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Doubles in session


Current system
12155-3106
RST 1658
HD 106549


Nearby doubles
17' : 12143-3113
TVB 250

40' : 12147-3144
PRO 99

52' : 12190-3042
KPP 268

57' : 12117-3036
HJ 4505AB

60' : 12153-3204
LDS4197AB

61' : 12112-3132
BRT2992

64' : 12173-3204
TDS8302

66' : 12115-3024
TDS8261

67' : 12187-3014
TDS8316

68' : 12102-3104
RST1650

80' : 12150-2946
I 81

81' : 12109-3010
B 1208

82' : 12213-3033
TOK 789

85' : 12169-2942
LDS 400

89' : 12160-2937
DAW 138

89' : 12208-3009
UC 2322

93' : 12185-3228
LDS4200

94' : 12226-3103
LDS 407

108' : 12110-2934
BRT2991

114' : 12238-3138
LDS5750

117' : 12238-3020
SEE 150

118' : 12066-3137
RUZ 2

121' : 12221-2940
TDS8351

124' : 12064-3145
TDS8224

125' : 12205-2920
UC 2320

125' : 12106-3254
RST2783



Selections
Full WDS
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.

12155-3106 RST 1658 (HD 106549)

 
 
12h 15m 26.96s -31° 05' 38.2" P.A. 193.00 sep 0.5 mag 10.17,11.32 Sp K7V dist. 21.4 pc (69.81 l.y.)
 
 
Coord 2000 12155-3106 Discov num RST1658 Comp Coord arcsec 2000 12 15 26.96 -31 05 38.2
Date first 1931 Date last 2021 Obs 26
Pa first 82 Pa last 193 P.A. Now (θ) 193°
Sep first 0.4 Sep last 0.538 Sep. Now (ρ) 0.538"
Mag pri 10.17 Mag sec 11.32 delta mag (ΔM) 1.15 Spectral class K7V (yellow-orange)
Pri motion ra +164 Sec motion ra
Pri motion dec -074 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 106549 Constellation Hydra SAO 203284 HIP 59780
Tycho2 7232-00584-1 Gaia DR2 3472485972258777088 HD 106549 CD CD-30 9789
CP CP-30 3447 Distance 21.4 Distance ly 69.81
 
 
ORBITAL ELEMENTS
 
 
Period (P)62y± 0.2 Periastron (T)2047.37y± 0.2 Semi-major axis (a)0.68a± 0.004
Eccentricity (e)0.226± 0.003 Inclination (i)51.4°± 0.5 Longitude of periastron (ω)240.7°± 1
Node (Ω)116.9°± 0.5 Notes ReferenceDoc2018l
Equinox2000 Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 111.4 0.696
2001 114.7 0.715
2002 117.8 0.729
2003 120.8 0.740
2004 123.8 0.747
2005 126.7 0.751
2006 129.6 0.750
2007 132.5 0.747
2008 135.4 0.741
2009 138.4 0.732
2010 141.5 0.720
2011 144.7 0.707
2012 148.1 0.691
2013 151.6 0.674
2014 155.3 0.656
2015 159.2 0.637
2016 163.3 0.617
2017 167.7 0.598
2018 172.5 0.579
2019 177.5 0.561
2020 182.8 0.544
2021 188.5 0.529
2022 194.5 0.517
2023 200.7 0.508
2024 207.1 0.501
2025 213.7 0.498
2026 220.2 0.498
2027 226.8 0.502
2028 233.2 0.508
2029 239.4 0.517
2030 245.4 0.528


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


 
  


wds12155-3106c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 12155-3106 RST 1658 (HD 106549) : 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
12155-3106 RST1658 1996 23 95 0.6 10.17 11.32 K7V NOD 121526.96-310538.2
12155-3106 RST1658 2014 24 154 0.6 10.17 11.32 K7V O 121526.96-310538.2
12155-3106 RST1658 2018 25 174 0.6 10.17 11.32 K7V O 121526.96-310538.2
12155-3106 RST1658 2021 26 193 0.5 10.17 11.32 K7V O 121526.96-310538.2

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

 
 
WDS 12155-3106 RST 1658 (HD 106549) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 12155-3106 RST 1658 (HD 106549) : MEASURES
 
 
No records found.

