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Doubles in session


Current system
18368-2617
RST 3187 AB
HD 171595


Nearby doubles
8' : 18371-2612
VVV 58

17' : 18356-2617
B 396AB

21' : 18354-2607
TDT 949

49' : 18401-2638
B 397

56' : 18383-2525
HO 436

63' : 18399-2531
ARG 32AB

63' : 18322-2630
SKF2066

68' : 18416-2557
BRT3074

74' : 18422-2617
RST3190

78' : 18317-2541
OCC 264

82' : 18346-2734
I 1026AB

83' : 18389-2736
RST2069

87' : 18337-2502
VVV 57

93' : 18307-2700
RST2059

96' : 18400-2743
SKF2132

98' : 18303-2533
B 394

100' : 18350-2441
J 1746

105' : 18328-2747
KPP 417

105' : 18292-2640
B 391

107' : 18444-2546
RST3196

107' : 18290-2635
WNO 6

111' : 18447-2548
SEE 358

112' : 18311-2738
J 1632

112' : 18325-2753
SKF2131

113' : 18352-2427
J 1654

118' : 18413-2436
B 399



Selections
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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.

18368-2617 RST 3187 AB (HD 171595)

 
 
18h 36m 48.23s -26° 17' 21.6" P.A. 201.00 sep 0.1 mag 8.47,8.96 Sp G3V dist. 46.43 pc (151.45 l.y.)
 
 
Coord 2000 18368-2617 Discov num RST3187 Comp AB Coord arcsec 2000 18 36 48.23 -26 17 21.6
Date first 1934 Date last 2021 Obs 24
Pa first 231 Pa last 201.4 P.A. Now (θ) 209.7°
Sep first 0.2 Sep last 0.132 Sep. Now (ρ) 0.18"
Mag pri 8.47 Mag sec 8.96 delta mag (ΔM) 0.49 Spectral class G3V (yellow)
Pri motion ra -043 Sec motion ra
Pri motion dec -040 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
18368-2617 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 171595 187041 18 36 48 -26 17 22 RST 3187 AB 2021 24 201 0.1 8.47 8.96 0.49 Y <===
Show 187041 18 36 48 -26 17 22 RST 3187 AC 2015 9 41 12.7 8.47 13.80 5.33
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 171595 Constellation Sagittarius SAO 187041 HIP 91253
Tycho2 6866-00039-1 Gaia DR2 4075912835700087424 HD 171595 CD CD-2613320
CP CP-26 6518 Distance 46.43 Distance ly 151.45
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.37y± 0.18 Periastron (T)2017.3y± 0.16 Semi-major axis (a)0.1661a± 0.002
Eccentricity (e)0.364± 0.022 Inclination (i)70.1°± 0.8 Longitude of periastron (ω)7.2°± 2.9
Node (Ω)40.6°± 0.9 Notes ReferenceTok2016e
Equinox2000 Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 64.8 0.076
2001 118.1 0.047
2002 177.0 0.073
2003 196.9 0.118
2004 205.9 0.159
2005 211.5 0.191
2006 215.7 0.212
2007 219.3 0.224
2008 222.7 0.225
2009 226.1 0.217
2010 230.1 0.200
2011 234.9 0.174
2012 242.0 0.139
2013 254.3 0.099
2014 283.6 0.061
2015 343.7 0.055
2016 20.6 0.086
2017 38.5 0.106
2018 55.5 0.090
2019 91.9 0.053
2020 161.8 0.058
2021 191.7 0.102
2022 203.2 0.145
2023 209.7 0.180
2024 214.3 0.205
2025 218.0 0.221
2026 221.4 0.226
2027 224.8 0.222
2028 228.5 0.208
2029 233.0 0.185
2030 239.0 0.153


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


 
  


wds18368-2617a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18368-2617 RST 3187 AB (HD 171595) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2016e orb - Tokovinin, A. 2016AJ....152..138T
Tok2016e AJ 152, 138, 2016
 
 
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
18368-2617 RST3187 AB 2013 16 93 0.1 8.47 8.96 G3V 183648.23-261721.6
18368-2617 RST3187 AB 2014 17 117 0.1 8.47 8.96 G3V 183648.23-261721.6
18368-2617 RST3187 AB 2015 18 1 0.1 8.47 8.96 G3V 183648.23-261721.6
18368-2617 RST3187 AB 2017 20 44 0.1 8.47 8.96 G3V O 183648.23-261721.6
18368-2617 RST3187 AB 2018 21 61 0.1 8.47 8.96 G3V O 183648.23-261721.6
18368-2617 RST3187 AB 2019 22 132 0.0 8.47 8.96 G3V O 183648.23-261721.6
18368-2617 RST3187 AB 2020 23 189 0.1 8.47 8.96 G3V O 183648.23-261721.6
18368-2617 RST3187 AB 2021 24 201 0.1 8.47 8.96 G3V O 183648.23-261721.6

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

 
 
WDS 18368-2617 RST 3187 AB (HD 171595) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18368-2617 RST 3187 AB (HD 171595) : MEASURES
 
 
No records found.

