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Doubles in session


Current system
18510-2018
EVS 38 AC


Nearby doubles
19' : 18497-2019
SEE 362

20' : 18510-1958
ARA1162AB

25' : 18527-2014
OCC1017

39' : 18535-2030
DON 933

41' : 18483-2033
DON 924

44' : 18503-2100
ARA1554

47' : 18500-1933
KPP4124

53' : 18546-2010
ARA1163

53' : 18536-1941
RST3203

54' : 18548-2024
J 1753AB

54' : 18508-2111
SHN 235

54' : 18479-1936
J 1657

57' : 18483-1935
B 2461

63' : 18547-1946
OL 80

72' : 18474-2108
B 1889

72' : 18496-1909
OCC 455AB

73' : 18526-1909
ARA 764

73' : 18462-2046
I 1030

74' : 18465-1940
BRT1543

83' : 18453-2039
EVS 37AB

84' : 18518-2141
DON 929

86' : 18496-1854
OCC 454

86' : 18515-2143
DON 928

88' : 18470-1912
HJ 2837

101' : 18441-1954
ARA1160

102' : 18452-2117
ARA1553



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18510-2018 EVS 38 AC

 
 
18h 50m 59.87s -20° 17' 42.3" P.A. 158.00 sep 3.3 mag 6.70,18.10 Sp G0Ib+K7 dist. 4761.9 pc (15533.32 l.y.)
 
 
Coord 2000 18510-2018 Discov num EVS  38 Comp AC Coord arcsec 2000 18 50 59.87 -20 17 42.3
Date first 2011 Date last 2011 Obs 1
Pa first 158 Pa last 158 P.A. Now (θ) 158°
Sep first 3.3 Sep last 3.3 Sep. Now (ρ) 3.3"
Mag pri 6.70 Mag sec 18.10 delta mag (ΔM) 11.4 Spectral class G0Ib+K7 (yellow/yellow-orange)
Pri motion ra +001 Sec motion ra
Pri motion dec -005 Sec motion dec
Notes N U (See Notes, Proper motion indicates non-physical)
This double is not physical.
 
 
18510-2018 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show BB Sgr 187349 18 50 60 -20 17 42 PLT 3 AB 2018 14 101 93.6 6.70 7.50 0.80
Show 187349 18 50 60 -20 17 42 EVS 38 AC 2011 1 158 3.3 6.70 18.10 11.40 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name BB Sgr Constellation Sagittarius SAO 187349 HIP 92491
Tycho2 6289-03062-1 Gaia DR2 4085919765884068736 HD 174383 BD BD-20 5286
Distance 4761.9 Distance ly 15533.32
 
 
WDS 18510-2018 EVS 38 AC : NOTES
 
 
discov_num notes refcode
PLT 3 A is BB Sgr, B is V 4088 Sgr. Plt1934
Primary is a Cepheid variable. Evs2016a
 
 
REFERENCES
 
 
refcode metd author reference
Evs2016a H3 - Evans, N.R., Bond, H.E., Schaefer, G.H., Mason, B.D., Tingle, E., Karovska, M., & 2016AJ....151..129E
Evs2016a Pillitteri, I.
Evs2016a AJ 151, 129, 2016
Evs2016a (some theta values replaced with more precise values from Evs2016b) 2016AJ....151..108E
Plt1934 - Plaut, L. 1934BAN.....7..181P
Plt1934 BAN 7, 181, 1934
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18510-2018 EVS 38 AC 2011 1 158 3.3 6.95 18.08 G0Ib NU 185059.87-201742.3

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

 
 
WDS 18510-2018 EVS 38 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18510-2018 EVS 38 AC : MEASURES
 
 
No records found.

 
 
WDS 18510-2018 : VIRTUAL EYEPIECE
 
 

18510-2018 PLT 3A mag 6.7 Sp G0Ib 18510-2018 PLT 3B sep 88.0 P.A. 101.70 mag 7.5 Sp B8II 18510-2018 EVS 38C sep 3.3 P.A. 159.20 mag 18.1 Sp K7 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 18510-2018 : ALADIN DSS IMAGE @ 18h 50m 59.87s -20° 17' 42.3"
 
 
 
