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Current system
18464-2755
RST 2073
HD 173428


Nearby doubles
26' : 18450-2813
B 403

35' : 18463-2721
B 405

48' : 18496-2736
OCC 153

50' : 18490-2830
RST2077

53' : 18457-2847
B 404

57' : 18457-2659
OCC9185

62' : 18460-2856
TSN 187

66' : 18456-2651
I 1382

79' : 18459-2637
J 2229

81' : 18494-2904
OL 21

82' : 18511-2846
BRT3079

85' : 18400-2743
SKF2132

85' : 18502-2647
J 1637

90' : 18506-2646
B 409

91' : 18440-2920
LDS 651

91' : 18531-2745
I 1031

93' : 18396-2817
J 1596

95' : 18444-2926
SEE 357AB

96' : 18467-2930
TOK 366AB

98' : 18466-2932
TDS 943

102' : 18389-2736
RST2069

104' : 18517-2641
RST2079

111' : 18544-2727
B 411

113' : 18422-2617
RST3190

114' : 18401-2638
B 397

116' : 18386-2850
TDT 971



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

18464-2755 RST 2073 (HD 173428)

 
 
18h 46m 19.73s -27° 54' 57.6" P.A. 149.00 sep 0.4 mag 10.10,10.10 Sp G2V
 
 
Coord 2000 18464-2755 Discov num RST2073 Comp Coord arcsec 2000 18 46 19.73 -27 54 57.6
Date first 1931 Date last 2018 Obs 10
Pa first 57 Pa last 149.4 P.A. Now (θ) 145.1°
Sep first 0.3 Sep last 0.35 Sep. Now (ρ) 0.388"
Mag pri 10.10 Mag sec 10.10 delta mag (ΔM) 0 Spectral class G2V (yellow)
Pri motion ra +018 Sec motion ra
Pri motion dec +014 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173428 Constellation Sagittarius Tycho2 6867-01366-1 HD 173428
 
 
ORBITAL ELEMENTS
 
 
Period (P)243.5y± 13.5 Periastron (T)1983y± 0.28 Semi-major axis (a)0.406a± 0.015
Eccentricity (e)0.544± 0.03 Inclination (i)128°± 1.5 Longitude of periastron (ω)214°± 3
Node (Ω)130.6°± 2.5 Notes ReferenceDoc2018l
Equinox2000 Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 185.7 0.179
2001 181.9 0.188
2002 178.6 0.198
2003 175.5 0.208
2004 172.7 0.217
2005 170.2 0.227
2006 167.8 0.237
2007 165.7 0.247
2008 163.7 0.257
2009 161.9 0.267
2010 160.2 0.276
2011 158.6 0.286
2012 157.1 0.295
2013 155.7 0.305
2014 154.4 0.314
2015 153.1 0.323
2016 151.9 0.331
2017 150.8 0.340
2018 149.8 0.348
2019 148.7 0.357
2020 147.8 0.365
2021 146.8 0.372
2022 146.0 0.380
2023 145.1 0.388
2024 144.3 0.395
2025 143.5 0.402
2026 142.7 0.409
2027 142.0 0.416
2028 141.3 0.423
2029 140.6 0.429
2030 139.9 0.436


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


 
  


wds18464-2755c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18464-2755 RST 2073 (HD 173428) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Doc2018l orb - Docobo, J.A., Gomez, J., Campo, P., Andrade, M., Horch, E.P., Costa, E. & 2018MNRAS.482.4096D
Doc2018l Mendez, R.A.
 
 
DISCOVERER
 
 
idgroup discov author
1 RST Rossiter, R.A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18464-2755 RST2073 1985 8 275 0.2 10.10 10.10 G2V O 184619.73-275457.6
18464-2755 RST2073 2016 9 332 0.3 10.10 10.10 G2V O 184619.73-275457.6
18464-2755 RST2073 2018 10 149 0.4 10.10 10.10 G2V O 184619.73-275457.6

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

 
 
WDS 18464-2755 RST 2073 (HD 173428) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18464-2755 RST 2073 (HD 173428) : MEASURES
 
 
No records found.

 
 
WDS 18464-2755 (HD 173428) : VIRTUAL EYEPIECE
 
 

18464-2755 RST2073A mag 10.1 Sp G2V 18464-2755 RST2073B sep 0.3 P.A. 152.40 mag 10.1 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 18464-2755 (HD 173428) : ALADIN DSS IMAGE @ 18h 46m 19.73s -27° 54' 57.6"
 
 
 
