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Current system
20178-4011
DUN 230
HD 192724


Nearby doubles
9' : 20174-4004
WG 252

14' : 20185-4000
B 474AB

30' : 20190-4037
KPP2109

41' : 20187-3932
UC 4143

41' : 20199-3938
UC 4148

46' : 20174-3926
UC 4138

49' : 20148-3936
CRU9012

61' : 20140-4053
SKF1163

66' : 20123-3956
WG 251

68' : 20134-3927
TDT2102

73' : 20235-4044
WG 255

79' : 20243-3944
HDS2917

80' : 20247-4019
KPP 968

89' : 20112-3926
HDS2878

92' : 20166-3841
KPP1571

100' : 20125-4130
RST2136

103' : 20266-3955
SCT 2

113' : 20092-4105
GRV1264

116' : 20276-4038
RSS 547

116' : 20079-3952
UC 4093

116' : 20079-3951
CRU9011AB

119' : 20108-3845
YMG 90

119' : 20081-3929
RST2134

121' : 20134-3821
B 472

123' : 20123-3826
SKF2085

123' : 20272-3913
RST2140



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

20178-4011 DUN 230 (HD 192724)

 
 
20h 17m 49.68s -40° 11' 05.1" P.A. 117.00 sep 9.7 mag 7.42,7.72 Sp F8IV+F7V dist. 80.06 pc (261.16 l.y.)
 
 
Coord 2000 20178-4011 Discov num DUN 230 Comp Coord arcsec 2000 20 17 49.68 -40 11 05.1
Date first 1836 Date last 2018 Obs 43
Pa first 115 Pa last 117.4 P.A. Now (θ) 117.4°
Sep first 11.4 Sep last 9.675 Sep. Now (ρ) 9.675"
Mag pri 7.42 Mag sec 7.72 delta mag (ΔM) 0.3 Spectral class F8IV+F7V (yellow-white/yellow-white)
Pri motion ra +042 Sec motion ra +042
Pri motion dec +012 Sec motion dec +012
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 192724 Constellation Sagittarius SAO 230134 HIP 100045
Tycho2 7952-02340-1 Gaia DR2 6692595444253828480 HD 192724 GC 28177
CD CD-4013785 CP CP-40 9268 Distance 80.06 Distance ly 261.16
 
 
WDS 20178-4011 DUN 230 (HD 192724) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Dun1829 Ma - Dunlop, J. 1829MmRAS...3..257D
Dun1829 MemRAS 3, 257, 1829
Dun1829 some measures corrected in LRR2022
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20178-4011 DUN 230 2000 34 117 9.7 7.42 7.72 F8: D 201749.68-401105.1
20178-4011 DUN 230 2008 35 118 9.7 7.42 7.72 F8: D 201749.68-401105.1
20178-4011 DUN 230 2010 36 112 9.9 7.42 7.72 F8: D 201749.68-401105.1
20178-4011 DUN 230 2015 40 117 9.7 7.42 7.72 F8IV+F7V 201749.68-401105.1
20178-4011 DUN 230 2017 43 118 9.6 7.42 7.72 F8IV+F7V 201749.68-401105.1
20178-4011 DUN 230 2018 43 117 9.7 7.42 7.72 F8IV+F7V 201749.68-401105.1

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

 
 
WDS 20178-4011 DUN 230 (HD 192724) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20178-4011 DUN 230 (HD 192724) : MEASURES
 
 
No records found.

 
 
WDS 20178-4011 (HD 192724) : VIRTUAL EYEPIECE
 
 

20178-4011 DUN 230A mag 7.42 Sp F8IV 20178-4011 DUN 230B sep 7.9 P.A. 124.20 mag 7.72 Sp F7V 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 20178-4011 (HD 192724) : ALADIN DSS IMAGE @ 20h 17m 49.68s -40° 11' 05.1"
 
 
 
