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Current system
19197-2836
B 433 AB
HD 180957


Nearby doubles
14' : 19197-2849
RST2101

25' : 19189-2814
HDS2733

42' : 19224-2858
RST2105

45' : 19179-2759
KPP4144

45' : 19231-2833
RSS 520AB

46' : 19192-2751
B 432

47' : 19227-2859
MRA 22

58' : 19240-2842
DAW 111

58' : 19173-2747
LDS4807

64' : 19221-2931
SHY 753AB

66' : 19166-2928
UC 3873AB

68' : 19174-2735
UC 3879

73' : 19246-2919
LDS5876

76' : 19208-2950
UC 3896

77' : 19165-2940
KPP4143

78' : 19252-2900
UC 3926

78' : 19253-2900
UC 3929

80' : 19144-2916
HDO 152

83' : 19251-2919
HJ 5113

84' : 19239-2939
HJ 5110AB

93' : 19225-3002
JSP 805

95' : 19212-2704
B 434

101' : 19145-2723
OCC 702

102' : 19147-2719
COO 234AB

103' : 19258-2733
RST2109

104' : 19131-2933
UC 3849



Selections
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Binary Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19197-2836 B 433 AB (HD 180957)

 
 
19h 19m 39.44s -28° 36' 18.8" P.A. 276.00 sep 0.1 mag 9.89,10.08 Sp G1V dist. 119.05 pc (388.34 l.y.)
 
 
Coord 2000 19197-2836 Discov num B   433 Comp AB Coord arcsec 2000 19 19 39.44 -28 36 18.8
Date first 1926 Date last 2021 Obs 14
Pa first 174 Pa last 276.1 P.A. Now (θ) 276.1°
Sep first 0.4 Sep last 0.135 Sep. Now (ρ) 0.135"
Mag pri 9.89 Mag sec 10.08 delta mag (ΔM) 0.19 Spectral class G1V (yellow)
Pri motion ra -017 Sec motion ra -017
Pri motion dec -027 Sec motion dec -027
Notes O (Orbital solution)
This double is physical.
 
 
19197-2836 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 180957 187969 19 19 39 -28 36 19 B 433 AB 2021 14 276 0.1 9.89 10.08 0.19 Y <===
Show 187969 19 19 39 -28 36 19 B 433 AC 2021 4 54 2.6 10.00 13.60 3.60
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 180957 Constellation Sagittarius SAO 187969 HIP 94985
Tycho2 6887-01586-1 Gaia DR2 6759572538660355840 HD 180957 ADS 12299
CD CD-2815665 CP CP-28 6878 Distance 119.05 Distance ly 388.34
 
 
ORBITAL ELEMENTS
 
 
Period (P)250y Periastron (T)2027.51y Semi-major axis (a)0.441a
Eccentricity (e)0.458 Inclination (i)57.2° Longitude of periastron (ω)97.7°
Node (Ω)219.7° Notes ReferenceTok2020e
Equinox Last observation2019 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 223.7 0.347
2001 224.9 0.340
2002 226.1 0.333
2003 227.3 0.325
2004 228.6 0.317
2005 230.0 0.309
2006 231.4 0.301
2007 233.0 0.292
2008 234.6 0.283
2009 236.4 0.273
2010 238.2 0.263
2011 240.3 0.253
2012 242.4 0.243
2013 244.8 0.233
2014 247.4 0.222
2015 250.3 0.211
2016 253.5 0.201
2017 257.0 0.190
2018 261.0 0.180
2019 265.4 0.170
2020 270.3 0.161
2021 275.8 0.152
2022 282.0 0.144
2023 288.8 0.138
2024 296.1 0.134
2025 303.8 0.131
2026 311.8 0.130
2027 319.7 0.131
2028 327.4 0.134
2029 334.7 0.139
2030 341.4 0.145


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds19197-2836a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19197-2836 B 433 AB (HD 180957) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb AJ 160, 7, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19197-2836 B 433 AB 2017 12 257 0.2 9.89 10.08 G1V 191939.44-283618.8
19197-2836 B 433 AB 2019 13 269 0.2 9.89 10.08 G1V 191939.44-283618.8
19197-2836 B 433 AB 2021 14 276 0.1 9.89 10.08 G1V 191939.44-283618.8

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

 
 
WDS 19197-2836 B 433 AB (HD 180957) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19197-2836 B 433 AB (HD 180957) : MEASURES
 
 
No records found.

