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Current system
15339-1700
HDS 2185
HD 138648


Nearby doubles
18' : 15350-1708
HDS2188

34' : 15362-1656
ARN 106

40' : 15364-1719
LDS4568

45' : 15370-1659
HWE 35AB

48' : 15343-1613
RST3923

51' : 15365-1741
ARA 241

59' : 15328-1756
HJ 1273

67' : 15382-1633
FOX 75

67' : 15360-1806
ARA 240

68' : 15296-1726
UC 3014

71' : 15383-1734
HDS2206AB

79' : 15328-1817
GWP2530

81' : 15348-1820
ARA 239

81' : 15380-1605
LDS4574

84' : 15283-1643
OCC 953

90' : 15390-1608
KPP1169

90' : 15282-1625
WSP 109AB

92' : 15385-1556
UC 3035

93' : 15372-1820
BRT1493

94' : 15338-1527
LDS4559

105' : 15404-1749
TDS9587

106' : 15266-1706
HU 309

113' : 15274-1556
FOX 74

119' : 15312-1852
HO 393AB

128' : 15287-1843
HU 650

131' : 15275-1833
ARA 429



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

15339-1700 HDS 2185 (HD 138648)

 
 
15h 33m 56.80s -17° 00' 08.2" P.A. 199.00 sep 0.5 mag 8.55,9.78 Sp K0V dist. 38.68 pc (126.17 l.y.)
 
 
Coord 2000 15339-1700 Discov num HDS2185 Comp Coord arcsec 2000 15 33 56.80 -17 00 08.2
Date first 1991 Date last 2021 Obs 16
Pa first 326 Pa last 198.7 P.A. Now (θ) 198.7°
Sep first 0.7 Sep last 0.47 Sep. Now (ρ) 0.47"
Mag pri 8.55 Mag sec 9.78 delta mag (ΔM) 1.23 Spectral class K0V (yellow-orange)
Pri motion ra -088 Sec motion ra -088
Pri motion dec -324 Sec motion dec -324
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 138648 Constellation Libra SAO 159349 HIP 76203
Tycho2 6188-00764-1 Gaia DR2 6255498752842627584 HD 138648 GC 20912
BD BD-16 4112 Distance 38.68 Distance ly 126.17
 
 
ORBITAL ELEMENTS
 
 
Period (P)72.32y± 2.2 Periastron (T)2010.26y± 0.1 Semi-major axis (a)0.5757a± 0.0069
Eccentricity (e)0.414± 0.012 Inclination (i)34.6°± 1 Longitude of periastron (ω)310.3°± 1.1
Node (Ω)150.6°± 1.1 Notesn ReferenceTok2017b
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 357.3 0.487
2001 2.9 0.457
2002 9.2 0.426
2003 16.6 0.396
2004 25.1 0.366
2005 35.1 0.339
2006 46.7 0.316
2007 59.9 0.299
2008 74.2 0.291
2009 88.8 0.292
2010 102.9 0.301
2011 116.0 0.315
2012 127.8 0.333
2013 138.3 0.352
2014 147.8 0.371
2015 156.4 0.388
2016 164.3 0.403
2017 171.6 0.417
2018 178.5 0.430
2019 185.0 0.443
2020 191.1 0.454
2021 197.0 0.465
2022 202.5 0.476
2023 207.8 0.488
2024 212.9 0.499
2025 217.8 0.510
2026 222.4 0.522
2027 226.9 0.533
2028 231.1 0.545
2029 235.2 0.557
2030 239.1 0.569


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


 
  


wds15339-1700e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 15339-1700 HDS 2185 (HD 138648) : NOTES
 
 
discov_num notes refcode
HDS2185 Hipparcos parallax 25.85 +/- 0.94 mas. Dynamical parallax 29.9 mas,
masses 0.90 and 0.72 Msun. HDS 2185 has its first 60 yr orbit
determined here, with nearly half of it covered. The orbit is still
preliminary. The speckle measure on 2001.56 was given a lower weight. Tok2012b
 
 
REFERENCES
 
 
refcode metd author reference
Tok2012b S j Tokovinin, A. 2012AJ....144...56T
Tok2012b +orb AJ 144, 56, 2012
Tok2017b orb j Tokovinin, A. 2017AJ....154..110T
Tok2017b AJ 154, 110, 2017
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15339-1700 HDS2185 2004 4 26 0.4 8.55 9.78 K0V D 153356.80-170008.2
15339-1700 HDS2185 2009 5 272 0.3 8.55 9.78 K0V D 153356.80-170008.2
15339-1700 HDS2185 2012 8 310 0.3 8.55 9.78 K0V OD 153356.80-170008.2
15339-1700 HDS2185 2013 9 140 0.4 8.55 9.78 K0V OD 153356.80-170008.2
15339-1700 HDS2185 2015 10 161 0.4 8.55 9.78 K0V NO 153356.80-170008.2
15339-1700 HDS2185 2017 14 175 0.4 8.55 9.78 K0V NO 153356.80-170008.2
15339-1700 HDS2185 2019 15 187 0.4 8.55 9.78 K0V NO 153356.80-170008.2
15339-1700 HDS2185 2021 16 199 0.5 8.55 9.78 K0V NO 153356.80-170008.2

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

 
 
WDS 15339-1700 HDS 2185 (HD 138648) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 15339-1700 HDS 2185 (HD 138648) : MEASURES
 
 
No records found.

