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Current system
18024-2302
SNA 77 Aa,Ab


Nearby doubles
7' : 18027-2306
RST3151

13' : 18030-2252
TDS 898

17' : 18019-2247
BU 283AB

17' : 18022-2318
B 2851

21' : 18030-2243
RSS 468

22' : 18011-2252
ARA1835

25' : 18039-2250
B 2430

25' : 18039-2247
ARA1840

28' : 18004-2258
ARA1834

29' : 18034-2237
ARA1839

30' : 18030-2233
ARA1838AB

36' : 18043-2239
LYS 32

38' : 18004-2235
DON 877

41' : 18041-2230
ARA1841

41' : 18042-2230
S 698AB

41' : 18051-2317
B 375

41' : 18042-2231
ARA1843

42' : 18054-2300
LYS 33AB

43' : 18004-2333
RST3146

43' : 18015-2221
ARA1836

43' : 18049-2326
ARA2210

43' : 18055-2312
ARA2211

48' : 18005-2341
ALD 110AB

48' : 18003-2224
TDT 627

50' : 18055-2326
SKF2529AB

51' : 18056-2328
ARA2212



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18024-2302 SNA 77 Aa,Ab

 
 
18h 02m 23.55s -23° 01' 50.9" P.A. 248.00 sep 0.0 mag 7.40,9.80 Sp O7.5V dist. 230.95 pc (753.36 l.y.)
 
 
Coord 2000 18024-2302 Discov num SNA  77 Comp Aa,Ab Coord arcsec 2000 18 02 23.55 -23 01 50.9
Date first 2012 Date last 2013 Obs 2
Pa first 262 Pa last 248.3 P.A. Now (θ) 248.3°
Sep first 0.0 Sep last 0.034 Sep. Now (ρ) 0.034"
Mag pri 7.40 Mag sec 9.80 delta mag (ΔM) 2.4 Spectral class O7.5V (blue)
Pri motion ra -000 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.
 
 
18024-2302 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 186145 18 02 24 -23 01 51 SNA 77 Aa,Ab 2013 2 248 0.0 7.40 9.80 2.40 <===
Show HD 164492 186145 18 02 24 -23 01 51 H N 40 AB 2017 24 20 6.2 7.59 10.40 2.81
Show 186145 18 02 24 -23 01 51 H N 6 AC 2019 35 212 10.7 7.59 8.66 1.07
Show 186145 18 02 24 -23 01 51 H N 6 AE 2017 6 205 16.2 7.59 12.60 5.01
Show 186145 18 02 24 -23 01 51 HLD 175 AF 2017 8 108 22.1 7.59 14.30 6.71
Show 186145 18 02 24 -23 01 51 H N 6 AG 2017 5 212 40.7 7.59 13.40 5.81
Show 186145 18 02 24 -23 01 51 TRN 26 AH 2013 3 345 1.5 7.59 13.00 5.41
Show 186145 18 02 24 -23 01 51 SNA 77 AI 2013 1 43 3.1 7.31 11.54 4.23
Show 186145 18 02 24 -23 01 51 SNA 77 AJ 2015 3 165 6.5 7.31 12.86 5.55
Show 18 02 23 -23 01 60 H N 6 CD 2015 14 280 2.4 8.66 10.70 2.04
Show 18 02 23 -23 01 60 H N 6 CE 2015 6 191 6.0 8.66 12.60 3.94
Show 18 02 23 -23 01 60 H N 6 CF 2015 5 85 26.8 8.66 14.30 5.64
Show 18 02 23 -23 01 60 H N 6 CG 2017 5 212 30.0 8.66 13.40 4.74
11-fold system
10 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V3791 Sgr Constellation Sagittarius SAO 186145 HIP 88333
Tycho2 6842-00270-1 Gaia DR2 4069268658691324672 HD 164492 CD CD-2313804
Distance 230.95 Distance ly 753.36
 
 
WDS 18024-2302 SNA 77 Aa,Ab : NOTES
 
 
discov_num notes refcode
SNA 77 Aa,Ab: HD 164492A is the center of a wide multiple system. We detected
two additional faint companions at 3.1" and 6.5", and further resolved
A into a 25mas pair with a rather faint companion (dH=3.2). The Cti1977
object was reported as RV variable by Conti et al. (1977) but this is Cii2012
not confirmed by Chini et al. (2012). Sna2014
 