 
 
WDS 19197-2836 (HD 180957) : VIRTUAL EYEPIECE
 
 

19197-2836 B 433A mag 9.89 Sp G1V 19197-2836 B 433B sep 0.1 P.A. 276.90 mag 10.08 19197-2836 B 433C sep 2.4 P.A. 50.30 mag 13.6 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 19197-2836 (HD 180957) : ALADIN DSS IMAGE @ 19h 19m 39.44s -28° 36' 18.8"
 
 
 
 
WDS 19197-2836 B 433 AB (HD 180957) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19197-2836 B 433AB distance=0' 19197-2849 RST2101 distance=14' 19189-2814 HDS2733 distance=25' 19224-2858 RST2105 distance=42' 19179-2759 KPP4144 distance=45' 19231-2833 RSS 520AB distance=45' 19231-2833 RSS 520Aa,Ab distance=45' 19192-2751 B 432 distance=46' 19227-2859 MRA 22 distance=47' 19240-2842 DAW 111 distance=58' 19173-2747 LDS4807 distance=58' 19221-2931 SHY 753AB distance=64' 19221-2931 TOK 423Aa,Ab distance=64' 19166-2928 UC 3873AB distance=66' 19166-2928 UC 3873AC distance=66' 19174-2735 UC 3879 distance=68' 19246-2919 LDS5876 distance=73' 19208-2950 UC 3896 distance=76' 19165-2940 KPP4143 distance=77' 19252-2900 UC 3926 distance=78' 19253-2900 UC 3929 distance=78' 19144-2916 HDO 152 distance=80' 19251-2919 HJ 5113 distance=83' 19239-2939 HJ 5110AB distance=84' 19239-2939 HJ 5110Aa,Ab distance=84' 19225-3002 JSP 805 distance=93' 19212-2704 B 434 distance=95' 19145-2723 OCC 702 distance=101' 19147-2719 COO 234AB distance=102' 19147-2719 COO 234AC distance=102' 19258-2733 RST2109 distance=103' 19131-2933 UC 3849 distance=104' 19263-2741 BAR 47 distance=105' 19118-2849 RST2093 distance=105' 19145-2713 UC 3861 distance=108' 19137-2724 OCC 120 distance=108' 19123-2747 UC 3844 distance=109' 19279-2811 WJG 6 distance=112' 19279-2930 BU 423 distance=121' 19258-3006 I 1401AB distance=121' 19258-3006 WSI 91Ba,Bb distance=121' 19133-2707 UC 3850 distance=123' 19107-2746 RST2092 distance=128' 19101-2907 I 9005 distance=130' 19101-2755 RSS 514 distance=133' 19122-2702 SKF2074 distance=137' 19157-3043 UC 3869 distance=137' 19221-2619 UC 3906 distance=141' 19120-3016 RSS 515 distance=142' 19273-2656 OCC 746 distance=143' 19294-2942 WAL 3CD distance=143' 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 19197-2836 B 433 AB 276 0.1
Show 19197-2836 B 433 AC 54 2.6
Show 19197-2849 RST2101 147 1.2 14
Show 19189-2814 HDS2733 317 0.6 25
Show 19224-2858 RST2105 261 6.6 42
Show 19179-2759 KPP4144 320 4.4 45
Show 19231-2833 RSS 520 AB 350 10.0 45
Show 19231-2833 RSS 520 Aa,Ab 157 0.4 45
Show 19192-2751 B 432 13 8.0 46
Show 19227-2859 MRA 22 351 1.0 47
Show 19240-2842 DAW 111 274 1.3 58
Show 19173-2747 LDS4807 217 101.1 58
Show 19221-2931 SHY 753 AB 227 435.7 64
Show 19221-2931 TOK 423 Aa,Ab 36 0.8 64
Show 19166-2928 UC 3873 AB 144 27.3 66
Show 19166-2928 UC 3873 AC 279 47.9 66
Show 19174-2735 UC 3879 322 101.6 68
Show 19246-2919 LDS5876 357 54.0 73
Show 19208-2950 UC 3896 99 17.3 76
Show 19165-2940 KPP4143 169 1.0 77
Show 19252-2900 UC 3926 324 55.6 78
Show 19253-2900 UC 3929 323 61.5 78
Show 19144-2916 HDO 152 254 1.0 80
Show 19251-2919 HJ 5113 148 9.8 83
Show 19239-2939 HJ 5110 AB 117 5.8 84
Show 19239-2939 HJ 5110 Aa,Ab 216 0.1 84
Show 19225-3002 JSP 805 321 2.0 93
Show 19212-2704 B 434 349 0.6 95
Show 19145-2723 OCC 702 -1 0.1 101
Show 19147-2719 COO 234 AB 325 2.3 102
Show 19147-2719 COO 234 AC 55 63.1 102
Show 19258-2733 RST2109 193 1.0 103
Show 19131-2933 UC 3849 133 19.7 104
Show 19263-2741 BAR 47 202 1.7 105
Show 19118-2849 RST2093 171 1.5 105
Show 19145-2713 UC 3861 167 36.7 108
Show 19137-2724 OCC 120 -1 0.1 108
Show 19123-2747 UC 3844 80 80.2 109
Show 19279-2811 WJG 6 239 0.7 112
Show 19279-2930 BU 423 127 1.2 121
Show 19258-3006 I 1401 AB 112 0.6 121
Show 19258-3006 WSI 91 Ba,Bb 58 0.1 121
Show 19133-2707 UC 3850 125 31.2 123
Show 19107-2746 RST2092 101 1.7 128
Show 19101-2907 I 9005 244 3.3 130
Show 19101-2755 RSS 514 317 10.0 133
Show 19122-2702 SKF2074 106 8.3 137
Show 19157-3043 UC 3869 210 20.2 137
Show 19221-2619 UC 3906 89 29.8 141
Show 19120-3016 RSS 515 311 10.0 142
Show 19273-2656 OCC 746 -1 0.1 143