 
 
WDS 15339-1700 (HD 138648) : VIRTUAL EYEPIECE
 
 

15339-1700 HDS2185A mag 8.55 Sp K0V 15339-1700 HDS2185B sep 0.5 P.A. 197.90 mag 9.78 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 15339-1700 (HD 138648) : ALADIN DSS IMAGE @ 15h 33m 56.80s -17° 00' 08.2"
 
 
 
 
WDS 15339-1700 HDS 2185 (HD 138648) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

15339-1700 HDS2185 distance=0' 15350-1708 HDS2188 distance=18' 15362-1656 ARN 106 distance=34' 15364-1719 LDS4568 distance=40' 15370-1659 HWE 35AB distance=45' 15370-1659 HWE 35AC distance=45' 15343-1613 RST3923 distance=48' 15365-1741 ARA 241 distance=51' 15328-1756 HJ 1273 distance=59' 15382-1633 FOX 75 distance=67' 15360-1806 ARA 240 distance=67' 15296-1726 UC 3014 distance=68' 15383-1734 HDS2206AB distance=71' 15383-1734 TOK 168AC distance=71' 15328-1817 GWP2530 distance=79' 15348-1820 ARA 239 distance=81' 15380-1605 LDS4574 distance=81' 15283-1643 OCC 953 distance=84' 15390-1608 KPP1169 distance=90' 15282-1625 WSP 109AB distance=90' 15282-1625 WSP 109AC distance=90' 15282-1625 WSP 109AD distance=90' 15282-1625 WSP 109AE distance=90' 15282-1625 WSP 109AF distance=90' 15282-1625 WSP 109AG distance=90' 15282-1625 WSP 109AH distance=90' 15282-1625 WSP 109AI distance=90' 15282-1625 WSP 109AJ distance=90' 15385-1556 UC 3035 distance=92' 15372-1820 BRT1493 distance=93' 15338-1527 LDS4559 distance=94' 15404-1749 TDS9587 distance=105' 15266-1706 HU 309 distance=106' 15274-1556 FOX 74 distance=113' 15312-1852 HO 393AB distance=119' 15312-1852 HO 393AC distance=119' 15287-1843 HU 650 distance=128' 15275-1833 ARA 429 distance=131' 15355-1447 WRH 20Aa,Ab distance=135' 15355-1447 GOL 1AB (Zubenelhakrabi) distance=135' 15245-1700 BHA 57 distance=136' 15345-1443 UC 3027 distance=138' 15429-1610 UC 3049BC distance=138' 15405-1842 HDS2211AB distance=138' 15405-1842 CVN 53AC distance=138' 15405-1842 CVN 53AD distance=138' 15429-1610 UC 3049AB distance=139' 15429-1610 GWP2548AD distance=139' 15366-1447 RST3924 distance=139' 15243-1719 RST3917 distance=140' 15428-1601 BU 35AB distance=141' 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 15339-1700 HDS2185 199 0.5
Show 15350-1708 HDS2188 323 0.1 18
Show 15362-1656 ARN 106 293 44.6 34
Show 15364-1719 LDS4568 132 5.1 40
Show 15370-1659 HWE 35 AB 331 7.3 45
Show 15370-1659 HWE 35 AC 236 43.5 45
Show 15343-1613 RST3923 306 1.2 48
Show 15365-1741 ARA 241 52 3.8 51
Show 15328-1756 HJ 1273 328 14.5 59
Show 15382-1633 FOX 75 19 1.6 67
Show 15360-1806 ARA 240 230 7.7 67
Show 15296-1726 UC 3014 26 46.0 68
Show 15383-1734 HDS2206 AB 3.8 71
Show 15383-1734 TOK 168 AC 316 13.9 71
Show 15328-1817 GWP2530 285 17.1 79
Show 15348-1820 ARA 239 132 6.3 81
Show 15380-1605 LDS4574 279 2.3 81
Show 15283-1643 OCC 953 -1 0.1 84
Show 15390-1608 KPP1169 2 9.1 90
Show 15282-1625 WSP 109 AB 144 5.7 90
Show 15282-1625 WSP 109 AC 343 13.3 90
Show 15282-1625 WSP 109 AD 258 16.3 90
Show 15282-1625 WSP 109 AE 356 18.7 90
Show 15282-1625 WSP 109 AF 296 19.0 90
Show 15282-1625 WSP 109 AG 306 20.5 90
Show 15282-1625 WSP 109 AH 348 20.9 90
Show 15282-1625 WSP 109 AI 244 21.7 90
Show 15282-1625 WSP 109 AJ 338 23.5 90
Show 15385-1556 UC 3035 252 22.2 92
Show 15372-1820 BRT1493 288 4.7 93
Show 15338-1527 LDS4559 259 448.0 94
Show 15404-1749 TDS9587 279 0.4 105
Show 15266-1706 HU 309 45 1.6 106
Show 15274-1556 FOX 74 145 2.0 113
Show 15312-1852 HO 393 AB 290 6.7 119
Show 15312-1852 HO 393 AC 313 167.9 119
Show 15287-1843 HU 650 338 1.0 128
Show 15275-1833 ARA 429 347 9.8 131
Show 15355-1447 WRH 20 Aa,Ab 191 0.1 135
Show Zubenelhakrabi 15355-1447 GOL 1 AB 158 41.9 135
Show 15245-1700 BHA 57 4 32.7 136
Show 15345-1443 UC 3027 168 66.4 138
Show 15429-1610 UC 3049 BC 136 32.4 138
Show 15405-1842 HDS2211 AB 26 0.6 138
Show 15405-1842 CVN 53 AC 103 8.9 138
Show 15405-1842 CVN 53 AD 224 11.6 138
Show 15429-1610 UC 3049 AB 277 28.2 139
Show 15429-1610 GWP2548 AD 196 21.0 139
Show 15366-1447 RST3924 192 1.1 139
Show 15243-1719 RST3917 176 1.3 140
Show 15428-1601 BU 35 AB 111 1.6 141