 
WDS 18510-2018 EVS 38 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18510-2018 EVS 38AC distance=0' 18497-2019 SEE 362 distance=19' 18510-1958 ARA1162AB distance=20' 18510-1958 FYM 269AC distance=20' 18510-1958 FYM 269AD distance=20' 18527-2014 OCC1017 distance=25' 18535-2030 DON 933 distance=39' 18483-2033 DON 924 distance=41' 18503-2100 ARA1554 distance=44' 18500-1933 KPP4124 distance=47' 18546-2010 ARA1163 distance=53' 18536-1941 RST3203 distance=53' 18548-2024 J 1753AB distance=54' 18548-2024 J 1753AC distance=54' 18508-2111 SHN 235 distance=54' 18479-1936 J 1657 distance=54' 18483-1935 B 2461 distance=57' 18547-1946 OL 80 distance=63' 18474-2108 B 1889 distance=72' 18496-1909 OCC 455AB distance=72' 18526-1909 ARA 764 distance=73' 18462-2046 I 1030 distance=73' 18465-1940 BRT1543 distance=74' 18453-2039 EVS 37AB distance=83' 18453-2039 EVS 37AC distance=83' 18453-2039 EVS 37AD distance=83' 18453-2039 EVS 37AE distance=83' 18453-2039 EVS 37AF distance=83' 18453-2039 GAA 14Aa,Ab distance=83' 18453-2039 KRV 18AG distance=83' 18453-2039 KRV 18AH distance=83' 18518-2141 DON 929 distance=84' 18496-1854 OCC 454 distance=86' 18515-2143 DON 928 distance=86' 18470-1912 HJ 2837 distance=88' 18441-1954 ARA1160 distance=101' 18452-2117 ARA1553 distance=102' 18582-2025 HO 271 distance=102' 18439-1954 STN 44 distance=103' 18498-1836 TDT1075 distance=103' 18513-2201 HJ 5070 distance=104' 18436-2013 DON 920 distance=104' 18531-1838 HO 569AB distance=104' 18531-1838 OCC9186Aa,Ab distance=104' 18488-1838 RSS 491 distance=105' 18488-1836 KUI 88 distance=107' 18510-2208 KPP 427 distance=110' 18508-2210 BU 1300 distance=113' 18500-1826 J 1658 distance=113' 18484-2205 ARA1899 distance=113' 18549-2157 RSS 495AB distance=114' 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 18510-2018 PLT 3 AB 101 93.6
Show 18510-2018 EVS 38 AC 158 3.3
Show 18497-2019 SEE 362 13.8 19
Show 18510-1958 ARA1162 AB 290 10.3 20
Show 18510-1958 FYM 269 AC 179 7.0 20
Show 18510-1958 FYM 269 AD 342 16.7 20
Show 18527-2014 OCC1017 -1 0.1 25
Show 18535-2030 DON 933 237 0.3 39
Show 18483-2033 DON 924 53 1.2 41
Show 18503-2100 ARA1554 188 9.7 44
Show 18500-1933 KPP4124 15 1.5 47
Show 18546-2010 ARA1163 231 15.2 53
Show 18536-1941 RST3203 330 0.6 53
Show 18548-2024 J 1753 AB 277 8.2 54
Show 18548-2024 J 1753 AC 56 11.3 54
Show 18508-2111 SHN 235 -1 0.2 54
Show 18479-1936 J 1657 28 3.6 54
Show 18483-1935 B 2461 197 6.7 57
Show 18547-1946 OL 80 141 3.5 63
Show 18474-2108 B 1889 218 0.8 72
Show 18496-1909 OCC 455 AB -1 0.2 72
Show 18526-1909 ARA 764 221 10.8 73
Show 18462-2046 I 1030 161 5.9 73
Show 18465-1940 BRT1543 258 3.3 74
Show 18453-2039 EVS 37 AB 128 3.1 83
Show 18453-2039 EVS 37 AC 67 10.8 83
Show 18453-2039 EVS 37 AD 156 10.6 83
Show 18453-2039 EVS 37 AE 271 11.5 83
Show 18453-2039 EVS 37 AF 330 18.2 83
Show 18453-2039 GAA 14 Aa,Ab 349 0.0 83
Show 18453-2039 KRV 18 AG 250 29.9 83
Show 18453-2039 KRV 18 AH 304 34.9 83
Show 18518-2141 DON 929 329 3.9 84
Show 18496-1854 OCC 454 -1 0.1 86
Show 18515-2143 DON 928 277 4.9 86
Show 18470-1912 HJ 2837 89 11.2 88
Show 18441-1954 ARA1160 184 8.4 101
Show 18452-2117 ARA1553 273 10.1 102
Show 18582-2025 HO 271 327 17.4 102
Show 18439-1954 STN 44 316 1.6 103
Show 18498-1836 TDT1075 97 0.5 103
Show 18513-2201 HJ 5070 51 9.7 104
Show 18436-2013 DON 920 336 1.4 104
Show 18531-1838 HO 569 AB 38 15.6 104
Show 18531-1838 OCC9186 Aa,Ab -1 -1.0 104
Show 18488-1838 RSS 491 334 10.8 105
Show 18488-1836 KUI 88 153 0.5 107
Show 18510-2208 KPP 427 235 3.7 110
Show 18508-2210 BU 1300 254 18.0 113
Show 18500-1826 J 1658 59 8.4 113
Show 18484-2205 ARA1899 261 10.9 113

 
 
WDS 18510-2018 : COMPONENTS
 
 
  A B
B pa=101.7°
sep=88.01"
 
C pa=159.2°
sep=3.27"
pa=279.9°
sep=86.29"
 
