18360+1144 STT 357 (HD 171728)

 
 
18h 35m 57.08s +11° 43' 42.1" P.A. 68.00 sep 0.4 mag 8.08,8.87 Sp A7V dist. 223.21 pc (728.11 l.y.)
 
 
Coord 2000 18360+1144 Discov num STT 357 Comp Coord arcsec 2000 18 35 57.08 +11 43 42.1
Date first 1843 Date last 2019 Obs 146
Pa first 272 Pa last 68.4 P.A. Now (θ) 64.9°
Sep first 0.5 Sep last 0.35 Sep. Now (ρ) 0.362"
Mag pri 8.08 Mag sec 8.87 delta mag (ΔM) 0.79 Spectral class A7V (white)
Pri motion ra +012 Sec motion ra +012
Pri motion dec -011 Sec motion dec -011
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 171728 Constellation Ophiuchus SAO 103885 HIP 91167
Tycho2 1032-01257-1 HD 171728 ADS 11484 BD BD+11 3518
Distance 223.21 Distance ly 728.11
 
 
ORBITAL ELEMENTS
 
 
Period (P)411.1y Periastron (T)1968.324y Semi-major axis (a)0.511a
Eccentricity (e)0.317 Inclination (i)124.8° Longitude of periastron (ω)321.9°
Node (Ω)93.8° Notesn ReferenceSca2011a
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 85.4 0.377
2001 84.5 0.378
2002 83.6 0.378
2003 82.8 0.378
2004 81.9 0.378
2005 81.0 0.378
2006 80.2 0.378
2007 79.3 0.377
2008 78.4 0.377
2009 77.6 0.376
2010 76.7 0.376
2011 75.8 0.375
2012 74.9 0.374
2013 74.0 0.373
2014 73.1 0.373
2015 72.2 0.372
2016 71.3 0.370
2017 70.4 0.369
2018 69.5 0.368
2019 68.6 0.367
2020 67.7 0.366
2021 66.8 0.364
2022 65.8 0.363
2023 64.9 0.362
2024 63.9 0.360
2025 63.0 0.359
2026 62.0 0.357
2027 61.0 0.356
2028 60.1 0.354
2029 59.1 0.353
2030 58.1 0.351


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



 
 


wds18360%2B1144b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 18360+1144 STT 357 (HD 171728) : NOTES
 
 
discov_num notes refcode
STT 357 Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 8.78 +/- 7.73, 4.26, and 1.66 Msun, respectively. Mlk2012
 
 
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
Sca2011a S j Scardia, M., Prieur, J.-L., Pansecchi, L., Argyle, R.W., & Sala, M. 2011AN....332..508S
Sca2011a +orb AN 332, 508, 2011
 
 
DISCOVERER
 
 
idgroup discov author
1 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18360+1144 STT 357 2007 132 78 0.4 8.08 8.87 A7V NOD 183557.08+114342.1
18360+1144 STT 357 2010 139 74 0.4 8.08 8.87 A7V NOD 183557.08+114342.1
18360+1144 STT 357 2011 144 76 0.4 8.08 8.87 A7V NO 183557.08+114342.1
18360+1144 STT 357 2017 144 86 0.5 8.08 8.87 A7V NO 183557.08+114342.1
18360+1144 STT 357 2019 145 68 0.4 8.08 8.87 A7V NO 183557.08+114342.1

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WDS 18360+1144 STT 357 (HD 171728) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18360+1144 STT 357 (HD 171728) : MEASURES
 
 
No records found.

 
 
WDS 18360+1144 (HD 171728) : VIRTUAL EYEPIECE
 
 

18360+1144 STT 357A mag 8.08 Sp A7V 18360+1144 STT 357B sep 0.3 P.A. 68.00 mag 8.87 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 18360+1144 (HD 171728) : ALADIN DSS IMAGE @ 18h 35m 57.08s +11° 43' 42.1"
 
 
 