 
REFERENCES
 
 
refcode metd author reference
Cii2012 not - Chini, R., Hoffmeister, V.H., Nasseri, A., Stahl, O., & Zinnecker, H. 2012MNRAS.424.1925C
Cii2012 MNRAS 424, 1925, 2012
Cti1977 - Conti, P., Leep, E.M., & Lorre, J. 1977ApJ...214..759C
Cti1977 ApJ 214, 759, 1977
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 HLD Holden, E.S.
36 TRN Turner, N.H., ten Brummelaar, T.A., & Mason, B.D.
37 TRN Turner, N.H., ten Brummelaar, T.A., McAlister, H.A., Mason, B.D., Hartkopf, W.I.,
37 TRN & Roberts, L.C.
38 TRN Turner, N.H., ten Brummelaar, T.A., Roberts, L.C., Mason, B.D., Hartkopf, W.I., &
38 TRN Gies, D.R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18024-2302 SNA 77 Aa,Ab 2013 2 248 0.0 7.40 9.80 O7.5V NV K 180223.55-230150.9

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 18024-2302 SNA 77 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18024-2302 SNA 77 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18024-2302 : VIRTUAL EYEPIECE
 
 

18024-2302 H N 40A mag 7.59 Sp O8V 18024-2302 SNA 77Ab mag 9.8 18024-2302 H N 40B sep 6.1 P.A. 18.80 mag 10.4 18024-2302 H N 6C sep 10.6 P.A. 214.00 mag 8.66 Sp B6V 18024-2302 H N 6D sep 11.7 P.A. 224.20 mag 10.7 18024-2302 H N 6E sep 16.0 P.A. 203.10 mag 12.6 18024-2302 HLD 175F sep 20.5 P.A. 109.90 mag 14.3 18024-2302 H N 6G sep 39.8 P.A. 209.90 mag 13.4 18024-2302 TRN 26H sep 1.5 P.A. 346.10 mag 13 18024-2302 SNA 77I sep 3.0 P.A. 40.60 mag 11.54 18024-2302 SNA 77J sep 6.4 P.A. 166.50 mag 12.86 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18024-2302 : ALADIN DSS IMAGE @ 18h 02m 23.55s -23° 01' 50.9"
 
 
 