 
18510-2018 A
 
 
Name BB Sgr Coord arcsec 2000 185059.87-201742.3 Mag 6.7 Spectral class G0Ib (yellow)
PmRA 1.00 PmDE -5.0 SAO 187349 HIP 92491
Tycho2 6289-03062-1 HD 174383 GC 25842 BD BD-20 5286
Tycho2
Tycho2 6289-03062-1 Pflag RAmdeg 282.74947233 DEmdeg -20.29523107
PmRA 1.4 PmDE -6.2 E RAmdeg 5 E DEmdeg 6
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.41 EpDEm 1991.18
Num 10 Q RAmdeg 1.2 Q DEmdeg 1.2 Q pmRA 1.2
Q pmDE 1.2 BTmag 8.132 E BTmag 0.017 VTmag 7.040
E VTmag 0.011 Prox 932 TYC T HIP 92491
CCDM RAdeg 282.74946889 DEdeg -20.29521667 EpRA 1990 1.78
EpDE 1990 1.70 E RAdeg 4.7 E DEdeg 5.7 Posflg
Corr 0.0
SAO
SAO 187349 DelFlag RA1950 PmRA1950 0.0011
DE1950 PmDE1950 -0.028 Vmag SpType G0
Double code Source 70 CatNum 25842 DM BD-20 5286
DMcomp BDsup HD 174383 M HD 0
GC 25842 RA1950rad 4.92197198 DE1950rad -0.35526501 PmRA2000 0.0012
PmDE2000 -0.028
Hipparcos
Catalog H HIP 92491 Proxy RAhms 18 50 59.87
DEdms -20 17 42.8 Vmag 6.84 VarFlag 3 R Vmag H
RAdeg 282.749 DEdeg -20.2952 AstroRef Plx 0.61
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 174383 BD BD-20 5286
CD CP Dm number -20 5286 VIred 0.99
SpType G0Ib R SpType Coord arcsec 2000 185059.87-201742.8
Hipparcos 2
HIP 92491 Sn 5 So 0 Nc 1
RArad 4.9349092044 DErad -0.3542183789 Plx -0.21 PmRA -0.52
PmDE -4.86 E RArad 0.86 E DErad 0.5 E Plx 0.93
E pmRA 1.03 E pmDE 0.67 Hpmag 7.0093 E Hpmag 0.0257
SHp 0.245 VA 1 BV 0.854 E BV 0.02
VI 0.99
 
 
18510-2018 B
 
 
Coord arcsec 2000 185106.00-201800.2 Mag 7.5 Spectral class B8II (blue-white) PmRA -2.00
PmDE -6.0 SAO 187358 HIP 92505 Tycho2 6289-03220-1
HD 174403 GC 25844 BD BD-20 5288 Calc delta mag 0.8
Calc coord yes
Tycho2
Tycho2 6289-03220-1 Pflag RAmdeg 282.77655433 DEmdeg -20.30010322
PmRA -3.5 PmDE -4.9 E RAmdeg 5 E DEmdeg 6
E pmRA 1.3 E pmDE 1.4 EpRAm 1991.35 EpDEm 1991.11
Num 9 Q RAmdeg 0.6 Q DEmdeg 0.7 Q pmRA 0.7
Q pmDE 0.6 BTmag 7.671 E BTmag 0.016 VTmag 7.564
E VTmag 0.012 Prox 932 TYC T HIP 92505
CCDM RAdeg 282.77656306 DEdeg -20.30009194 EpRA 1990 1.76
EpDE 1990 1.66 E RAdeg 4.9 E DEdeg 5.7 Posflg
Corr 0.0
SAO
SAO 187358 DelFlag RA1950 PmRA1950 0.0016
DE1950 PmDE1950 -0.014 Vmag 7.6 SpType B9
Double code Source 70 CatNum 25844 DM BD-20 5288
DMcomp BDsup HD 174403 M HD 0
GC 25844 RA1950rad 4.92244875 DE1950rad -0.35534859 PmRA2000 0.0017
PmDE2000 -0.014
Hipparcos
Catalog H HIP 92505 Proxy RAhms 18 51 06.38
DEdms -20 18 00.3 Vmag 7.5 VarFlag 2 R Vmag G
RAdeg 282.777 DEdeg -20.3001 AstroRef Plx 1.47
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 174403 BD BD-20 5288
CD CP Dm number -20 5288 VIred 0.24
SpType B8II/III R SpType Coord arcsec 2000 185106.38-201800.3
Hipparcos 2
HIP 92505 Sn 5 So 0 Nc 1
RArad 4.9353820661 DErad -0.3543033833 Plx 0.68 PmRA -4.26
PmDE -4.84 E RArad 0.61 E DErad 0.37 E Plx 0.68
E pmRA 0.71 E pmDE 0.47 Hpmag 7.5545 E Hpmag 0.0013
SHp 0.009 VA 0 BV 0.112 E BV 0.015
VI 0.13
 
 
18510-2018 C
 
 
Coord arcsec 2000 185059.95-201745.4 Mag 18.1 Spectral class K7 (yellow-orange) Calc delta mag 11.4
Calc coord yes