31 |
Show |
|
18166-1830 |
DBR 311 |
|
101 |
3.1 |
32 |
Show |
|
18165-1830 |
DBR 310 |
|
63 |
2.1 |
33 |
Show |
|
18170-1858 |
MZA 23 |
AB |
227 |
17.5 |
33 |
Show |
|
18170-1858 |
SNA 85 |
Aa,Ab |
265 |
0.0 |
33 |
Show |
|
18170-1858 |
SNA 85 |
AC |
88 |
5.1 |
33 |
Show |
|
18170-1858 |
SNA 85 |
AD |
247 |
5.8 |
33 |
Show |
|
18170-1858 |
SNA 85 |
AE |
58 |
7.3 |
33 |
Show |
|
18168-1858 |
OCC9179 |
|
-1 |
0.1 |
35 |
Show |
|
18165-1856 |
ARA 466 |
|
140 |
7.3 |
37 |
Show |
|
18206-1811 |
SKF 100 |
|
140 |
3.8 |
38 |
Show |
|
18164-1858 |
B 1885 |
|
257 |
2.5 |
39 |
Show |
|
18166-1812 |
ARA 467 |
|
81 |
13.6 |
40 |
Show |
|
18214-1852 |
EVS 35 |
AB |
204 |
10.6 |
41 |
Show |
|
18214-1852 |
KRV 48 |
AC |
157 |
71.4 |
41 |
Show |
|
18214-1852 |
KRV 48 |
AD |
98 |
95.0 |
41 |
Show |
|
18192-1757 |
ARA 276 |
|
40 |
12.6 |
42 |
Show |
|
18156-1835 |
ARA 465 |
|
258 |
15.2 |
45 |
Show |
|
18158-1855 |
OCC 566 |
|
-1 |
0.1 |
46 |
Show |
|
18195-1754 |
ARA 277 |
|
117 |
15.1 |
46 |
Show |
|
18174-1920 |
B 2863 |
|
310 |
5.7 |
47 |
Show |
|
18210-1805 |
DON 893 |
|
220 |
2.8 |
47 |
Show |
|
18179-1750 |
TDT 781 |
Aa,Ab |
130 |
0.4 |
49 |
|
|
WDS 18187-1837 : COMPONENTS
|
A |
B |
C |
D |
B |
pa=137.5°
sep=0.46"
| |
C |
pa=50.8°
sep=17.24"
| pa=49.3°
sep=17.22"
| |
D |
pa=32.2°
sep=19.24"
| pa=30.9°
sep=19.36"
| pa=330.0°
sep=6.21"
| |
E |
pa=329.6°
sep=143.54"
| pa=329.5°
sep=143.99"
| pa=322.7°
sep=141.94"
| pa=322.3°
sep=135.78"
|
18187-1837 A
Coord arcsec 2000 |
181843.26-183710.8 |
|
Mag |
7.2 |
|
Spectral class |
B0Ib (blue-white) |
|
PmRA |
4.00 |
|
PmDE |
-4.0 |
|
SAO |
161304 |
|
Tycho2 |
6269-04010-1 |
|
HD |
168021 |
|
HR |
6848 |
|
GC |
24978 |
|
DM |
BD-18 4896 |
|
Tycho2 |
6269-04010-1 |
|
Pflag |
|
|
RAmdeg |
274.68025226 |
|
DEmdeg |
-18.61967101 |
|
PmRA |
0.6 |
|
PmDE |
-3.8 |
|
E RAmdeg |
4 |
|
E DEmdeg |
5 |
|
E pmRA |
1.0 |
|
E pmDE |
1.0 |
|
EpRAm |
1991.43 |
|
EpDEm |
1991.26 |
|
Num |
17 |
|
Q RAmdeg |
1.8 |
|
Q DEmdeg |
1.8 |
|
Q pmRA |
1.6 |
|
Q pmDE |
1.7 |
|
BTmag |
7.081 |
|
E BTmag |
0.015 |
|
VTmag |
6.858 |
|
E VTmag |
0.011 |
|
Prox |
173 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
274.68025056 |
|
DEdeg |
-18.61966194 |
|
EpRA 1990 |
1.86 |
|
EpDE 1990 |
1.87 |
|
E RAdeg |
3.9 |
|
E DEdeg |
5.3 |
|
Posflg |
|
|
Corr |
0.2 |
|
SAO |
161304 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
0.0008 |
|
DE1950 |
|
|
PmDE1950 |
0.005 |
|
Vmag |
6.4 |
|
SpType |
B0 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
24978 |
|
DM |
BD-18 4896 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
168021 |
|
M HD |
0 |
|
GC |
24978 |
|
RA1950rad |
4.78125942 |
|
DE1950rad |
-0.32533783 |
|
PmRA2000 |
0.0009 |
|
PmDE2000 |
0.006 |
|
Ccdm |
18187-1837 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
1.34 |
|
DDEs |
-10.1 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
5 |
|
Vmag |
6.9 |
|
Sp |
B0 |
|
PmNote |
* |
|
PmRA |
14 |
|
PmDE |
5 |
|
Dm number |
-18 4896 |
|
Cat1 |
BD |
|
Name2 |
161304 |
|
Cat2 |
SAO |
|
HD |
168021 |
|
M HD |
|
|
ADS BDS |
A11240 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18128S1840A |
|
HIC |
|
|
18187-1837 B
Coord arcsec 2000 |
181843.28-183711.1 |
|
Mag |
8.2 |
|
Calc delta mag |
1 |
|
Calc coord |
yes |
|
Ccdm |