 
WDS 18360+1144 STT 357 (HD 171728) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18360+1144  STT 357 distance=1' 18368+1151  L    39 distance=15' 18369+1129  BPM 792 distance=21' 18346+1134  BPM 790 distance=22' 18350+1127  STF2341 distance=23' 18378+1127  BLL  33 distance=33' 18342+1123  HJ 1329 distance=34' 18344+1116  KRU   7 distance=37' 18340+1219  J  1170 distance=47' 18337+1216  ADP   4 distance=47' 18328+1147  HU  245 distance=47' 18380+1107  BPM 795 distance=48' 18339+1220  J  1197 distance=49' 18385+1107  BPM 798 distance=53' 18396+1146  SLE 229BC distance=54' 18396+1146  AG  363AB distance=54' 18396+1146  SLE 229AD distance=54' 18396+1146  SLE 229AC distance=54' 18381+1229  BPM 797 distance=56' 18329+1111  DAM 639 distance=57' 18321+1152  BRT1301 distance=59' 18400+1146  TDT 984 distance=60' 18403+1141  BRT1306 distance=64' 18395+1225  BPM 800 distance=67' 18316+1204  BPM 787 distance=67' 18316+1203  HU  244 distance=67' 18328+1054  HEI 561 distance=69' 18381+1245  BPM 796 distance=70' 18340+1250  J  1832 distance=72' 18310+1125  J  2131 distance=76' 18408+1214  HJ 1334 distance=78' 18412+1128  BPM 802 distance=79' 18413+1146  GRV 236 distance=80' 18414+1133  BPM 803 distance=81' 18390+1035  J  2140 distance=82' 18367+1019  L  9002 distance=86' 18384+1027  BRT1305 distance=86' 18390+1027  J  1266 distance=86' 18364+1017  PRZ  14AB distance=87' 18364+1017  PRZ  14AC distance=87' 18301+1127  BPM 784 distance=88' 18370+1016  HU  247 distance=89' 18298+1201  BPM 781 distance=93' 18379+1015  DAM 286 distance=94' 18333+1309  OSO 100 distance=95' 18296+1126  BRT1300 distance=96' 18365+1009  BRT1304 distance=96' 18299+1222  BPM 782 distance=97' 18326+1019  BRT1303 distance=98' 18355+1005  BRT1945AB distance=99' 18355+1005  BRT1945AC distance=99' grafico limitrofi
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Show name coord_2000 discov# comp pa sep dist(')
Show 18360+1144 STT 357 68 0.4 1
Show 18368+1151 L 39 218 2.2 15
Show 18369+1129 BPM 792 358 86.9 21
Show 18346+1134 BPM 790 218 40.1 22
Show 18350+1127 STF2341 265 15.4 23
Show 18378+1127 BLL 33 265 131.1 33
Show 18342+1123 HJ 1329 313 15.8 34
Show 18344+1116 KRU 7 50 2.7 37
Show 18340+1219 J 1170 120 4.5 47
Show 18337+1216 ADP 4 301 3.9 47
Show 18328+1147 HU 245 53 2.1 47
Show 18380+1107 BPM 795 38 108.9 48
Show 18339+1220 J 1197 180 2.3 49
Show 18385+1107 BPM 798 43.0 53
Show 18396+1146 SLE 229 BC 195 22.4 54
Show 18396+1146 AG 363 AB 197 15.6 54
Show 18396+1146 SLE 229 AD 146 59.8 54
Show 18396+1146 SLE 229 AC 196 37.9 54
Show 18381+1229 BPM 797 13 97.1 56
Show 18329+1111 DAM 639 256 7.0 57
Show 18321+1152 BRT1301 42 3.5 59
Show 18400+1146 TDT 984 137 1.4 60
Show 18403+1141 BRT1306 348 3.6 64
Show 18395+1225 BPM 800 50 92.4 67
Show 18316+1204 BPM 787 159 26.9 67
Show 18316+1203 HU 244 254 1.3 67
Show 18328+1054 HEI 561 190 2.4 69
Show 18381+1245 BPM 796 221 65.0 70
Show 18340+1250 J 1832 353 6.7 72
Show 18310+1125 J 2131 9 8.1 76
Show 18408+1214 HJ 1334 91 11.1 78
Show 18412+1128 BPM 802 36 61.1 79
Show 18413+1146 GRV 236 353 57.4 80
Show 18414+1133 BPM 803 341 84.4 81
Show 18390+1035 J 2140 184 6.4 82
Show 18367+1019 L 9002 275 4.9 86
Show 18384+1027 BRT1305 135 4.9 86
Show 18390+1027 J 1266 29 2.0 86
Show 18364+1017 PRZ 14 AB 300 11.0 87
Show 18364+1017 PRZ 14 AC 101 43.9 87
Show 18301+1127 BPM 784 290 32.8 88
Show 18370+1016 HU 247 359 0.4 89
Show 18298+1201 BPM 781 276 50.9 93
Show 18379+1015 DAM 286 312 3.4 94
Show 18333+1309 OSO 100 132 23.0 95
Show 18296+1126 BRT1300 262 4.3 96
Show 18365+1009 BRT1304 235 5.5 96
Show 18299+1222 BPM 782 242 52.0 97
Show 18326+1019 BRT1303 295 7.4 98
Show 18355+1005 BRT1945 AB 358 5.8 99
Show 18355+1005 BRT1945 AC 108 8.3 99