 
WDS 18464-2755 RST 2073 (HD 173428) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18464-2755 RST2073 distance=1' 18450-2813 B 403 distance=26' 18463-2721 B 405 distance=35' 18496-2736 OCC 153 distance=48' 18490-2830 RST2077 distance=50' 18457-2847 B 404 distance=53' 18457-2659 OCC9185 distance=57' 18460-2856 TSN 187 distance=62' 18456-2651 I 1382 distance=66' 18459-2637 J 2229 distance=79' 18494-2904 OL 21 distance=81' 18511-2846 BRT3079 distance=82' 18400-2743 SKF2132 distance=85' 18502-2647 J 1637 distance=85' 18506-2646 B 409 distance=90' 18440-2920 LDS 651 distance=91' 18531-2745 I 1031 distance=91' 18396-2817 J 1596 distance=93' 18444-2926 SEE 357AB distance=95' 18444-2926 B 9035AC distance=95' 18444-2926 B 9035AD distance=95' 18444-2926 B 9035AE distance=95' 18467-2930 TOK 366AB distance=96' 18467-2930 TOK 366AC distance=96' 18466-2932 TDS 943 distance=98' 18389-2736 RST2069 distance=102' 18517-2641 RST2079 distance=104' 18544-2727 B 411 distance=111' 18422-2617 RST3190 distance=113' 18401-2638 B 397 distance=114' 18386-2850 TDT 971 distance=116' 18489-2603 B 406 distance=118' 18554-2801 TVB 305 distance=121' 18398-2920 RSS 487 distance=122' 18447-2959 B 2460 distance=126' 18560-2808 SEE 364 distance=129' 18447-2548 SEE 358 distance=129' 18512-2601 OCC 66 distance=132' 18444-2546 RST3196 distance=133' 18416-2557 BRT3074 distance=134' 18488-3006 B 2462 distance=135' 18405-2953 SEE 356 distance=141' 18497-2538 B 407 distance=145' 18514-3008 TDT1088 distance=149' 18359-2849 HJ 5051AB distance=149' 18359-2849 HJ 5051AC distance=149' 18359-2849 DOO 71CD distance=150' 18553-2618 BED 1Aa,Ab (Nunki) distance=154' 18553-2618 SMY 4AB (Nunki) distance=154' 18461-3029 TDT1043 distance=155' 18346-2734 I 1027CD distance=157' 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 18464-2755 RST2073 149 0.4 1
Show 18450-2813 B 403 76 2.4 26
Show 18463-2721 B 405 136 0.5 35
Show 18496-2736 OCC 153 -1 0.1 48
Show 18490-2830 RST2077 164 0.6 50
Show 18457-2847 B 404 238 5.0 53
Show 18457-2659 OCC9185 10 0.2 57
Show 18460-2856 TSN 187 172 0.4 62
Show 18456-2651 I 1382 200 0.4 66
Show 18459-2637 J 2229 26 3.7 79
Show 18494-2904 OL 21 152 2.1 81
Show 18511-2846 BRT3079 233 4.0 82
Show 18400-2743 SKF2132 237 12.4 85
Show 18502-2647 J 1637 16 5.2 85
Show 18506-2646 B 409 258 5.2 90
Show 18440-2920 LDS 651 209 35.8 91
Show 18531-2745 I 1031 349 0.4 91
Show 18396-2817 J 1596 105 8.2 93
Show 18444-2926 SEE 357 AB 291 14.5 95
Show 18444-2926 B 9035 AC 313 14.5 95
Show 18444-2926 B 9035 AD 349 10.8 95
Show 18444-2926 B 9035 AE 277 31.3 95
Show 18467-2930 TOK 366 AB 260 0.3 96
Show 18467-2930 TOK 366 AC 293 9.2 96
Show 18466-2932 TDS 943 226 0.9 98
Show 18389-2736 RST2069 123 1.7 102
Show 18517-2641 RST2079 197 1.9 104
Show 18544-2727 B 411 40 4.1 111
Show 18422-2617 RST3190 152 0.3 113
Show 18401-2638 B 397 193 1.2 114
Show 18386-2850 TDT 971 163 0.5 116
Show 18489-2603 B 406 315 1.7 118
Show 18554-2801 TVB 305 192 2.0 121
Show 18398-2920 RSS 487 303 11.5 122
Show 18447-2959 B 2460 102 9.1 126
Show 18560-2808 SEE 364 127 0.9 129
Show 18447-2548 SEE 358 69 1.2 129
Show 18512-2601 OCC 66 -1 0.1 132
Show 18444-2546 RST3196 71 0.2 133
Show 18416-2557 BRT3074 25 4.7 134
Show 18488-3006 B 2462 145 6.9 135
Show 18405-2953 SEE 356 133 3.1 141
Show 18497-2538 B 407 358 0.8 145
Show 18514-3008 TDT1088 141 2.1 149
Show 18359-2849 HJ 5051 AB 237 9.3 149
Show 18359-2849 HJ 5051 AC 296 91.6 149
Show 18359-2849 DOO 71 CD 34 4.3 150
Show Nunki 18553-2618 BED 1 Aa,Ab 202 0.0 154
Show Nunki 18553-2618 SMY 4 AB 239 349.0 154
Show 18461-3029 TDT1043 248 0.4 155
Show 18346-2734 I 1027 CD 69 1.9 157

 
 
WDS 18464-2755 : COMPONENTS
 
 
  A
B pa=152.4°
sep=0.34"
 
 
18464-2755 A
 
 
Componente originario normalizzato AB Name HD 173428 Coord arcsec 2000 184619.73-275457.6 Mag 10.1
Spectral class G2V (yellow) PmRA 18.00 PmDE 14.0 Tycho2 6867-01366-1
HD 173428
Tycho2
Tycho2 6867-01366-1 Pflag RAmdeg 281.58223169 DEmdeg -27.91600562
PmRA 17.8 PmDE 13.8 E RAmdeg 16 E DEmdeg 21
E pmRA 1.7 E pmDE 1.8 EpRAm 1988.73 EpDEm 1987.60
Num 4 Q RAmdeg 1.0 Q DEmdeg 0.4 Q pmRA 1.1
Q pmDE 0.4 BTmag 10.251 E BTmag 0.037 VTmag 9.543
E VTmag 0.028 Prox 999 TYC T HIP
CCDM RAdeg 281.58218583 DEdeg -27.91603667 EpRA 1990 1.83
EpDE 1990 1.67 E RAdeg 17.4 E DEdeg 23.2 Posflg
Corr 0.0
 
 
18464-2755 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 184619.74-275457.9 Mag 10.1 Calc coord yes