 
 
WDS 19197-2836 : COMPONENTS
 
 
  A B
B pa=276.9°
sep=0.12"
 
C pa=50.3°
sep=2.37"
pa=52.3°
sep=2.46"
 
 
19197-2836 A
 
 
Name HD 180957 Coord arcsec 2000 191939.44-283618.8 Mag 9.89 Spectral class G1V (yellow)
PmRA -17.00 PmDE -27.0 SAO 187969 HIP 94985
Tycho2 6887-01586-1 HD 180957 CD CD-2815665 CP CP-28 6878
Tycho2
Tycho2 6887-01586-1 Pflag RAmdeg 289.91430473 DEmdeg -28.60526053
PmRA -17.1 PmDE -26.9 E RAmdeg 18 E DEmdeg 18
E pmRA 1.7 E pmDE 1.6 EpRAm 1988.26 EpDEm 1986.89
Num 6 Q RAmdeg 1.0 Q DEmdeg 1.1 Q pmRA 1.1
Q pmDE 1.1 BTmag 9.953 E BTmag 0.034 VTmag 9.324
E VTmag 0.028 Prox 999 TYC T HIP 94985
CCDM AB RAdeg 289.91434861 DEdeg -28.60519694 EpRA 1990 1.68
EpDE 1990 1.57 E RAdeg 18.5 E DEdeg 19.7 Posflg P
Corr 0.0
SAO
SAO 187969 DelFlag RA1950 PmRA1950 -0.0032
DE1950 PmDE1950 -0.022 Vmag 8.8 SpType G0
Double code Source 24 CatNum 12634 DM CD-2815665
DMcomp BDsup HD 180957 M HD 0
GC RA1950rad 5.04627724 DE1950rad -0.50087214 PmRA2000 -0.0033
PmDE2000 -0.023
Hipparcos
Catalog H HIP 94985 Proxy H RAhms 19 19 39.45
DEdms -28 36 18.6 Vmag 9.2 VarFlag R Vmag H
RAdeg 289.914 DEdeg -28.6052 AstroRef A Plx 8.49
CCDM 19197-2836 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 214 Rho 0.394 HD 180957 BD
CD CD-2815665 CP CP-28 6878 Dm number -2815665 VIred 0.64
SpType G1V R SpType Coord arcsec 2000 191939.45-283618.6
Hipparcos 2
HIP 94985 Sn 15 So 3 Nc 2
RArad 5.0599603709 DErad -0.4992541699 Plx 8.4 PmRA -23.67
PmDE -31.89 E RArad 1.88 E DErad 1.59 E Plx 1.83
E pmRA 2 E pmDE 1.65 Hpmag 9.3321 E Hpmag 0.0037
SHp 0.02 VA 0 BV 0.605 E BV 0.034
VI 0.67
CCDM
Ccdm 19197-2836 RComp Comp A Note1
Note2 Discov num DRAs -2.69 DDEs -18.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.6 Sp G0 PmNote *
PmRA -42 PmDE -22 Dm number -2815665 Cat1 CD
Name2 187969 Cat2 SAO HD 180957 M HD
ADS BDS A12299 M ADS BDS N IDS IDS 19134S2847A
HIC 94985
 
 
19197-2836 B
 
 
Coord arcsec 2000 191939.43-283618.8 Mag 10.08 PmRA -17.00 PmDE -27.0
Calc delta mag 0.19 Calc coord yes
CCDM
Ccdm 19197-2836 RComp Comp B Note1
Note2 Discov num B 433 DRAs DDEs
R dRAs Year 1926 Theta 176 Rho 0.4
Obs 3 Vmag 9.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12299 M ADS BDS N IDS IDS 19134S2847B
HIC 94985
 
 
19197-2836 C
 
 
Coord arcsec 2000 191939.58-283617.3 Mag 13.6 Calc delta mag 3.71 Calc coord yes