18168-1631 SNA 84 AB
18h 16m 49.65s -16° 31' 04.3" P.A. 117.00 sep 5.1 mag 7.35,12.94 Sp O6.5V dist. 649.35 pc (2118.18 l.y.)
Coord 2000
18168-1631
Discov num
SNA 84
Comp
AB
Coord arcsec 2000
18 16 49.65 -16 31 04.3
Date first
2012
Date last
2012
Obs
1
Pa first
117
Pa last
117.4
P.A. Now (θ)
117.4°
Sep first
5.1
Sep last
5.06
Sep. Now (ρ)
5.06"
Mag pri
7.35
Mag sec
12.94
delta mag (ΔM)
5.59
Spectral class
O6.5V (blue)
Pri motion ra
+001
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
N
K
(See Notes, 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
Nature of this double is uncertain.
18168-1631 SYSTEM COMPONENTS
Show
name
SAO
coord
wds_name
last
obs
pa
sep
mag1
mag2
d_mag
orb
current
Show
161251
18 16 50 -16 31 04
SNA 84 AB
2012
1
117
5.1
7.35
12.94
5.59
<===
Show
HD 167633
161251
18 16 50 -16 31 04
SNA 84 AC
2015
3
199
5.5
7.35
10.62
3.27
Show
161251
18 16 50 -16 31 04
SNA 84 AD
2015
3
261
6.8
7.35
13.07
5.72
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation
Sagittarius
SAO
161251
HIP
89584
Tycho2
6265-02178-1
Gaia DR2
4097600496363078912
HD
167633
BD
BD-16 4786
Distance
649.35
Distance ly
2118.18
WDS 18168-1631 SNA 84 AB : NOTES
discov_num
notes
refcode
SNA 84
We detect three previously unreported distant companions in the NACO
FOV, but lack PIONIER observations to investigate possible closer
companions. The object was reported as SB1? by Abt et al. (1972), a
AbH1972b
fact not confirmed by Chini et al. (2012), who prefer a RV stable
Cii2012
classification.
Sna2014
HD 167633
LS 4864. Additional radial velocities are reported by Crampton &
Fisher (1974 Pub DAO 14, 283). The star appears within the boundaries
and at the same distance of Ser OB1 in the LSC.
Msn1998a
REFERENCES
refcode
metd
author
reference
AbH1972b
not -
Abt. H.A., Levy, S.G., & Gandet, T.L.
1972AJ.....77..138A
AbH1972b
AJ 77, 138, 1972
Cii2012
not -
Chini, R., Hoffmeister, V.H., Nasseri, A., Stahl, O., & Zinnecker, H.
2012MNRAS.424.1925C
Cii2012
MNRAS 424, 1925, 2012
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
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)
WDS HISTORIC DATA
coord_2000
discov_num
comp
epoch
obs
pa
sep
mag_pri
mag_sec
spectr
notes
coord_arcsec_2000
18168-1631
SNA 84
AB
2012
1
117
5.1
7.35
12.94
O6.5V
N K
181649.65-163104.3
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18168-1631 SNA 84 AB : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18168-1631 SNA 84 AB : MEASURES
No records found.
WDS 18168-1631 : 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 18168-1631 : ALADIN DSS IMAGE @ 18h 16m 49.65s -16° 31' 04.3"
DSS color
DSS blue
2MASS
AllWISE
GALEX
SDSS9
XMM
PanSTARRS
WDS 18168-1631 SNA 84 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
18168-1631
SNA 84
AB
117
5.1
Show
18168-1631
SNA 84
AC
199
5.5
Show
18168-1631
SNA 84
AD
261
6.8
Show
18168-1622
J 1650
249
4.5
9
Show
18174-1639
TOB 279
194
13.2
12
Show
18175-1639
TOB 280
290
14.9
13
Show
18175-1638
HJ 2829
AB
320
5.0
13
Show
18175-1638
HJ 2829
AC
167
6.3
13
Show
18167-1649
TOB 278
AB
108
25.7
18
Show
18167-1649
TOB 278
BC
113
17.2
19
Show
18165-1652
HJ 2826
AB
257
8.9
20
Show
18165-1652
DAM 104
AC
55
5.5
20
Show
