17157-0949 TOK 53 Ba,Bb

 
 
17h 15m 41.08s -09° 48' 31.9" P.A. 279.00 sep 0.0 mag 10.40,10.60 Sp F9IV dist. 204.08 pc (665.71 l.y.)
 
 
Coord 2000 17157-0949 Discov num TOK  53 Comp Ba,Bb Coord arcsec 2000 17 15 41.08 -09 48 31.9
Date first 2009 Date last 2021 Obs 21
Pa first 131 Pa last 278.5 P.A. Now (θ) 209.1°
Sep first 0.0 Sep last 0.03 Sep. Now (ρ) 0.038"
Mag pri 10.40 Mag sec 10.60 delta mag (ΔM) 0.2 Spectral class F9IV (yellow-white)
Pri motion ra -012 Sec motion ra
Pri motion dec -021 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
17157-0949 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 156034 141578 17 15 41 -09 48 32 A 2592 AB 2021 88 70 0.2 7.15 9.69 2.54 Y
Show 17 15 41 -09 48 32 TOK 53 Ba,Bb 2021 21 279 0.0 10.40 10.60 0.20 Y <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Ophiuchus HIP 84430 Tycho2 5649-00907-1 Gaia DR2 4143293519539985536
HD 156034 ADS 10423 BD BD-09 4525 Distance 204.08
Distance ly 665.71
 
 
ORBITAL ELEMENTS
 
 
Period (P)5.257y± 0.052 Periastron (T)2011.08y± 0.59 Semi-major axis (a)0.033a± 0.008
Eccentricity (e)0.46± 0.11 Inclination (i)138.6°± 24.9 Longitude of periastron (ω)69°± 22.5
Node (Ω)52.3°± 11.7 Notesn ReferenceTok2021b
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 67.8 0.025
2001 261.1 0.021
2002 208.1 0.038
2003 176.0 0.039
2004 138.2 0.034
2005 85.9 0.028
2006 303.4 0.015
2007 217.3 0.036
2008 184.3 0.039
2009 149.0 0.035
2010 101.3 0.030
2011 8.0 0.015
2012 227.9 0.033
2013 192.5 0.040
2014 158.9 0.036
2015 115.1 0.031
2016 46.9 0.021
2017 241.9 0.028
2018 200.6 0.039
2019 168.2 0.038
2020 127.8 0.032
2021 70.0 0.026
2022 264.2 0.021
2023 209.1 0.038
2024 176.9 0.039
2025 139.4 0.034
2026 87.7 0.028
2027 310.2 0.014
2028 218.3 0.036
2029 185.2 0.039
2030 150.1 0.035


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



 
 


wds17157-0949e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 17157-0949 TOK 53 Ba,Bb : NOTES
 
 
discov_num notes refcode
A 2592 AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 20.39 +/- 12.95, 4.49, 1.13 Msun, respectively. Mlk2012
AB + TOK 53Ba,Bb: This is the triple system HIP 84430. We computed
the first orbit of the secondary subsystem Ba,Bb which was discovered
at SOAR in 2009 and has just completed one full revolution since. Its
separation is always close to the diffraction limit. Adopting a mass
sum of 2.6 Msun for Ba,Bb, the resulting dynamical parallax is
7.6+/-1.5mas, while the HIP2 parallax is 4.9+/-0.9mas. The latest
orbit of the outer pair A 2592 AB published in Tokovinin et al. (2014) [Tok2014
does not account for the fact that the speckle measurements at SOAR
refer to A,Ba and not to AB. Here we give a more accurate solution
that uses the positions of AB computed from the measures of A,Ba under
the assumption that Ba and Bb have equal masses. After this correction
and orbit adjustment, the weighted residuals are 4.3mas in separation
and 1.3deg in angle. Interestingly, there were a considerable number
of speckle-interferometry measures of this pair obtained in the 1980's
and 1990's at 4-m telescopes, but none of them recognized the
subsystem Ba,Bb, despite its small dm.
Ignoring the multiplicity, the spectroscopic survey of Guillout et al.
(2009 A&A 504, 829) determined a moderate axial rotation V sin i =
10.8km/s and detected the lithium line of 52.8mA equivalent width
which, together with the X-ray detection by ROSAT (RasTyc 1715-0948),
normally indicates youth. These authors do not mention this star in
particular, but discuss a group of active lithium-rich giants in their
sample, to which this system apparently belongs. Even with the larger
dynamical parallax (instead of the HIP2 parallax), all three resolved
components of HIP 84430 are located above the main sequence in the
color-magnitude diagram. This multiple system is peculiar and merits
further study. Tok2015c
 
 
REFERENCES
 
 
refcode metd author reference
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2015c orb+j Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. 2015AJ....150...50T
Tok2015c +St AJ 150, 50, 2015 (some measures corrected in Tok2017b) 2017AJ....154..110T
Tok2021b orb Tokovinin, A. 2021AJ....161..144T
Tok2021b AJ 161, 144, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17157-0949 TOK 53 Ba,Bb 2009 2 141 0.0 10.40 10.60 N 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2012 3 216 0.0 10.40 10.60 N 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2013 6 175 0.0 10.40 10.60 F9IV N 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2014 8 147 0.0 10.40 10.60 F9IV NO 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2017 9 229 0.0 10.40 10.60 F9IV NO 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2018 14 173 0.0 10.40 10.60 F9IV NO 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2019 17 152 0.0 10.40 10.60 F9IV NO 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2020 18 0 0.0 10.40 10.60 F9IV NO 171541.08-094831.9
17157-0949 TOK 53 Ba,Bb 2021 21 279 0.0 10.40 10.60 F9IV NO 171541.08-094831.9

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

 
 
WDS 17157-0949 TOK 53 Ba,Bb : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17157-0949 TOK 53 Ba,Bb : MEASURES
 
 
No records found.