 
 
WDS 18368-2617 (HD 171595) : VIRTUAL EYEPIECE
 
 

18368-2617 RST3187A mag 8.47 Sp G3V 18368-2617 RST3187B sep 0.1 P.A. 199.40 mag 8.96 18368-2617 RST3187C sep 12.2 P.A. 38.10 mag 13.8 Sp M 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 18368-2617 (HD 171595) : ALADIN DSS IMAGE @ 18h 36m 48.23s -26° 17' 21.6"
 
 
 
 
WDS 18368-2617 RST 3187 AB (HD 171595) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18368-2617 RST3187AB distance=0' 18371-2612 VVV 58 distance=8' 18356-2617 B 396AB distance=17' 18356-2617 OCC9050Ba,Bb distance=17' 18354-2607 TDT 949 distance=21' 18401-2638 B 397 distance=49' 18383-2525 HO 436 distance=56' 18399-2531 ARG 32AB distance=63' 18399-2531 ARG 32AC distance=63' 18399-2531 ARG 32AD distance=63' 18399-2531 OCC9182Aa,Ab distance=63' 18322-2630 SKF2066 distance=63' 18416-2557 BRT3074 distance=68' 18422-2617 RST3190 distance=74' 18317-2541 OCC 264 distance=78' 18346-2734 I 1026AB distance=82' 18346-2734 I 1026A,CD distance=82' 18346-2734 TOK 422Aa,Ab distance=82' 18346-2734 I 1027CD distance=83' 18389-2736 RST2069 distance=83' 18337-2502 VVV 57 distance=87' 18307-2700 RST2059 distance=93' 18400-2743 SKF2132 distance=96' 18303-2533 B 394 distance=98' 18350-2441 J 1746 distance=100' 18328-2747 KPP 417 distance=105' 18292-2640 B 391 distance=105' 18444-2546 RST3196 distance=107' 18290-2635 WNO 6 distance=107' 18447-2548 SEE 358 distance=111' 18311-2738 J 1632 distance=112' 18325-2753 SKF2131 distance=112' 18352-2427 J 1654 distance=113' 18413-2436 B 399 distance=118' 18281-2645 HDS2615AB distance=121' 18281-2645 ARY 126AC distance=121' 18289-2716 OCC 185 distance=121' 18286-2717 J 2214 distance=122' 18456-2651 I 1382 distance=123' 18280-2651 I 1366 distance=123' 18277-2638 BU 133 distance=124' 18459-2637 J 2229 distance=124' 18312-2757 RST2060Ba,Bb distance=125' 18457-2659 OCC9185 distance=126' 18396-2817 J 1596 distance=127' 18362-2409 J 2219 distance=129' 18289-2503 H N 125AB distance=130' 18280-2525 WFC 208 (Kaus Borealis) distance=131' 18448-2501 CHR 78 distance=133' 18266-2600 J 2213 distance=135' 18265-2601 J 2212 distance=136' 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 18368-2617 RST3187 AB 201 0.1
Show 18368-2617 RST3187 AC 41 12.7
Show 18371-2612 VVV 58 171 1.7 8
Show 18356-2617 B 396 AB 218 1.7 17
Show 18356-2617 OCC9050 Ba,Bb -1 0.0 17
Show 18354-2607 TDT 949 91 0.7 21
Show 18401-2638 B 397 193 1.2 49
Show 18383-2525 HO 436 178 4.1 56
Show 18399-2531 ARG 32 AB 220 7.0 63
Show 18399-2531 ARG 32 AC 285 53.2 63
Show 18399-2531 ARG 32 AD 217 80.2 63
Show 18399-2531 OCC9182 Aa,Ab -1 0.8 63
Show 18322-2630 SKF2066 282 17.5 63
Show 18416-2557 BRT3074 25 4.7 68
Show 18422-2617 RST3190 152 0.3 74
Show 18317-2541 OCC 264 -1 0.1 78
Show 18346-2734 I 1026 AB 41 9.0 82
Show 18346-2734 I 1026 A,CD 145 36.1 82
Show 18346-2734 TOK 422 Aa,Ab 102 0.1 82
Show 18346-2734 I 1027 CD 69 1.9 83
Show 18389-2736 RST2069 123 1.7 83
Show 18337-2502 VVV 57 162 8.0 87
Show 18307-2700 RST2059 5 1.9 93
Show 18400-2743 SKF2132 237 12.4 96
Show 18303-2533 B 394 197 0.2 98
Show 18350-2441 J 1746 165 3.9 100
Show 18328-2747 KPP 417 57 5.0 105
Show 18292-2640 B 391 65 0.2 105
Show 18444-2546 RST3196 71 0.2 107
Show 18290-2635 WNO 6 182 41.8 107
Show 18447-2548 SEE 358 69 1.2 111
Show 18311-2738 J 1632 165 5.3 112
Show 18325-2753 SKF2131 47 4.7 112
Show 18352-2427 J 1654 78 3.5 113
Show 18413-2436 B 399 49 3.5 118
Show 18281-2645 HDS2615 AB 186 0.3 121
Show 18281-2645 ARY 126 AC 135 54.1 121
Show 18289-2716 OCC 185 -1 0.1 121
Show 18286-2717 J 2214 119 5.3 122
Show 18456-2651 I 1382 200 0.4 123
Show 18280-2651 I 1366 225 0.4 123
Show 18277-2638 BU 133 230 0.6 124
Show 18459-2637 J 2229 26 3.7 124
Show 18312-2757 RST2060 Ba,Bb 8 0.6 125
Show 18457-2659 OCC9185 10 0.2 126
Show 18396-2817 J 1596 105 8.2 127
Show 18362-2409 J 2219 313 4.6 129
Show 18289-2503 H N 125 AB 107 2.5 130
Show Kaus Borealis 18280-2525 WFC 208 184 82.5 131
Show 18448-2501 CHR 78 192 0.1 133
Show 18266-2600 J 2213 90 6.5 135