 
WDS 18024-2302 SNA 77 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18024-2302 SNA 77Aa,Ab distance=0' 18024-2302 H N 6CD distance=1' 18024-2302 H N 6CE distance=1' 18024-2302 H N 6CF distance=1' 18024-2302 H N 6CG distance=1' 18027-2306 RST3151 distance=7' 18030-2252 TDS 898 distance=13' 18019-2247 BU 283AB distance=17' 18019-2247 BU 283AC distance=17' 18019-2247 FOX9030AD distance=17' 18022-2318 B 2851 distance=17' 18030-2243 RSS 468 distance=21' 18011-2252 ARA1835 distance=22' 18039-2250 B 2430 distance=25' 18039-2247 ARA1840 distance=25' 18004-2258 ARA1834 distance=28' 18034-2237 ARA1839 distance=29' 18030-2233 ARA1838BC distance=30' 18030-2233 ARA1838AB distance=30' 18030-2233 ABH 93AD distance=30' 18030-2233 ABH 93AE distance=30' 18030-2233 ABH 93AF distance=30' 18030-2233 ABH 93AG distance=30' 18030-2233 ABH 93AH distance=30' 18030-2233 ABH 93AI distance=30' 18030-2233 ABH 93AJ distance=30' 18043-2239 LYS 32 distance=36' 18004-2235 DON 877 distance=38' 18041-2230 ARA1841 distance=41' 18042-2230 S 698AB distance=41' 18042-2230 WFC 289AD distance=41' 18051-2317 B 375 distance=41' 18042-2230 B 1875BC distance=41' 18042-2231 ARA1843 distance=41' 18042-2230 ARA1842DE distance=42' 18054-2300 LYS 33AB distance=42' 18054-2300 SNA 80AC distance=42' 18054-2300 SNA 80AD distance=42' 18054-2300 SNA 80AE distance=42' 18004-2333 RST3146 distance=43' 18015-2221 ARA1836 distance=43' 18049-2326 ARA2210 distance=43' 18055-2312 ARA2211 distance=43' 18005-2341 ALD 110AB distance=48' 18005-2341 SKF2528AC distance=48' 18005-2341 SKF2528AD distance=48' 18005-2341 SKF2528DE distance=48' 18003-2224 TDT 627 distance=48' 18055-2326 SKF2529AB distance=50' 18055-2326 SKF2529AC distance=50' 18055-2326 SKF2529BC distance=50' grafico limitrofi
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 18024-2302 H N 40 AB 20 6.2
Show 18024-2302 H N 6 AC 212 10.7
Show 18024-2302 TRN 26 AH 345 1.5
Show 18024-2302 H N 6 AE 205 16.2
Show 18024-2302 HLD 175 AF 108 22.1
Show 18024-2302 H N 6 AG 212 40.7
Show 18024-2302 SNA 77 Aa,Ab 248 0.0
Show 18024-2302 SNA 77 AI 43 3.1
Show 18024-2302 SNA 77 AJ 165 6.5
Show 18024-2302 H N 6 CD 280 2.4 1
Show 18024-2302 H N 6 CE 191 6.0 1
Show 18024-2302 H N 6 CF 85 26.8 1
Show 18024-2302 H N 6 CG 212 30.0 1
Show 18027-2306 RST3151 32 1.3 7
Show 18030-2252 TDS 898 116 2.0 13
Show 18019-2247 BU 283 AB 238 8.3 17
Show 18019-2247 BU 283 AC 33 13.6 17
Show 18019-2247 FOX9030 AD 265 24.5 17
Show 18022-2318 B 2851 156 10.5 17
Show 18030-2243 RSS 468 288 11.4 21
Show 18011-2252 ARA1835 304 9.8 22
Show 18039-2250 B 2430 7 8.8 25
Show 18039-2247 ARA1840 267 8.0 25
Show 18004-2258 ARA1834 224 15.1 28
Show 18034-2237 ARA1839 42 12.4 29
Show 18030-2233 ARA1838 BC 121 8.6 30
Show 18030-2233 ARA1838 AB 138 8.3 30
Show 18030-2233 ABH 93 AD 354 34.1 30
Show 18030-2233 ABH 93 AE 159 40.7 30
Show 18030-2233 ABH 93 AF 186 66.0 30
Show 18030-2233 ABH 93 AG 222 24.9 30
Show 18030-2233 ABH 93 AH 255 28.4 30
Show 18030-2233 ABH 93 AI 234 73.3 30
Show 18030-2233 ABH 93 AJ 284 104.1 30
Show 18043-2239 LYS 32 12 23.9 36
Show 18004-2235 DON 877 96 2.7 38
Show 18041-2230 ARA1841 33 7.5 41
Show 18042-2230 S 698 AB 316 29.7 41
Show 18042-2230 WFC 289 AD 13 39.2 41
Show 18051-2317 B 375 168 0.9 41
Show 18042-2230 B 1875 BC 236 0.5 41
Show 18042-2231 ARA1843 338 11.3 41
Show 18042-2230 ARA1842 DE 110 12.6 42
Show 18054-2300 LYS 33 AB 289 35.2 42
Show 18054-2300 SNA 80 AC 21 5.6 42
Show 18054-2300 SNA 80 AD 186 5.6 42
Show 18054-2300 SNA 80 AE 184 7.8 42
Show 18004-2333 RST3146 228 0.5 43
Show 18015-2221 ARA1836 20 8.4 43
Show 18049-2326 ARA2210 145 8.7 43
Show 18055-2312 ARA2211 89 10.8 43

 
 
WDS 18024-2302 : COMPONENTS
 
 
  A Ab B C D E F G H I
Ab pa=246.6°
sep=0.03"
 
B pa=18.8°
sep=6.11"
pa=19.0°
sep=6.13"
 
C pa=214.0°
sep=10.61"
pa=213.9°
sep=10.59"
pa=208.5°
sep=16.59"
 
D pa=224.2°
sep=11.67"
pa=224.1°
sep=11.64"
pa=215.5°
sep=17.39"
pa=281.1°
sep=2.23"
 
E pa=203.1°
sep=16.00"
pa=203.1°
sep=15.98"
pa=201.9°
sep=22.10"
pa=183.4°
sep=5.92"
pa=163.8°
sep=6.60"
 
F pa=109.9°
sep=20.50"
pa=109.8°
sep=20.53"
pa=126.4°
sep=21.50"
pa=85.8°
sep=25.28"
pa=87.1°
sep=27.44"
pa=73.2°
sep=26.71"
 
G pa=209.9°
sep=39.83"
pa=209.9°
sep=39.80"
pa=208.4°
sep=45.84"
pa=208.4°
sep=29.25"
pa=204.2°
sep=28.66"
pa=214.4°
sep=24.01"
pa=234.9°
sep=47.86"
 
