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Current system
18531-1838
OCC 9186 Aa,Ab


Nearby doubles
32' : 18526-1909
ARA 764

42' : 18505-1818
TDT1081

44' : 18506-1813
RST3200

45' : 18562-1843
OCC 964

46' : 18500-1826
J 1658

48' : 18498-1836
TDT1075

49' : 18503-1812
TDT1080

53' : 18496-1854
OCC 454

59' : 18496-1909
OCC 455AB

59' : 18510-1747
HJ 2842

62' : 18488-1838
RSS 491

62' : 18488-1836
KUI 88

63' : 18536-1941
RST3203

68' : 18575-1903
HDS2687

69' : 18553-1738
HJ 2844

70' : 18549-1733
RST3205AB

71' : 18500-1933
KPP4124

71' : 18547-1946
OL 80

72' : 18494-1750
HJ 2840

74' : 18528-1725
HU 257

75' : 18559-1735
HJ 2845

76' : 18480-1817
WSI 36

77' : 18482-1820
J 1636

78' : 18480-1814
RST3198

79' : 18494-1740
TDT1072

83' : 18516-1719
HU 255



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.

18531-1838 OCC 9186 Aa,Ab

 
 
18h 53m 06.53s -18° 38' 12.4" P.A. -1.00 sep -1.0 mag 7.20,8.50 Sp K2III dist. 187.97 pc (613.16 l.y.)
 
 
Coord 2000 18531-1838 Discov num OCC9186 Comp Aa,Ab Coord arcsec 2000 18 53 06.53 -18 38 12.4
Date first 1978 Date last 1978 Obs 0
Pa first -1 Pa last -1 P.A. Now (θ) -1
Sep first 0.2 Sep last -1 Sep. Now (ρ) -1
Mag pri 7.20 Mag sec 8.50 delta mag (ΔM) 1.3 Spectral class K2III (yellow-orange)
Pri motion ra +004 Sec motion ra
Pri motion dec -026 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18531-1838 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 161935 18 53 07 -18 38 12 OCC 9186 Aa,Ab 1978 0 -1 -1.0 7.20 8.50 1.30 <===
Show HD 174802 161935 18 53 07 -18 38 12 HO 569 AB 2021 6 37 15.4 6.92 11.80 4.88
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 161935 HIP 92682 Tycho2 6285-01889-1
Gaia DR2 4086741650824370688 HD 174802 BD BD-18 5115 Distance 187.97
Distance ly 613.16
 