 
WDS 20178-4011 DUN 230 (HD 192724) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20178-4011 DUN 230 distance=0' 20174-4004 WG 252 distance=9' 20185-4000 B 474AB distance=14' 20185-4000 WG 254AC distance=14' 20190-4037 KPP2109 distance=30' 20187-3932 UC 4143 distance=41' 20199-3938 UC 4148 distance=41' 20174-3926 UC 4138 distance=46' 20148-3936 CRU9012 distance=49' 20140-4053 SKF1163 distance=61' 20123-3956 WG 251 distance=66' 20134-3927 TDT2102 distance=68' 20235-4044 WG 255 distance=73' 20243-3944 HDS2917 distance=79' 20247-4019 KPP 968 distance=80' 20112-3926 HDS2878 distance=89' 20166-3841 KPP1571 distance=92' 20125-4130 RST2136 distance=100' 20266-3955 SCT 2 distance=103' 20092-4105 GRV1264 distance=113' 20276-4038 RSS 547 distance=116' 20079-3952 UC 4093 distance=116' 20079-3951 CRU9011AB distance=116' 20079-3951 CRU9011AC distance=116' 20108-3845 YMG 90 distance=119' 20081-3929 RST2134 distance=119' 20134-3821 B 472 distance=121' 20123-3826 SKF2085 distance=123' 20272-3913 RST2140 distance=123' 20225-4203 HJ 5190AB distance=124' 20225-4203 HJ 5190AC distance=124' 20276-4110 UC 4190 distance=126' 20217-3813 KPP 471 distance=127' 20068-4031 WG 250 distance=128' 20118-3825 TOK 904 distance=132' 20090-3843 SEE 407 distance=135' 20296-4000 UC 4200 distance=136' 20055-4034 UC 4080 distance=143' 20056-4048 UC 4083 distance=145' 20200-3745 TVB 313 distance=148' 20239-4225 BU 763AB distance=151' 20239-4225 I 1626AC distance=151' 20239-4225 SEE 511AD distance=151' 20055-4109 UC 4081 distance=152' 20240-4231 DON 984 distance=157' 20168-3733 B 473 distance=159' 20061-4138 CBL 177 distance=159' 20076-4200 RSS 541 distance=160' 20319-4054 GLI 259AB distance=166' 20319-4054 I 1627AC distance=166' 20064-3829 RST2132 distance=167' 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 20178-4011 DUN 230 117 9.7
Show 20174-4004 WG 252 99 3.3 9
Show 20185-4000 B 474 AB 28 3.3 14
Show 20185-4000 WG 254 AC 20 14.3 14
Show 20190-4037 KPP2109 91 17.1 30
Show 20187-3932 UC 4143 351 60.9 41
Show 20199-3938 UC 4148 227 39.2 41
Show 20174-3926 UC 4138 291 62.0 46
Show 20148-3936 CRU9012 115 17.1 49
Show 20140-4053 SKF1163 12 8.5 61
Show 20123-3956 WG 251 306 9.6 66
Show 20134-3927 TDT2102 269 0.5 68
Show 20235-4044 WG 255 33 5.3 73
Show 20243-3944 HDS2917 204 12.3 79
Show 20247-4019 KPP 968 335 7.9 80
Show 20112-3926 HDS2878 37 0.3 89
Show 20166-3841 KPP1571 71 11.9 92
Show 20125-4130 RST2136 48 0.6 100
Show 20266-3955 SCT 2 319 28.4 103
Show 20092-4105 GRV1264 114 1.9 113
Show 20276-4038 RSS 547 12 10.0 116
Show 20079-3952 UC 4093 108 23.5 116
Show 20079-3951 CRU9011 AB 185 82.5 116
Show 20079-3951 CRU9011 AC 96 80.1 116
Show 20108-3845 YMG 90 343 1.4 119
Show 20081-3929 RST2134 50 0.3 119
Show 20134-3821 B 472 24 1.0 121
Show 20123-3826 SKF2085 2 18.8 123
Show 20272-3913 RST2140 47 1.8 123
Show 20225-4203 HJ 5190 AB 312 40.0 124
Show 20225-4203 HJ 5190 AC 283 56.8 124
Show 20276-4110 UC 4190 62 27.4 126
Show 20217-3813 KPP 471 209 3.7 127
Show 20068-4031 WG 250 330 16.7 128
Show 20118-3825 TOK 904 315 4.2 132
Show 20090-3843 SEE 407 259 3.3 135
Show 20296-4000 UC 4200 302 40.7 136
Show 20055-4034 UC 4080 89 18.9 143
Show 20056-4048 UC 4083 34 47.0 145
Show 20200-3745 TVB 313 267 2.5 148
Show 20239-4225 BU 763 AB 180 0.5 151
Show 20239-4225 I 1626 AC 268 18.6 151
Show 20239-4225 SEE 511 AD 219 29.8 151
Show 20055-4109 UC 4081 352 14.1 152
Show 20240-4231 DON 984 258 0.9 157
Show 20168-3733 B 473 183 2.4 159
Show 20061-4138 CBL 177 9 23.7 159
Show 20076-4200 RSS 541 318 10.0 160
Show 20319-4054 GLI 259 AB 159 4.1 166
Show 20319-4054 I 1627 AC 346 17.6 166
Show 20064-3829 RST2132 119 0.4 167

 
 
WDS 20178-4011 : COMPONENTS
 
 
  A
B pa=124.2°
sep=7.93"
 