 
 
WDS 17157-0949 : VIRTUAL EYEPIECE
 
 

17157-0949 A  2592A mag 7.15 Sp F7V 17157-0949 TOK  53B mag 10.4 Sp F9IV 17157-0949 TOK  53Bb mag 10.6 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 17157-0949 : ALADIN DSS IMAGE @ 17h 15m 41.08s -09° 48' 31.9"
 
 
 
 
WDS 17157-0949 TOK 53 Ba,Bb : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


17157-0949  TOK  53Ba,Bb distance=0' 17156-1018  BU  957 distance=30' 17136-0917  BU 1247AB distance=44' 17115-0956  HDS2428 distance=62' 17162-1054  LSC  72 distance=66' 17156-0825  BRT 467 distance=83' 17137-0831  WRH   8 distance=85' 17141-0824  BAR   7 distance=88' 17137-0825  TSN 181 distance=89' 17208-0902  A    28 distance=89' 17209-1042  RST3971 distance=94' 17192-1107  REI   1AB distance=95' 17192-1107  KPP4389AC distance=95' 17098-1031  TOK 414 distance=97' 17102-1044  GWP2695 distance=99' 17199-1121  STF2148 distance=112' 17080-0957  RST3966 distance=114' 17123-1131  YMG  86 distance=114' 17217-1103  HU  173 distance=117' 17174-0752  STF2144 distance=120' 17085-1049  UC 3295 distance=122' 17178-1149  LDS 593AB distance=125' 17178-1149  CRC  23AC distance=125' 17200-0801  CHR 151Aa,Ab distance=125' 17200-0801  ENG  60AB distance=125' 17240-0921  RST3972Aa,Ab distance=126' 17240-0921  TOK 179AB distance=126' 17204-1138  ARY 110 distance=130' 17250-0931  FOX 201AB distance=139' 17250-0931  FOX 201AC distance=139' 17250-0913  GWP2710AB distance=143' 17254-0850  HDS2460 distance=156' 17153-0712  TOK 608 distance=157' 17142-1226  TDT 282 distance=160' 17057-0839  BRT 466 distance=163' 17240-1142  BU  242AB distance=168' 17240-1142  BU  242AC distance=168' 17240-1142  BU  242AD distance=168' 17084-1202  UC 3294 distance=172' 17038-0938  UC 3281 distance=176' 17067-0749  RST3965 distance=179' 17207-0706  A  2593AB distance=179' 17207-0706  TOK 178AC distance=179' 17226-0704  KPP4036 distance=194' 17231-0706  TOK 312 distance=196' 17260-0745  RST3975AB distance=197' 17260-0745  GII 246Aa,Ab distance=197' 17208-1251  SHJ 247 distance=198' 17283-0839  A    29 distance=199' 17086-0658  KPP4026 distance=201' 17293-0959  STF2171 distance=202' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 17157-0949 TOK 53 Ba,Bb 279 0.0
Show 17157-0949 A 2592 AB 70 0.2
Show 17156-1018 BU 957 56 0.1 30
Show 17136-0917 BU 1247 AB 342 1.5 44
Show 17115-0956 HDS2428 15 0.3 62
Show 17162-1054 LSC 72 153 1.1 66
Show 17156-0825 BRT 467 194 4.4 83
Show 17137-0831 WRH 8 340 10.9 85
Show 17141-0824 BAR 7 44 1.5 88
Show 17137-0825 TSN 181 148 0.0 89
Show 17208-0902 A 28 36 2.0 89
Show 17209-1042 RST3971 80 8.6 94
Show 17192-1107 REI 1 AB 352 8.7 95
Show 17192-1107 KPP4389 AC 142 48.8 95
Show 17098-1031 TOK 414 71 0.0 97
Show 17102-1044 GWP2695 357 8.3 99
Show 17199-1121 STF2148 220 5.6 112
Show 17080-0957 RST3966 111 0.5 114
Show 17123-1131 YMG 86 78 0.1 114
Show 17217-1103 HU 173 345 0.6 117
Show 17174-0752 STF2144 178 25.9 120
Show 17085-1049 UC 3295 43 31.0 122
Show 17178-1149 LDS 593 AB 338 30.1 125
Show 17178-1149 CRC 23 AC 145 4.7 125
Show 17200-0801 CHR 151 Aa,Ab 219 0.3 125
Show 17200-0801 ENG 60 AB 232 89.8 125
Show 17240-0921 RST3972 Aa,Ab 114 0.1 126
Show 17240-0921 TOK 179 AB 298 18.9 126
Show 17204-1138 ARY 110 237 77.1 130
Show 17250-0931 FOX 201 AB 124 6.0 139
Show 17250-0931 FOX 201 AC 324 7.2 139
Show 17250-0913 GWP2710 AB 194 58.5 143
Show 17254-0850 HDS2460 341 0.7 156
Show 17153-0712 TOK 608 5 368.1 157
Show 17142-1226 TDT 282 268 0.6 160
Show 17057-0839 BRT 466 240 3.4 163
Show 17240-1142 BU 242 AB 79 1.2 168
Show 17240-1142 BU 242 AC 64 9.1 168
Show 17240-1142 BU 242 AD 61 48.3 168
Show 17084-1202 UC 3294 204 43.7 172
Show 17038-0938 UC 3281 345 4.1 176
Show 17067-0749 RST3965 299 1.8 179
Show 17207-0706 A 2593 AB 329 0.3 179
Show 17207-0706 TOK 178 AC 109 10.2 179
Show 17226-0704 KPP4036 85 1.7 194
Show 17231-0706 TOK 312 167 119.8 196
Show 17260-0745 RST3975 AB 28 1.0 197
Show 17260-0745 GII 246 Aa,Ab 166 0.2 197
Show 17208-1251 SHJ 247 25 45.6 198
Show 17283-0839 A 29 97 3.2 199
Show 17086-0658 KPP4026 194 1.4 201

