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Doubles in session


Current system
09149+0427
HEI 350
HD 79555


Nearby doubles
12' : 09156+0422
RED 17

14' : 09149+0413
BU 455

16' : 09143+0438
HEI 349

38' : 09164+0356
J 804

59' : 09164+0521
SKF1717

65' : 09153+0531
HJ 124AB

67' : 09163+0530
SLW 340

70' : 09149+0317
CVR1204

75' : 09197+0444
LDS3876

77' : 09133+0540
WFC 81AB

81' : 09123+0316
SKF1575

83' : 09200+0500
STF1343

84' : 09204+0409
BAL2834

88' : 09202+0352
BAL2833

91' : 09204+0502
SLW 350

92' : 09089+0430
BAL2830

92' : 09123+0550
TDS6392

95' : 09094+0340
BAL2831

95' : 09119+0303
SKF 970

96' : 09153+0602
A 2754

96' : 09139+0252
H 6 108

99' : 09127+0319
HJ 2486

101' : 09118+0258
SKF 969

105' : 09162+0610
SLW 339

107' : 09083+0509
SKF1840

108' : 09104+0550
SKF 964



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.

09149+0427 HEI 350 (HD 79555)

 
 
09h 14m 53.72s +04° 26' 34.4" P.A. 349.00 sep 0.5 mag 8.00,11.00 Sp K4V dist. 17.96 pc (58.59 l.y.)
 
 
Coord 2000 09149+0427 Discov num HEI 350 Comp Coord arcsec 2000 09 14 53.72 +04 26 34.4
Date first 1987 Date last 2021 Obs 36
Pa first 7 Pa last 348.7 P.A. Now (θ) 348.7°
Sep first 0.7 Sep last 0.547 Sep. Now (ρ) 0.547"
Mag pri 8.00 Mag sec 11.00 delta mag (ΔM) 3 Spectral class K4V (yellow-orange)
Pri motion ra -102 Sec motion ra
Pri motion dec +020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 79555 Constellation Hydra SAO 117534 HIP 45383
Tycho2 0230-00407-1 Gaia DR2 579567598502090240 HD 79555 GL Gl 339A
BD BD+05 2143 Distance 17.96 Distance ly 58.59
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)62.68y± 2.88 Periastron (T)1984.83y± 1.6 Semi-major axis (a)0.81a± 0.037
Eccentricity (e)0.2 Inclination (i)136°± 3 Longitude of periastron (ω)263.6°± 10.6
Node (Ω)102.3°± 2.1 Notesn ReferenceTok2016e
Equinox2000 Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 92.6 0.823
2001 88.7 0.828
2002 84.9 0.830
2003 81.0 0.828
2004 77.1 0.824
2005 73.2 0.818
2006 69.2 0.809
2007 65.1 0.799
2008 60.9 0.788
2009 56.5 0.776
2010 52.0 0.763
2011 47.4 0.751
2012 42.6 0.739
2013 37.7 0.728
2014 32.6 0.718
2015 27.4 0.710
2016 22.1 0.704
2017 16.7 0.700
2018 11.2 0.698
2019 5.8 0.698
2020 0.4 0.701
2021 355.0 0.705
2022 349.7 0.711
2023 344.5 0.719
2024 339.4 0.728
2025 334.5 0.738
2026 329.7 0.749
2027 325.0 0.759
2028 320.4 0.769
2029 316.0 0.778
2030 311.7 0.785


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


 
  


wds09149%2B0427b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)55.37y Periastron (T)1969.13y Semi-major axis (a)0.937a
Eccentricity (e)0.6 Inclination (i)125.5° Longitude of periastron (ω)72.8°
Node (Ω)344° Notesn ReferenceTok2020g
Equinox2000 Last observation2019 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 92.0 0.891
2001 88.6 0.875
2002 85.1 0.859
2003 81.4 0.844
2004 77.6 0.829
2005 73.7 0.815
2006 69.6 0.802
2007 65.4 0.789
2008 61.1 0.778
2009 56.7 0.768
2010 52.1 0.758
2011 47.4 0.749
2012 42.7 0.741
2013 37.8 0.733
2014 32.8 0.724
2015 27.7 0.715
2016 22.4 0.704
2017 17.0 0.690
2018 11.2 0.671
2019 5.1 0.645
2020 358.4 0.608
2021 350.6 0.557
2022 340.9 0.486
2023 327.0 0.390
2024 302.5 0.279
2025 255.9 0.221
2026 211.7 0.292
2027 189.8 0.416
2028 178.0 0.535
2029 170.2 0.637
2030 164.5 0.722


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


 
  


wds09149%2B0427d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 09149+0427 HEI 350 (HD 79555) : NOTES
 
 
discov_num notes refcode
HEI 350 A long-period astrometric binary, now resolved.
 