 
 
WDS 12155-3106 (HD 106549) : VIRTUAL EYEPIECE
 
 

12155-3106 RST1658A mag 10.17 Sp K7V 12155-3106 RST1658B sep 0.5 P.A. 191.20 mag 11.32 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 12155-3106 (HD 106549) : ALADIN DSS IMAGE @ 12h 15m 26.96s -31° 05' 38.2"
 
 
 
 
WDS 12155-3106 RST 1658 (HD 106549) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

12155-3106 RST1658 distance=0' 12143-3113 TVB 250 distance=17' 12147-3144 PRO 99 distance=40' 12190-3042 KPP 268 distance=52' 12117-3036 HJ 4505AB distance=57' 12117-3036 KNP 2AC distance=57' 12153-3204 NSN 98BC distance=57' 12153-3204 LDS4197AB distance=60' 12153-3204 LDS4197Aa,Ab distance=60' 12112-3132 BRT2992 distance=61' 12173-3204 TDS8302 distance=64' 12115-3024 TDS8261 distance=66' 12187-3014 TDS8316 distance=67' 12102-3104 RST1650 distance=68' 12150-2946 I 81 distance=80' 12109-3010 B 1208 distance=81' 12213-3033 TOK 789 distance=82' 12169-2942 LDS 400 distance=85' 12160-2937 DAW 138 distance=89' 12208-3009 UC 2322 distance=89' 12185-3228 LDS4200 distance=93' 12226-3103 LDS 407 distance=94' 12110-2934 BRT2991 distance=108' 12238-3138 LDS5750 distance=114' 12238-3020 SEE 150 distance=117' 12066-3137 RUZ 2 distance=118' 12221-2940 TDS8351 distance=121' 12064-3145 TDS8224 distance=124' 12205-2920 UC 2320 distance=125' 12106-3254 RST2783 distance=125' 12170-2903 KPP2134 distance=125' 12064-3153 RST2778 distance=125' 12254-3108 I 1554CD distance=128' 12254-3108 SEE 152AB distance=128' 12254-3108 DAM2481AB,CD distance=128' 12168-2859 B 224 distance=129' 12180-3310 TDS8310 distance=129' 12177-3314 JSP 525 distance=132' 12211-2916 B 226 distance=132' 12203-2909 RST1661 distance=133' 12242-3224 HJ 4519AB distance=136' 12242-3224 DAW 61BC distance=136' 12064-3217 TVB 248 distance=136' 12121-2856 RST1654 distance=138' 12190-3318 HJ 4513 distance=140' 12046-3111 RSS 281AB distance=140' 12070-3235 RST1645 distance=141' 12062-3233 DAM 571 distance=142' 12199-2852 TDS8333 distance=146' 12185-3331 SKF2116BC distance=150' 12185-3331 SWR 129AB distance=151' 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 12155-3106 RST1658 193 0.5
Show 12143-3113 TVB 250 333 15.0 17
Show 12147-3144 PRO 99 157 8.3 40
Show 12190-3042 KPP 268 322 3.4 52
Show 12117-3036 HJ 4505 AB 276 10.1 57
Show 12117-3036 KNP 2 AC 116 37.3 57
Show 12153-3204 NSN 98 BC 332 2.4 57
Show 12153-3204 LDS4197 AB 344 163.1 60
Show 12153-3204 LDS4197 Aa,Ab 324 1.6 60
Show 12112-3132 BRT2992 34 2.7 61
Show 12173-3204 TDS8302 85 0.4 64
Show 12115-3024 TDS8261 290 0.5 66
Show 12187-3014 TDS8316 85 0.4 67
Show 12102-3104 RST1650 86 2.4 68
Show 12150-2946 I 81 343 2.7 80
Show 12109-3010 B 1208 294 4.2 81
Show 12213-3033 TOK 789 185 0.5 82
Show 12169-2942 LDS 400 199 6.7 85
Show 12160-2937 DAW 138 317 1.0 89
Show 12208-3009 UC 2322 205 17.4 89
Show 12185-3228 LDS4200 276 19.0 93
Show 12226-3103 LDS 407 40 9.8 94
Show 12110-2934 BRT2991 132 5.4 108
Show 12238-3138 LDS5750 146 140.0 114
Show 12238-3020 SEE 150 99 19.0 117
Show 12066-3137 RUZ 2 7 5.6 118
Show 12221-2940 TDS8351 66 0.5 121
Show 12064-3145 TDS8224 189 0.6 124
Show 12205-2920 UC 2320 79 18.6 125
Show 12106-3254 RST2783 86 1.8 125
Show 12170-2903 KPP2134 272 17.4 125
Show 12064-3153 RST2778 205 0.4 125
Show 12254-3108 I 1554 CD 72 1.2 128
Show 12254-3108 SEE 152 AB 85 2.5 128
Show 12254-3108 DAM2481 AB,CD 341 49.9 128
Show 12168-2859 B 224 151 0.8 129
Show 12180-3310 TDS8310 107 0.5 129
Show 12177-3314 JSP 525 242 1.0 132
Show 12211-2916 B 226 223 6.2 132
Show 12203-2909 RST1661 49 0.7 133
Show 12242-3224 HJ 4519 AB 89 8.9 136
Show 12242-3224 DAW 61 BC 138 1.0 136
Show 12064-3217 TVB 248 2 14.3 136
Show 12121-2856 RST1654 112 2.2 138
Show 12190-3318 HJ 4513 100 61.0 140
Show 12046-3111 RSS 281 AB 160 8.6 140
Show 12070-3235 RST1645 47 2.6 141
Show 12062-3233 DAM 571 2 10.9 142
Show 12199-2852 TDS8333 111 0.6 146
Show 12185-3331 SKF2116 BC 189 5.9 150
Show 12185-3331 SWR 129 AB 266 23.3 151