 
WDS 18531-1838 OCC 9186 Aa,Ab : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
discov author
HO Hough, G.W.
OCC Taylor, G.E., O'Leary, B., van Fladern, T.C. Bartholdi, P., Owen, F.,
OCC Hubbard, W.B., Smith, B.A., Smith, S.A., Fallon, F.W. Devinney, E.J. & Oliver, J.
OCC Dunham, D.W., Dunham, J.B., Binzel, R.P., Evans, D.S., Freuh, M., Henry, G.W.,
OCC A'Hearn, M.A., Schnurr, R., Betts, R., Haynes, H., Orcutt, R., Bowell, E., et al.
OCC Vasundhara, R., Jayakumar, K., Velu, C., Appakutty, M., Paranjpye, A.,
OCC Kulkarni, H., Nitsure, P., Prabhunne, M. & Shah, K.
OCC Lin, C.-L., Zhang, Z.-W., Chen, W.P., King, S.-K., Lin, H.-C., Bianco, F.B.,
OCC Lehner, M.J., Coehlo, N., Wang, J.-H., Mondal, S., Alcock, C., Axelrod, T., et al.
OCC Herald, D., Boyle, R., Dunham, D., Hirose, T., Maley, P., Timerson, B., Farris,
OCC T., Frappa, E., Lecacheux, J., Hayamizu, T., Kozubal, M., Nolthenius, R., et al.
OCC Loader, B., Asada, Y., Breit, D., Bradshaw, J., Gault, D., Herald, D., Iverson,
OCC E., Ishida, M., Karasaki, H., Kashiwagura, M., Miyashita, K., Messner, S., et al.
OCC Loader, B. Bradshaw, J., Breit, D., Gault, D., George, T., Herald, D., Iverson,
OCC E., Ishida, M., Karasaki, H., Kashiwagura, M., Kenmotsu, K., Lowe, D., et al.
OCC George, T., Timerson, B., Cooke, B., Degenhardt, S., Dunham, D.W., Messner, S.,
OCC Suggs, R., Venable, R. & Warren, W.H.
OCC George, T., Timerson, B., Beard, T., Blank, T., Dantowitz, R., Davis, J.,
OCC di Cicco, D., Dunham, D.W., Hill, M., Sliski, A. & Sumner, R.
OCC Bulder, H., Loader, B., Herald, D., Messner, S., Ling, A., Raab, H.,
OCC Culbertson, B., Black, S., Ishida, M., Ohno, T., & Miyashita, K.
OCC George, T., Timerson, B., Degenhardt, S., Bracken, C., Cadmus, R., Carcich, A.,
OCC Centala, J., Modic, R., & Slauson, D.
OCC Loader, B., Asada, Y., Bradshaw, J., Breit, D., Fuertes, J., Gault, D., George,T.,
OCC Graham, P., Herald, D., Holenstein, B., Iverson, E., Ishida, M., et al.
OCC George, T., Timerson, B., Brooks, J., Conrad, S., Dunham, J.B., Dunham, D.W.,
OCC Jones,R., Lipka, T.R., Thomas, W., Warren, W.J., Jr., Wasson, R. & Wisniewski, J.
OCC Loader, B., Bradshaw, J., Breit, D., Edens, E., Forbes, M., Gault, D., George, T.,
OCC Haymes, T., Herald, D., Holenstein, B., Ito, T., Iverson, E., et al.
OCC Soma, M., Hayamizu, T., Ishida, M., Owada, M., Ida, M., Aikawa, R., Hashimoto, A.,
OCC Horaguchi, T., Kitazaki, K., Uchiyama, S., Uehara, S., Yaeza, A., et al.
OCC Loader, B., Asai, A., Bardecker, J., Bradshaw, J., Breit, D., Buettner, D.,
OCC Chad, C., Denyer, P., Edens, E., Forbes, M., Gault, D., George, T., et al.
OCC Loader, B., Anderson, P., Asai, A., Bradshaw, J., Breit, D., Forbes, M.,
OCC Gault, D., George, T., Haymes, T., Herald, D., Ishida, M., Kerr, S., et al.
OCC Timerson, B., George, T., Bean, J., Blank, T., Bardecker, J., Dunham, D., Dunham,
OCC JDSO 15, 162, 2019
OCC Hirose, T., Ida, M., Yamamura, H., Uchiyama, S., Hashimoto, A., Aikawa, R.,
OCC JDSO 15, 268, 2019
OCC Loader, B., Asada, Y., Asai, A., Bardecker, J., Bourgeois, J., Bradshaw, J., Chad,
OCC JDSO 15, 503, 2019
OCC Gault, D., Barry, T., Nosworthy, P., Hanna, W., Messner, S., Oesper, D., Dunford,
OCC JDSO 16, 440, 2020
OCC Frappa, E., Zeleny, P., Baruffetti, P., Bendjeddou, A., Bigi, M., Bouazara, O.,
OCC JDSO 17, 230, 2021
OCC Hayamizu, T., Soma, M., Watanabe, Hi., Asai, A., Watanable, Ha., Akira, A.,
OCC JDSO 18, 61, 2022
OCC Warner, E., Gault, D., Mousa, M., Oakey, P., Palaoro, A., Smith, R. & Williams,
OCC JDSO 21, 125, 2025
OCC Simpson, M., Klaszus, E., Deen, S., Ceravolo, P., Gowe, B., Alves, N., Holloway,
OCC JDSO 21, 136, 2025
OCC Weber, C., Conjat, M., Kattentidt, B., Kubanek, J., Kubankova, S., Lavagno, G.,
OCC JDSO 21, 144, 2025
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
18531-1838 OCC9186 Aa,Ab 1978 0 -1 -1.0 7.20 8.50 K2III 185306.53-183812.4

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

 
 
WDS 18531-1838 OCC 9186 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18531-1838 OCC 9186 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18531-1838 : VIRTUAL EYEPIECE
 
 

18531-1838 HO 569A mag 6.92 Sp K2III 18531-1838 OCC9186Ab mag 8.5 18531-1838 HO 569B sep 15.4 P.A. 36.80 mag 11.8 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 18531-1838 : ALADIN DSS IMAGE @ 18h 53m 06.53s -18° 38' 12.4"
 
 
 