18187-1837 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
BU 639 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1958 |
|
Theta |
135 |
|
Rho |
0.4 |
|
Obs |
26 |
|
Vmag |
7.4 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11240 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18128S1840B |
|
HIC |
|
|
18187-1837 C
Coord arcsec 2000 |
181844.20-183659.9 |
|
Coord calc |
181844.20-183659.9 |
|
Mag |
7.63 |
|
Spectral class |
B5 (blue-white) |
|
PmRA |
-1.00 |
|
PmDE |
2.0 |
|
Tycho2 |
6269-04009-1 |
|
Calc delta mag |
0.43 |
|
Tycho2 |
6269-04009-1 |
|
Pflag |
|
|
RAmdeg |
274.68418130 |
|
DEmdeg |
-18.61665014 |
|
PmRA |
-1.7 |
|
PmDE |
0.4 |
|
E RAmdeg |
5 |
|
E DEmdeg |
7 |
|
E pmRA |
2.9 |
|
E pmDE |
3.1 |
|
EpRAm |
1991.77 |
|
EpDEm |
1991.66 |
|
Num |
3 |
|
Q RAmdeg |
0.8 |
|
Q DEmdeg |
1.6 |
|
Q pmRA |
0.8 |
|
Q pmDE |
1.6 |
|
BTmag |
7.832 |
|
E BTmag |
0.016 |
|
VTmag |
7.627 |
|
E VTmag |
0.013 |
|
Prox |
173 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
274.68418556 |
|
DEdeg |
-18.61665111 |
|
EpRA 1990 |
1.81 |
|
EpDE 1990 |
1.73 |
|
E RAdeg |
5.0 |
|
E DEdeg |
7.1 |
|
Posflg |
|
|
Corr |
0.3 |
|
Ccdm |
18187-1837 |
|
RComp |
|
|
Comp |
C |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
SHJ 264 |
|
DRAs |
2.18 |
|
DDEs |
-0.6 |
|
R dRAs |
10 |
|
Year |
1823 |
|
Theta |
052 |
|
Rho |
17.2 |
|
Obs |
15 |
|
Vmag |
9.4 |
|
Sp |
|
|
PmNote |
* |
|
PmRA |
-3 |
|
PmDE |
-8 |
|
Dm number |
-18 4897 |
|
Cat1 |
BD |
|
Name2 |
161306 |
|
Cat2 |
SAO |
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11240 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18128S1840C |
|
HIC |
|
|
18187-1837 D
Coord arcsec 2000 |
181843.98-183654.5 |
|
Mag |
13.1 |
|
Calc delta mag |
5.9 |
|
Calc coord |
yes |
|
Ccdm |
18187-1837 |
|
RComp |
C |
|
Comp |
D |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
BU 300 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1934 |
|
Theta |
325 |
|
Rho |
7.5 |
|
Obs |
7 |
|
Vmag |
14.9 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11240 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18128S1840D |
|
HIC |
|
|
18187-1837 E
Coord arcsec 2000 |
181838.14-183507.0 |
|
Mag |
10.78 |
|
PmRA |
-18.00 |
|
PmDE |
-17.0 |
|
Tycho2 |
6269-02839-1 |
|
Calc delta mag |
3.58 |
|
Calc coord |
yes |
|
Tycho2 |
6269-02839-1 |
|
Pflag |
|
|
RAmdeg |
274.65776131 |
|
DEmdeg |
-18.58519197 |
|
PmRA |
-18.3 |
|
PmDE |
-17.4 |
|
E RAmdeg |
51 |
|
E DEmdeg |
78 |
|
E pmRA |
3.0 |
|
E pmDE |
3.2 |
|
EpRAm |
1987.69 |
|
EpDEm |
1982.91 |
|
Num |
3 |
|
Q RAmdeg |
1.8 |
|
Q DEmdeg |
0.6 |
|
Q pmRA |
1.8 |
|
Q pmDE |
0.6 |
|
BTmag |
11.961 |
|
E BTmag |
0.169 |
|
VTmag |
10.780 |
|
E VTmag |
0.096 |
|
Prox |
999 |
|
TYC |
|
|
HIP |
|
|
CCDM |
|
|
RAdeg |
274.65780528 |
|
DEdeg |
-18.58515250 |
|
EpRA 1990 |
1.80 |
|
EpDE 1990 |
1.84 |
|
E RAdeg |
52.4 |
|
E DEdeg |
82.6 |
|
Posflg |
|
|
Corr |
0.1 |
|
Ccdm |
18187-1837 |
|
RComp |
|
|
Comp |
E |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
FOX |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1918 |
|
Theta |
330 |
|
Rho |
146.6 |
|
Obs |
1 |
|
Vmag |
11.1 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A11240 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
18128S1840E |
|
HIC |
|
|