 
 
WDS 12155-3106 : COMPONENTS
 
 
  A
B pa=191.2°
sep=0.53"
 
 
12155-3106 A
 
 
Componente originario normalizzato AB Name HD 106549 Coord arcsec 2000 121526.96-310538.2 Mag 10.17
Spectral class K7V (yellow-orange) PmRA 164.00 PmDE -74.0 SAO 203284
HIP 59780 Tycho2 7232-00584-1 HD 106549 CD CD-30 9789
CP CP-30 3447
Tycho2
Tycho2 7232-00584-1 Pflag RAmdeg 183.86282263 DEmdeg -31.09409387
PmRA 163.8 PmDE -67.2 E RAmdeg 16 E DEmdeg 21
E pmRA 1.5 E pmDE 1.5 EpRAm 1987.57 EpDEm 1984.46
Num 10 Q RAmdeg 0.9 Q DEmdeg 1.0 Q pmRA 0.9
Q pmDE 1.1 BTmag 11.508 E BTmag 0.061 VTmag 9.934
E VTmag 0.026 Prox 999 TYC T HIP 59780
CCDM AB RAdeg 183.86238222 DEdeg -31.09393500 EpRA 1990 1.71
EpDE 1990 1.34 E RAdeg 18.2 E DEdeg 24.5 Posflg P
Corr 0.1
SAO
SAO 203284 DelFlag RA1950 PmRA1950 0.013
DE1950 PmDE1950 -0.095 Vmag 9.6 SpType K5
Double code Source 40 CatNum 6128 DM CD-30 9789
DMcomp BDsup HD 106549 M HD 0
GC RA1950rad 3.19760448 DE1950rad -0.53783004 PmRA2000 0.0132
PmDE2000 -0.09
Hipparcos
Catalog H HIP 59780 Proxy H RAhms 12 15 26.96
DEdms -31 05 38.2 Vmag 9.74 VarFlag R Vmag H
RAdeg 183.862 DEdeg -31.0939 AstroRef A Plx 49.62
CCDM 12155-3106 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 60 Rho 0.473 HD 106549 BD
CD CD-30 9789 CP CP-30 3447 Dm number -30 9789 VIred 1.63
SpType K5V R SpType Coord arcsec 2000 121526.96-310538.2
Hipparcos 2
HIP 59780 Sn 15 So 3 Nc 2
RArad 3.2090030118 DErad -0.542691781 Plx 46.72 PmRA 144
PmDE -58.79 E RArad 2.37 E DErad 1.01 E Plx 2.33
E pmRA 2.85 E pmDE 1.17 Hpmag 9.8437 E Hpmag 0.0018
SHp 0.021 VA 0 BV 1.383 E BV 0.005
VI 1.63
CCDM
Ccdm 12155-3106 RComp Comp A Note1
Note2 Discov num DRAs -2.90 DDEs 19.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 10.1 Sp K5 PmNote *
PmRA 168 PmDE -95 Dm number -30 9789 Cat1 CD
Name2 203284 Cat2 SAO HD 106549 M HD
ADS BDS M ADS BDS N IDS IDS 12102S3032A
HIC 59780
 
 
12155-3106 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 121526.95-310538.7 Mag 11.32 Calc delta mag 1.15
Calc coord yes
CCDM
Ccdm 12155-3106 RComp Comp B Note1 *
Note2 Discov num RST1658 DRAs DDEs
R dRAs Year 1951 Theta 149 Rho 0.6
Obs 4 Vmag 10.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 12102S3032B
HIC 59780