 
 
WDS 18360+1144 : COMPONENTS
 
 
  A
B pa=68.0°
sep=0.34"
 
 
18360+1144 A
 
 
Componente originario normalizzato AB Name HD 171728 Coord arcsec 2000 183557.08+114342.1 Mag 8.08
Spectral class A7V (white) PmRA 12.00 PmDE -11.0 SAO 103885
HIP 91167 Tycho2 1032-01257-1 HD 171728 BD BD+11 3518
Tycho2
Tycho2 1032-01257-1 Pflag RAmdeg 278.98786988 DEmdeg 11.72836865
PmRA 11.5 PmDE -10.9 E RAmdeg 4 E DEmdeg 5
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.57 EpDEm 1991.45
Num 11 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.0
Q pmDE 1.2 BTmag 7.963 E BTmag 0.016 VTmag 7.689
E VTmag 0.011 Prox 999 TYC T HIP 91167
CCDM AB RAdeg 278.98784333 DEdeg 11.72839361 EpRA 1990 1.80
EpDE 1990 1.77 E RAdeg 4.2 E DEdeg 5.1 Posflg P
Corr 0.0
SAO
SAO 103885 DelFlag RA1950 PmRA1950 0
DE1950 PmDE1950 -0.011 Vmag 7.7 SpType A2
Double code Source 29 CatNum 6696 DM BD+11 3518
DMcomp BDsup HD 171728 M HD 0
GC RA1950rad 4.85906459 DE1950rad 0.20396534 PmRA2000 0.0001
PmDE2000 -0.012
Hipparcos
Catalog H HIP 91167 Proxy H RAhms 18 35 57.07
DEdms +11 43 42.2 Vmag 7.64 VarFlag R Vmag H
RAdeg 278.988 DEdeg 11.7284 AstroRef A Plx 5.59
CCDM 18360+1144 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 93 Rho 0.357 HD 171728 BD BD+11 3518
CD CP Dm number +11 3518 VIred 0.25
SpType A2 R SpType Coord arcsec 2000 183557.07+114342.2
Hipparcos 2
HIP 91167 Sn 15 So 3 Nc 2
RArad 4.8692554544 DErad 0.2046991703 Plx 4.48 PmRA 10.67
PmDE -9.76 E RArad 0.86 E DErad 0.56 E Plx 1.04
E pmRA 1.11 E pmDE 0.79 Hpmag 7.7168 E Hpmag 0.0013
SHp 0.01 VA 0 BV 0.262 E BV 0.011
VI 0.29
CCDM
Ccdm 18360+1144 RComp Comp A Note1
Note2 Discov num DRAs -2.98 DDEs -18.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.1 Sp A2 PmNote *
PmRA 2 PmDE -14 Dm number +11 3518 Cat1 BD
Name2 +11 2081 Cat2 AGK2/3 HD 171728 M HD
ADS BDS A11484 M ADS BDS N IDS IDS 18313N1139A
HIC 91167
 
 
18360+1144 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 183557.10+114342.2 Mag 8.87 PmRA 12.00
PmDE -11.0 Calc delta mag 0.79 Calc coord yes
CCDM
Ccdm 18360+1144 RComp Comp B Note1 *
Note2 Discov num STT 357 DRAs DDEs
R dRAs Year 1845 Theta Rho
Obs 99 Vmag 8.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11484 M ADS BDS N IDS IDS 18313N1139B
HIC 91167