 
 
WDS 17157-0949 : COMPONENTS
 
 
  A B
B pa=0.0°
sep=0.00"
 
Bb pa=278.6°
sep=0.03"
pa=278.6°
sep=0.03"
 
 
17157-0949 A
 
 
Name HD 156034 Coord arcsec 2000 171541.08-094831.9 Mag 7.15 Spectral class F7V (yellow-white)
PmRA 12.00 PmDE -21.0 SAO 141578 HIP 84430
Tycho2 5649-00907-1 HD 156034 GC 23293 BD BD-09 4525
Tycho2
Tycho2 5649-00907-1 Pflag RAmdeg 258.92117665 DEmdeg -9.80886095
PmRA 12.1 PmDE -21.2 E RAmdeg 5 E DEmdeg 5
E pmRA 0.8 E pmDE 0.9 EpRAm 1990.98 EpDEm 1990.84
Num 17 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.1
Q pmDE 1.1 BTmag 7.999 E BTmag 0.017 VTmag 7.071
E VTmag 0.011 Prox 999 TYC T HIP 84430
CCDM AB RAdeg 258.92114861 DEdeg -9.80881056 EpRA 1990 1.71
EpDE 1990 1.46 E RAdeg 4.9 E DEdeg 5.4 Posflg P
Corr 0.1
SAO
SAO 141578 DelFlag RA1950 PmRA1950 0.0008
DE1950 PmDE1950 -0.019 Vmag 7.1 SpType F5
Double code Source 70 CatNum 23293 DM BD-09 4525
DMcomp BDsup HD 156034 M HD 0
GC 23293 RA1950rad 4.50702034 DE1950rad -0.17022927 PmRA2000 0.001
PmDE2000 -0.016
Hipparcos
Catalog H HIP 84430 Proxy H RAhms 17 15 41.08
DEdms -09 48 31.6 Vmag 6.93 VarFlag R Vmag H
RAdeg 258.921 DEdeg -9.80877 AstroRef A Plx 5.71
CCDM 17157-0949 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 211 Rho 0.336 HD 156034 BD BD-09 4525
CD CP Dm number -09 4525 VIred 0.85
SpType F5 R SpType Coord arcsec 2000 171541.08-094831.6
Hipparcos 2
HIP 84430 Sn 15 So 3 Nc 2
RArad 4.519026841 DErad -0.1711952926 Plx 4.9 PmRA 3.9
PmDE -15.15 E RArad 0.85 E DErad 0.55 E Plx 0.94
E pmRA 1.11 E pmDE 0.7 Hpmag 7.0828 E Hpmag 0.0012
SHp 0.008 VA 0 BV 0.796 E BV 0.01
VI 0.83
CCDM
Ccdm 17157-0949 RComp Comp A Note1
Note2 Discov num DRAs -0.92 DDEs 28.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.6 Sp F5 PmNote *
PmRA 8 PmDE -21 Dm number -09 4525 Cat1 BD
Name2 141578 Cat2 SAO HD 156034 M HD
ADS BDS A10423 M ADS BDS N IDS IDS 17102S0942A
HIC 84430
 
 
17157-0949 B
 
 
Coord arcsec 2000 171541.08-094831.9 Coord calc 171541.09-094831.8 Mag 10.4 Mag composta 9.69
Spectral class F9IV (yellow-white) PmRA -12.00 PmDE -21.0 Calc delta mag 3.25
 
 
17157-0949 Bb
 
 
Coord arcsec 2000 171541.08-094831.9 Mag 10.6 Calc delta mag 3.45 Calc coord yes