18165-1652
WFC 290
AD
204
5.3
20
Show
18154-1622
J 1649
337
3.4
22
Show
18177-1611
ARA 102
95
10.6
24
Show
18177-1652
BU 463
103
2.0
24
Show
18169-1656
ADP 1
47
4.5
25
Show
18196-1630
WRH 10
AB
296
6.1
26
Show
18196-1630
WRH 10
AC
153
37.5
26
Show
18172-1656
ADP 3
180
3.4
26
Show
18154-1648
HJ 2824
74
21.9
27
Show
18187-1631
TOB 281
80
21.3
27
Show
18171-1700
WSI 143
75
25.8
29
Show
18170-1700
ADP 2
298
5.3
30
Show
18157-1658
FOX 223
325
5.6
32
Show
18156-1602
AOT 72
348
8.4
35
Show
18143-1631
J 1648
90
6.2
36
Show
18159-1706
FOX 224
42
6.5
38
Show
18194-1618
BRT 628
319
4.4
40
Show
18158-1554
RST4005
313
0.4
40
Show
18195-1647
TOB 284
AB
178
13.3
42
Show
18195-1647
TOB 284
AC
63
20.0
42
Show
18160-1713
ARA 273
271
8.7
44
Show
18170-1548
J 2513
274
4.0
44
Show
18196-1601
OL 13
176
4.6
46
Show
18201-1631
TDT 802
349
1.8
48
Show
18197-1655
TOB 285
194
19.4
49
Show
18196-1600
DAM 106
340
5.8
51
Show
18204-1630
TOB 287
196
14.5
53
Show
18199-1704
SMY9003
134
24.8
56
Show
18178-1537
J 2205
AB
100
4.6
56
Show
18178-1537
J 2205
AC
47
13.9
56
Show
18128-1618
HJ 2821
AB
278
7.8
60
Show
18128-1618
BU 1463
AC
12
53.1
60
Show
18210-1633
BRT 630
354
5.5
60
Show
18202-1707
TDT 803
195
0.7
61
Show
18190-1724
TVB 301
184
7.2
62
Show
18169-1734
SKF 98
243
4.0
63
Show
18205-1706
TDT 806
101
0.5
64
Show
18213-1622
FGS 31
202
1.1
66
Show
18158-1527
SKF2388
48
12.2
66
WDS 18168-1631 : COMPONENTS
A
B
C
B
pa=118.4°
sep=4.90"
C
pa=198.5°
sep=5.48"
pa=244.6°
sep=6.69"
D
pa=260.2°
sep=6.52"
pa=276.5°
sep=10.80"
pa=311.0°
sep=6.22"
18168-1631 A
Coord arcsec 2000
181649.65-163104.3
Mag
7.35
Spectral class
O6.5V (blue)
PmRA
1.00
PmDE
-3.0
SAO
161251
HIP
89584
Tycho2
6265-02178-1
HD
167633
BD
BD-16 4786
Tycho2
6265-02178-1
Pflag
RAmdeg
274.20690042
DEmdeg
-16.51785986
PmRA
0.0
PmDE
0.2
E RAmdeg
6
E DEmdeg
8
E pmRA
1.2
E pmDE
1.3
EpRAm
1990.89
EpDEm
1990.53
Num
13
Q RAmdeg
0.7
Q DEmdeg
1.5
Q pmRA
0.7
Q pmDE
1.5
BTmag
8.389
E BTmag
0.018
VTmag
8.206
E VTmag
0.014
Prox
999
TYC
T
HIP
89584
CCDM
RAdeg
274.20690028
DEdeg
-16.51786083
EpRA 1990
1.79
EpDE 1990
1.72
E RAdeg
5.9
E DEdeg
8.0
Posflg
Corr
0.1
SAO
161251
DelFlag
RA1950
PmRA1950
-0.001
DE1950
PmDE1950
-0.004
Vmag
8.8
SpType
Oe5
Double code
Source
21
CatNum
6635
DM
BD-16 4786
DMcomp
BDsup
HD
167633
M HD
0
GC
RA1950rad
4.77319088
DE1950rad
-0.2886173
PmRA2000
-0.0008
PmDE2000
-0.003
Catalog
H
HIP
89584
Proxy
RAhms
18 16 49.65
DEdms
-16 31 04.3
Vmag
8.13
VarFlag
R Vmag
G
RAdeg
274.207
DEdeg
-16.5179
AstroRef
Plx
2.21
CCDM
N CCDM
Nsys
Ncomp
1
MultFlag
Source
Qual
M HIP
Theta
Rho
HD
167633
BD
BD-16 4786
CD
CP
Dm number
-16 4786
VIred
0.32
SpType
O6
R SpType
Coord arcsec 2000
181649.65-163104.3
HIP
89584
Sn
5
So
0
Nc
1
RArad
4.7858131505
DErad
-0.2882910187
Plx
1.54
PmRA
0.93
PmDE
-2.52
E RArad
0.94
E DErad
0.44
E Plx
1.03
E pmRA
0.93
E pmDE
0.51
Hpmag
8.2018
E Hpmag
0.0013
SHp
0.009
VA
0
BV
0.2
E BV
0.02
VI
0.22
18168-1631 B
Coord arcsec 2000
181649.95-163106.6
Mag
12.94
Calc delta mag
5.59
Calc coord
yes
18168-1631 C
Coord arcsec 2000
181649.53-163109.5
Mag
10.62
Calc delta mag
3.27
Calc coord
yes
18168-1631 D
Coord arcsec 2000
181649.20-163105.4
Mag
13.07
Calc delta mag
5.72
Calc coord
yes