H pa=346.1°
sep=1.48"
pa=347.4°
sep=1.49"
pa=208.1°
sep=4.93"
pa=28.6°
sep=11.66"
pa=38.4°
sep=12.52"
pa=20.2°
sep=17.20"
pa=293.2°
sep=21.36"
pa=28.5°
sep=40.91"
 
I pa=40.6°
sep=2.98"
pa=40.9°
sep=3.01"
pa=180.5°
sep=3.53"
pa=35.5°
sep=13.58"
pa=43.4°
sep=14.64"
pa=25.9°
sep=18.86"
pa=298.0°
sep=19.64"
pa=30.6°
sep=42.75"
pa=70.3°
sep=2.44"
 
J pa=166.5°
sep=6.42"
pa=166.2°
sep=6.41"
pa=182.3°
sep=12.04"
pa=71.0°
sep=7.86"
pa=77.5°
sep=9.86"
pa=42.6°
sep=11.50"
pa=272.3°
sep=17.80"
pa=37.0°
sep=35.44"
pa=166.4°
sep=7.90"
pa=183.0°
sep=8.51"
 
 
18024-2302 A
 
 
Name HD 164492 Coord arcsec 2000 180223.55-230150.9 Mag 7.59 Spectral class O8V (blue)
PmRA 0.00 PmDE -9.0 SAO 186145 HIP 88330
Tycho2 6842-00270-1 HD 164492 GC 24537 DM CD-2313804
Tycho2
Tycho2 6842-00270-1 Pflag RAmdeg 270.59813590 DEmdeg -23.03085008
PmRA -0.1 PmDE -9.3 E RAmdeg 4 E DEmdeg 6
E pmRA 1.1 E pmDE 1.3 EpRAm 1991.60 EpDEm 1991.55
Num 17 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.3
Q pmDE 1.2 BTmag 7.527 E BTmag 0.016 VTmag 7.588
E VTmag 0.012 Prox 62 TYC T HIP 88333
CCDM A RAdeg 270.59813639 DEdeg -23.03082917 EpRA 1990 1.94
EpDE 1990 1.98 E RAdeg 4.3 E DEdeg 5.8 Posflg
Corr 0.2
SAO
SAO 186145 DelFlag RA1950 PmRA1950 0.0002
DE1950 PmDE1950 0.009 Vmag 6.9 SpType Oe5
Double code Source 70 CatNum 24537 DM CD-2313804
DMcomp A BDsup HD 164492 M HD 0
GC 24537 RA1950rad 4.70957723 DE1950rad -0.40197818 PmRA2000 0.0002
PmDE2000 0.01
Hipparcos
Catalog H HIP 88330 Proxy T RAhms 18 02 23.14
DEdms -23 02 00.1 Vmag 7.14 VarFlag R Vmag H
RAdeg 270.596 DEdeg -23.0333 AstroRef C Plx -3.59
CCDM 18024-2302 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source F Qual C M HIP
Theta Rho HD BD
CD CP Dm number VIred 0.73
SpType R SpType Coord arcsec 2000 180223.14-230200.1
Hipparcos 2
HIP 88330 Sn 15 So 3 Nc 1
RArad 4.7227988439 DErad -0.4020078594 Plx -9.68 PmRA -24.84
PmDE 14.52 E RArad 7.66 E DErad 3.54 E Plx 7.53
E pmRA 6.81 E pmDE 3.46 Hpmag 7.2812 E Hpmag 0.0067
SHp 0.077 VA 0 BV 0 E BV 0
VI 0
CCDM
Ccdm 18024-2302 RComp Comp A Note1
Note2 Discov num DRAs -0.42 DDEs 10.6
R dRAs 41 Year Theta Rho
Obs 7 Vmag 7.4 Sp O7 PmNote *
PmRA 5 PmDE 10 Dm number -2313804 Cat1 CD
Name2 186145 Cat2 SAO HD 164492 M HD
ADS BDS A10991 M ADS BDS N IDS IDS 17563S2302A
HIC 88333
 
 
18024-2302 Ab
 
 
Coord arcsec 2000 180223.55-230150.9 Mag 9.8 Calc delta mag 2.4 Calc coord yes
 
 
18024-2302 B
 
 
Coord arcsec 2000 180223.69-230145.1 Mag 10.4 PmRA -5.00 PmDE -1.0
Calc delta mag 3 Calc coord yes
CCDM
Ccdm 18024-2302 RComp Comp B Note1
Note2 Discov num H 40 DRAs DDEs
R dRAs Year 1866 Theta 022 Rho 6.0
Obs 11 Vmag 10.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10991 M ADS BDS N N IDS IDS 17563S2302B
HIC 88333
 