 
WDS 18531-1838 OCC 9186 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18531-1838 OCC9186Aa,Ab distance=0' 18526-1909 ARA 764 distance=32' 18505-1818 TDT1081 distance=42' 18506-1813 RST3200 distance=44' 18562-1843 OCC 964 distance=45' 18500-1826 J 1658 distance=46' 18498-1836 TDT1075 distance=48' 18503-1812 TDT1080 distance=49' 18496-1854 OCC 454 distance=53' 18496-1909 OCC 455AB distance=59' 18510-1747 HJ 2842 distance=59' 18488-1838 RSS 491 distance=62' 18488-1836 KUI 88 distance=62' 18536-1941 RST3203 distance=63' 18575-1903 HDS2687 distance=68' 18553-1738 HJ 2844 distance=69' 18549-1733 RST3205AB distance=70' 18549-1733 HJ 2843AB,C distance=70' 18500-1933 KPP4124 distance=71' 18547-1946 OL 80 distance=71' 18494-1750 HJ 2840 distance=72' 18528-1725 HU 257 distance=74' 18559-1735 HJ 2845 distance=75' 18480-1817 WSI 36 distance=76' 18482-1820 J 1636 distance=77' 18480-1814 RST3198 distance=78' 18494-1740 TDT1072 distance=79' 18516-1719 HU 255 distance=83' 18510-1958 ARA1162AB distance=86' 18510-1958 FYM 269AC distance=86' 18510-1958 FYM 269AD distance=86' 18483-1935 B 2461 distance=90' 18479-1936 J 1657 distance=90' 18470-1912 HJ 2837 distance=94' 18546-2010 ARA1163 distance=94' 18527-2014 OCC1017 distance=97' 18594-1917 OCC 590 distance=98' 18597-1909 BRT1544 distance=99' 18528-1658 J 2238 distance=99' 18510-2018 PLT 3AB distance=104' 18510-2018 EVS 38AC distance=104' 19000-1918 OCC 346 distance=106' 18598-1927 DYL 25AB distance=107' 18598-1927 DYL 25BC distance=107' 18598-1927 DYL 25BD distance=107' 18548-2024 J 1753AB distance=108' 18548-2024 J 1753AC distance=108' 18596-1934 DYL 22 distance=109' 18465-1940 BRT1543 distance=112' 18535-2030 DON 933 distance=113' 18497-2019 SEE 362 distance=113' 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 18531-1838 HO 569 AB 37 15.4 0
Show 18531-1838 OCC9186 Aa,Ab -1 -1.0 0
Show 18526-1909 ARA 764 221 10.8 32
Show 18505-1818 TDT1081 67 2.1 42
Show 18506-1813 RST3200 0 0.7 44
Show 18562-1843 OCC 964 -1 0.0 45
Show 18500-1826 J 1658 58 8.5 46
Show 18498-1836 TDT1075 97 0.5 48
Show 18503-1812 TDT1080 271 3.0 49
Show 18496-1854 OCC 454 -1 0.1 53
Show 18496-1909 OCC 455 AB -1 0.2 59
Show 18510-1747 HJ 2842 338 29.9 59
Show 18488-1838 RSS 491 334 10.8 62
Show 18488-1836 KUI 88 145 0.4 62
Show 18536-1941 RST3203 328 0.7 63
Show 18575-1903 HDS2687 346 1.9 68
Show 18553-1738 HJ 2844 105 23.7 69
Show 18549-1733 RST3205 AB 300 0.5 70
Show 18549-1733 HJ 2843 AB,C 339 22.0 70
Show 18500-1933 KPP4124 15 1.5 71
Show 18547-1946 OL 80 141 3.5 71
Show 18494-1750 HJ 2840 173 15.2 72
Show 18528-1725 HU 257 341 2.1 74
Show 18559-1735 HJ 2845 6 3.9 75
Show 18480-1817 WSI 36 262 15.8 76
Show 18482-1820 J 1636 78 7.1 77
Show 18480-1814 RST3198 154 0.4 78
Show 18494-1740 TDT1072 309 0.7 79
Show 18516-1719 HU 255 166 1.4 83
Show 18510-1958 ARA1162 AB 290 10.3 86
Show 18510-1958 FYM 269 AC 179 7.0 86
Show 18510-1958 FYM 269 AD 342 16.7 86
Show 18483-1935 B 2461 197 6.7 90
Show 18479-1936 J 1657 28 3.6 90
Show 18470-1912 HJ 2837 89 11.2 94
Show 18546-2010 ARA1163 231 15.2 94
Show 18527-2014 OCC1017 -1 0.1 97
Show 18594-1917 OCC 590 -1 0.1 98
Show 18597-1909 BRT1544 322 2.3 99
Show 18528-1658 J 2238 182 4.8 99
Show 18510-2018 PLT 3 AB 101 93.6 104
Show 18510-2018 EVS 38 AC 158 3.3 104
Show 19000-1918 OCC 346 -1 1.0 106
Show 18598-1927 DYL 25 AB 166 7.3 107
Show 18598-1927 DYL 25 BC 197 4.6 107
Show 18598-1927 DYL 25 BD 268 5.8 107
Show 18548-2024 J 1753 AB 277 8.2 108
Show 18548-2024 J 1753 AC 56 11.3 108
Show 18596-1934 DYL 22 296 9.0 109
Show 18465-1940 BRT1543 258 3.3 112
Show 18535-2030 DON 933 237 0.3 113