 
 
WDS 18368-2617 : COMPONENTS
 
 
  A B
B pa=199.4°
sep=0.13"
 
C pa=38.1°
sep=12.17"
pa=37.9°
sep=12.29"
 
 
18368-2617 A
 
 
Name HD 171595 Coord arcsec 2000 183648.23-261721.6 Mag 8.47 Spectral class G3V (yellow)
PmRA -43.00 PmDE -40.0 SAO 187041 HIP 91253
Tycho2 6866-00039-1 HD 171595 CD CD-2613320 CP CP-26 6518
Tycho2
Tycho2 6866-00039-1 Pflag RAmdeg 279.20085882 DEmdeg -26.28944156
PmRA -45.1 PmDE -42.8 E RAmdeg 7 E DEmdeg 9
E pmRA 1.9 E pmDE 1.6 EpRAm 1991.23 EpDEm 1990.49
Num 6 Q RAmdeg 1.0 Q DEmdeg 0.9 Q pmRA 1.1
Q pmDE 0.9 BTmag 8.596 E BTmag 0.020 VTmag 7.893
E VTmag 0.014 Prox 999 TYC T HIP 91253
CCDM AB RAdeg 279.20097500 DEdeg -26.28934111 EpRA 1990 1.66
EpDE 1990 1.51 E RAdeg 7.1 E DEdeg 8.6 Posflg P
Corr 0.3
SAO
SAO 187041 DelFlag RA1950 PmRA1950 -0.0033
DE1950 PmDE1950 -0.015 Vmag 8.2 SpType G0
Double code Source 25 CatNum 12920 DM CD-2613320
DMcomp BDsup HD 171595 M HD 0
GC RA1950rad 4.85942834 DE1950rad -0.45956661 PmRA2000 -0.0034
PmDE2000 -0.015
Hipparcos
Catalog H HIP 91253 Proxy H RAhms 18 36 48.23
DEdms -26 17 21.6 Vmag 7.8 VarFlag R Vmag H
RAdeg 279.201 DEdeg -26.2893 AstroRef * Plx 20.55
CCDM 18368-2617 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 229 Rho 0.214 HD 171595 BD
CD CD-2613320 CP CP-26 6518 Dm number -2613320 VIred 0.7
SpType G3V R SpType Coord arcsec 2000 183648.23-261721.6
Hipparcos 2
HIP 91253 Sn 55 So 3 Nc 2
RArad 4.8729762397 DErad -0.458835482 Plx 21.54 PmRA -43.34
PmDE -43.5 E RArad 1.22 E DErad 0.94 E Plx 1.7
E pmRA 1.99 E pmDE 1.28 Hpmag 7.9297 E Hpmag 0.0016
SHp 0.013 VA 0 BV 0.634 E BV 0.017
VI 0.7
CCDM
Ccdm 18368-2617 RComp Comp A Note1
Note2 Discov num DRAs 0.22 DDEs -20.5
R dRAs 41 Year Theta Rho
Obs 2 Vmag 8.4 Sp G0 PmNote *
PmRA -44 PmDE -15 Dm number -2613320 Cat1 CD
Name2 187041 Cat2 SAO HD 171595 M HD
ADS BDS M ADS BDS N IDS IDS 18306S2622A
HIC 91253
 
 
18368-2617 B
 
 
Coord arcsec 2000 183648.23-261721.7 Mag 8.96 Calc delta mag 0.49 Calc coord yes
CCDM
Ccdm 18368-2617 RComp Comp B Note1
Note2 Discov num RST3187 DRAs DDEs
R dRAs Year 1934 Theta 231 Rho 0.2
Obs 3 Vmag 8.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N N IDS IDS 18306S2622B
HIC 91253
 
 
18368-2617 C
 
 
Coord arcsec 2000 183648.79-261712.0 Mag 13.8 Spectral class M (red) Calc delta mag 5.33
Calc coord yes