 
20178-4011 A
 
 
Componente originario normalizzato AB Name HD 192724 Coord arcsec 2000 201749.68-401105.1 Mag 7.42
Spectral class F8IV (yellow-white) PmRA 42.00 PmDE 12.0 SAO 230134
HIP 100045 Tycho2 7952-02340-1 HD 192724 GC 28177
CD CD-4013785 CP CP-40 9268
Tycho2
Tycho2 7952-02340-1 Pflag RAmdeg 304.45698939 DEmdeg -40.18475605
PmRA 44.8 PmDE 12.7 E RAmdeg 5 E DEmdeg 6
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.57 EpDEm 1991.39
Num 8 Q RAmdeg 1.6 Q DEmdeg 1.2 Q pmRA 1.6
Q pmDE 1.1 BTmag 8.006 E BTmag 0.017 VTmag 7.418
E VTmag 0.011 Prox 97 TYC T HIP 100045
CCDM A RAdeg 304.45685444 DEdeg -40.18478556 EpRA 1990 1.74
EpDE 1990 1.63 E RAdeg 5.2 E DEdeg 5.8 Posflg
Corr -0.2
SAO
SAO 230134 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 0.01 Vmag 7.6 SpType F5
Double code Source 70 CatNum 28177 DM CD-4013785
DMcomp A BDsup HD 192724 M HD 0
GC 28177 RA1950rad 5.29915595 DE1950rad -0.70407981 PmRA2000 0.0004
PmDE2000 0.008
Hipparcos
Catalog H HIP 100045 Proxy H RAhms 20 17 49.64
DEdms -40 11 05.2 Vmag 6.72 VarFlag R Vmag H
RAdeg 304.457 DEdeg -40.1848 AstroRef A Plx 17.25
CCDM 20178-4011 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 117 Rho 9.709 HD 192724 BD
CD CD-4013785 CP CP-40 9268 Dm number -4013785 VIred 0.6
SpType F7/G0 +F8/G2 R SpType Coord arcsec 2000 201749.64-401105.2
Hipparcos 2
HIP 100045 Sn 15 So 3 Nc 2
RArad 5.313774457 DErad -0.7013568021 Plx 12.49 PmRA 43.65
PmDE 13.3 E RArad 1.23 E DErad 0.95 E Plx 1.63
E pmRA 1.67 E pmDE 1.67 Hpmag 6.8321 E Hpmag 0.001
SHp 0.013 VA 0 BV 0.518 E BV 0.008
VI 0.59
CCDM
Ccdm 20178-4011 RComp Comp A Note1
Note2 Discov num DRAs 1.69 DDEs -5.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.7 Sp F5 PmNote *
PmRA 46 PmDE 9 Dm number -4013785 Cat1 CD
Name2 230134 Cat2 SAO HD 192724 M HD
ADS BDS M ADS BDS N IDS IDS 20111S4030A
HIC 100045
 
 
20178-4011 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 201750.25-401109.6 Mag 7.72 Spectral class F7V (yellow-white)
PmRA 42.00 PmDE 12.0 HIP 100045 Tycho2 7952-02341-1
Calc delta mag 0.3 Calc coord yes
Tycho2
Tycho2 7952-02341-1 Pflag RAmdeg 304.46012494 DEmdeg -40.18597172
PmRA 38.8 PmDE 13.4 E RAmdeg 6 E DEmdeg 7
E pmRA 1.4 E pmDE 1.3 EpRAm 1991.45 EpDEm 1991.15
Num 10 Q RAmdeg 1.3 Q DEmdeg 1.6 Q pmRA 1.3
Q pmDE 1.5 BTmag 8.234 E BTmag 0.017 VTmag 7.724
E VTmag 0.012 Prox 97 TYC T HIP 100045
CCDM B RAdeg 304.46000778 DEdeg -40.18600333 EpRA 1990 1.73
EpDE 1990 1.53 E RAdeg 5.6 E DEdeg 6.9 Posflg
Corr -0.1
Hipparcos
Catalog H HIP 100045 Proxy H RAhms 20 17 49.64
DEdms -40 11 05.2 Vmag 6.72 VarFlag R Vmag H
RAdeg 304.457 DEdeg -40.1848 AstroRef A Plx 17.25
CCDM 20178-4011 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 117 Rho 9.709 HD 192724 BD
CD CD-4013785 CP CP-40 9268 Dm number -4013785 VIred 0.6
SpType F7/G0 +F8/G2 R SpType Coord arcsec 2000 201749.64-401105.2
Hipparcos 2
HIP 100045 Sn 15 So 3 Nc 2
RArad 5.313774457 DErad -0.7013568021 Plx 12.49 PmRA 43.65
PmDE 13.3 E RArad 1.23 E DErad 0.95 E Plx 1.63
E pmRA 1.67 E pmDE 1.67 Hpmag 6.8321 E Hpmag 0.001
SHp 0.013 VA 0 BV 0.518 E BV 0.008
VI 0.59
CCDM
Ccdm 20178-4011 RComp Comp B Note1
Note2 Discov num DUN 230 DRAs 2.43 DDEs -9.8
R dRAs 91 Year 1836 Theta 116 Rho 9.8
Obs 15 Vmag 8.0 Sp PmNote *
PmRA 40 PmDE 9 Dm number Cat1
Name2 230135 Cat2 SAO HD M HD
ADS BDS M ADS BDS N IDS IDS 20111S4030B
HIC 100045