 
 
WDS 18531-1838 : COMPONENTS
 
 
  A Ab
Ab pa=0.0°
sep=0.00"
 
B pa=36.8°
sep=15.43"
pa=36.8°
sep=15.43"
 
 
18531-1838 A
 
 
Name HD 174802 Coord arcsec 2000 185306.53-183812.4 Mag 6.92 Spectral class K2III (yellow-orange)
PmRA 4.00 PmDE -26.0 SAO 161935 HIP 92682
Tycho2 6285-01889-1 HD 174802 GC 25896 BD BD-18 5115
Tycho2
Tycho2 6285-01889-1 Pflag RAmdeg 283.27720283 DEmdeg -18.63684170
PmRA 3.4 PmDE -26.7 E RAmdeg 4 E DEmdeg 5
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.33 EpDEm 1991.00
Num 19 Q RAmdeg 0.8 Q DEmdeg 0.6 Q pmRA 0.7
Q pmDE 0.7 BTmag 8.478 E BTmag 0.016 VTmag 6.918
E VTmag 0.010 Prox 999 TYC T HIP 92682
CCDM RAdeg 283.27719444 DEdeg -18.63678000 EpRA 1990 1.80
EpDE 1990 1.67 E RAdeg 4.2 E DEdeg 5.1 Posflg
Corr 0.0
SAO
SAO 161935 DelFlag RA1950 PmRA1950 -0.0008
DE1950 PmDE1950 -0.023 Vmag 6.9 SpType K0
Double code Source 70 CatNum 25896 DM BD-18 5115
DMcomp BDsup HD 174802 M HD 0
GC 25896 RA1950rad 4.93133201 DE1950rad -0.32635306 PmRA2000 -0.0007
PmDE2000 -0.023
Hipparcos
Catalog H HIP 92682 Proxy RAhms 18 53 06.53
DEdms -18 38 12.4 Vmag 6.77 VarFlag R Vmag H
RAdeg 283.277 DEdeg -18.6368 AstroRef Plx 6.66
CCDM 3.83 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD BD BD-18 5115
CD CP Dm number -18 5115 VIred 1.26
SpType K1III R SpType Coord arcsec 2000 185306.53-183812.4
Hipparcos 2
HIP 92682 Sn 5 So 0 Nc 1
RArad 4.9441197614 DErad -0.325273124 Plx 5.32 PmRA 3.76
PmDE -25.48 E RArad 0.41 E DErad 0.26 E Plx 0.48
E pmRA 0.5 E pmDE 0.35 Hpmag E Hpmag 0.001
SHp 0.007 VA 0 BV 1.276 E BV 0.009
VI 1.24
CCDM
Ccdm 18531-1838 RComp Comp A Note1
Note2 Discov num DRAs 0.43 DDEs -12.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.9 Sp K0 PmNote *
PmRA -10 PmDE -21 Dm number -18 5115 Cat1 BD
Name2 161935 Cat2 SAO HD 174802 M HD
ADS BDS A11776 M ADS BDS N IDS IDS 18472S1846A
HIC 92682
 
 
18531-1838 Ab
 
 
Coord arcsec 2000 185306.53-183812.4 Mag 8.5 Delta magnitude 1.3 Coordinate calculated yes
 
 
18531-1838 B
 
 
Coord arcsec 2000 185307.18-183800.0 Mag 11.8 Delta magnitude 4.6 Coordinate calculated yes
CCDM
Ccdm 18531-1838 RComp Comp B Note1
Note2 Discov num HO 569 DRAs DDEs
R dRAs Year 1894 Theta 040 Rho 18.5
Obs 2 Vmag 11.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11776 M ADS BDS N IDS IDS 18472S1846B
HIC