 
 
WDS 15339-1700 : COMPONENTS
 
 
  A
B pa=197.9°
sep=0.47"
 
 
15339-1700 A
 
 
Componente originario normalizzato AB Name HD 138648 Coord arcsec 2000 153356.80-170008.2 Mag 8.55
Spectral class K0V (yellow-orange) PmRA -88.00 PmDE -324.0 SAO 159349
HIP 76203 Tycho2 6188-00764-1 HD 138648 GC 20912
BD BD-16 4112
Tycho2
Tycho2 6188-00764-1 Pflag RAmdeg 233.48665649 DEmdeg -17.00226380
PmRA -87.8 PmDE -323.9 E RAmdeg 7 E DEmdeg 9
E pmRA 1.2 E pmDE 1.4 EpRAm 1990.79 EpDEm 1990.79
Num 11 Q RAmdeg 1.0 Q DEmdeg 1.0 Q pmRA 1.2
Q pmDE 1.1 BTmag 9.244 E BTmag 0.020 VTmag 8.319
E VTmag 0.013 Prox 999 TYC T HIP 76203
CCDM AB RAdeg 233.48686694 DEdeg -17.00149361 EpRA 1990 1.74
EpDE 1990 1.44 E RAdeg 6.8 E DEdeg 9.2 Posflg P
Corr 0.1
SAO
SAO 159349 DelFlag RA1950 PmRA1950 -0.0068
DE1950 PmDE1950 -0.341 Vmag 8.3 SpType G5
Double code Source 70 CatNum 20912 DM BD-16 4112
DMcomp BDsup HD 138648 M HD 0
GC 20912 RA1950rad 4.06276491 DE1950rad -0.2937557 PmRA2000 -0.0066
PmDE2000 -0.337
Hipparcos
Catalog H HIP 76203 Proxy H RAhms 15 33 56.85
DEdms -17 00 05.4 Vmag 8.14 VarFlag R Vmag G
RAdeg 233.487 DEdeg -17.0015 AstroRef A Plx 26.47
CCDM 15339-1700 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 326 Rho 0.678 HD 138648 BD BD-16 4112
CD CP Dm number -16 4112 VIred 0.86
SpType K0V R SpType Coord arcsec 2000 153356.85-170005.4
Hipparcos 2
HIP 76203 Sn 15 So 3 Nc 2
RArad 4.0751150221 DErad -0.2967319954 Plx 25.85 PmRA -94.66
PmDE -323.32 E RArad 0.92 E DErad 0.49 E Plx 0.94
E pmRA 1.26 E pmDE 1.13 Hpmag 8.2798 E Hpmag 0.0016
SHp 0.014 VA 0 BV 0.838 E BV 0.009
VI 0.88
CCDM
Ccdm 15339-1700 RComp Comp A Note1
Note2 Discov num DRAs 2.80 DDEs -8.2
R dRAs 82 Year Theta Rho
Obs 2 Vmag 8.5 Sp K0 PmNote *
PmRA -94 PmDE -324 Dm number -16 4112 Cat1 BD
Name2 159349 Cat2 SAO HD 138648 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 76203
 
 
15339-1700 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 153356.79-170008.6 Mag 9.78 PmRA -88.00
PmDE -324.0 Calc delta mag 1.23 Calc coord yes
CCDM
Ccdm 15339-1700 RComp Comp B Note1
Note2 Discov num HDS DRAs 2.77 DDEs -7.6
R dRAs 82 Year 1991 Theta 326 Rho 0.7
Obs 1 Vmag 10.2 Sp PmNote *
PmRA -94 PmDE -324 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 76203