 
18024-2302 C
 
 
Coord arcsec 2000 180223.12-230159.7 Coord calc 180223.12-230159.7 Mag 8.66 Spectral class B6V (blue-white)
PmRA 0.00 PmDE -12.0 Tycho2 6842-02141-1 Calc delta mag 1.26
Tycho2
Tycho2 6842-02141-1 Pflag RAmdeg 270.59638152 DEmdeg -23.03338030
PmRA 0.3 PmDE -11.5 E RAmdeg 7 E DEmdeg 10
E pmRA 2.0 E pmDE 2.0 EpRAm 1991.72 EpDEm 1991.59
Num 5 Q RAmdeg 2.3 Q DEmdeg 2.2 Q pmRA 2.3
Q pmDE 2.2 BTmag 8.657 E BTmag 0.018 VTmag 8.656
E VTmag 0.017 Prox 108 TYC T HIP 88330
CCDM C RAdeg 270.59638083 DEdeg -23.03335444 EpRA 1990 1.88
EpDE 1990 1.94 E RAdeg 7.1 E DEdeg 10.2 Posflg D
Corr 0.2
CCDM
Ccdm 18024-2302 RComp Comp C Note1
Note2 Discov num H 6 DRAs -0.88 DDEs 0.3
R dRAs 41 Year 1823 Theta 212 Rho 10.8
Obs 13 Vmag 8.5 Sp PmNote *
PmRA -11 PmDE -12 Dm number Cat1
Name2 186143 Cat2 SAO HD M HD
ADS BDS A10991 M ADS BDS N N IDS IDS 17563S2302C
HIC 88330
 
 
18024-2302 D
 
 
Coord arcsec 2000 180222.96-230159.3 Mag 10.7 Calc delta mag 3.3 Calc coord yes
CCDM
Ccdm 18024-2302 RComp C Comp D Note1
Note2 Discov num H 6 DRAs -0.92 DDEs -5.7
R dRAs 41 Year 1866 Theta 281 Rho 2.3
Obs 12 Vmag 10.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10991 M ADS BDS N IDS IDS 17563S2302D
HIC 88330
 
 
18024-2302 E
 
 
Coord arcsec 2000 180223.09-230205.6 Mag 12.6 Calc delta mag 5.2 Calc coord yes
CCDM
Ccdm 18024-2302 RComp C Comp E Note1
Note2 Discov num H 6 DRAs 1.08 DDEs 2.0
R dRAs 41 Year 1875 Theta 191 Rho 6.1
Obs 3 Vmag 12.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10991 M ADS BDS N IDS IDS 17563S2302E
HIC 88330
 
 
18024-2302 F
 
 
Coord arcsec 2000 180224.95-230157.9 Mag 14.3 PmRA 1.00 PmDE -11.0
Calc delta mag 6.9 Calc coord yes
CCDM
Ccdm 18024-2302 RComp C Comp F Note1
Note2 Discov num H 6 DRAs -2.00 DDEs -25.4
R dRAs 41 Year 1875 Theta 082 Rho 28.4
Obs 3 Vmag 13.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10991 M ADS BDS N IDS IDS 17563S2302F
HIC
 
 
18024-2302 G
 
 
Coord arcsec 2000 180222.11-230225.4 Mag 13.4 PmRA -7.00 PmDE -4.0
Calc delta mag 6 Calc coord yes
CCDM
Ccdm 18024-2302 RComp C Comp G Note1
Note2 Discov num H 6 DRAs DDEs
R dRAs Year 1878 Theta 212 Rho 29.6
Obs 2 Vmag 13.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10991 M ADS BDS N IDS IDS 17563S2302G
HIC
 
 
18024-2302 H
 
 
Coord arcsec 2000 180223.52-230149.5 Mag 13 Calc delta mag 5.6 Calc coord yes
 
 
18024-2302 I
 
 
Coord arcsec 2000 180223.69-230148.6 Mag 11.54 Calc delta mag 4.14 Calc coord yes
 
 
18024-2302 J
 
 
Coord arcsec 2000 180223.66-230157.1 Mag 12.86 Calc delta mag 5.46 Calc coord yes