 
REFERENCES
 
 
refcode metd author reference
Tok2016e orb - Tokovinin, A. 2016AJ....152..138T
Tok2016e AJ 152, 138, 2016
Tok2020g orb - Tokovinin, A. 2020IAUDS.201....1A
Tok2020g Inf. Circ. 201, 1, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 HEI Heintz, W.D.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09149+0427 HEI 350 1988 2 5 0.6 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2009 3 54 0.8 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2011 5 47 0.8 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2014 8 32 0.7 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2015 9 27 0.7 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2017 16 16 0.7 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2018 19 10 0.7 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2019 21 3 0.6 8.00 11.00 K0 NO 091453.72+042634.4
09149+0427 HEI 350 2021 29 349 0.5 8.00 11.00 K4V NO 091453.72+042634.4

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

 
 
WDS 09149+0427 HEI 350 (HD 79555) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 09149+0427 HEI 350 (HD 79555) : MEASURES
 
 
No records found.

 
 
WDS 09149+0427 (HD 79555) : VIRTUAL EYEPIECE
 
 

09149+0427 HEI 350A mag 8 Sp K4V 09149+0427 HEI 350B sep 0.6 P.A. 348.70 mag 11 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 09149+0427 (HD 79555) : ALADIN DSS IMAGE @ 09h 14m 53.72s +04° 26' 34.4"
 
 
 
 
WDS 09149+0427 HEI 350 (HD 79555) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

09149+0427 HEI 350 distance=0' 09156+0422 RED 17 distance=12' 09149+0413 BU 455 distance=14' 09143+0438 HEI 349 distance=16' 09164+0356 J 804 distance=38' 09164+0521 SKF1717 distance=59' 09153+0531 HJ 124AB distance=65' 09153+0531 HJ 124AC distance=65' 09153+0531 SKF1841AD distance=65' 09163+0530 SLW 340 distance=67' 09149+0317 CVR1204 distance=70' 09197+0444 LDS3876 distance=75' 09133+0540 WFC 81AB distance=77' 09123+0316 SKF1575 distance=81' 09200+0500 STF1343 distance=83' 09204+0409 BAL2834 distance=84' 09202+0352 BAL2833 distance=88' 09204+0502 SLW 350 distance=91' 09089+0430 BAL2830 distance=92' 09123+0550 TDS6392 distance=92' 09094+0340 BAL2831 distance=95' 09119+0303 SKF 970 distance=95' 09153+0602 A 2754 distance=96' 09139+0252 H 6 108 distance=96' 09127+0319 HJ 2486 distance=99' 09118+0258 SKF 969 distance=101' 09162+0610 SLW 339 distance=105' 09083+0509 SKF1840 distance=107' 09104+0550 SKF 964 distance=108' 09090+0536 DAM1547CD distance=112' 09090+0536 HDS1330AB distance=113' 09090+0536 GII 166Aa,Ab distance=113' 09181+0245 A 2556 distance=113' 09086+0538 DAM1546 distance=119' 09180+0245 GRV1023 distance=119' 09163+0230 SLE 584 distance=119' 09093+0300 TDS6356AC distance=121' 09195+0607 HJ 129 distance=121' 09095+0256 STT 197 distance=121' 09203+0559 LNV 1 distance=123' 09067+0406 BAL2829 distance=124' 09080+0313 GRV1019 distance=124' 09104+0242 GWP1141 distance=125' 09163+0221 KPP3218 distance=127' 09144+0219 HJ 2489AB distance=128' 09144+0219 HJ 2489AC distance=128' 09144+0219 B 2674AD distance=128' 09228+0519 HJ 133 distance=130' 09127+0219 BAL1858 distance=132' 09082+0555 SKF 882 distance=134' 09058+0432 GRV 776 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 09149+0427 HEI 350 349 0.5
Show 09156+0422 RED 17 215 0.6 12
Show 09149+0413 BU 455 68 1.8 14
Show 09143+0438 HEI 349 231 1.6 16
Show 09164+0356 J 804 279 4.0 38
Show 09164+0521 SKF1717 214 1.3 59
Show 09153+0531 HJ 124 AB 71 15.4 65
Show 09153+0531 HJ 124 AC 242 62.1 65
Show 09153+0531 SKF1841 AD 274 17.6 65
Show 09163+0530 SLW 340 82 81.2 67
Show 09149+0317 CVR1204 105 4.9 70
Show 09197+0444 LDS3876 114 12.6 75
Show 09133+0540 WFC 81 AB 76 8.1 77
Show 09123+0316 SKF1575 355 39.6 81
Show 09200+0500 STF1343 275 9.1 83
Show 09204+0409 BAL2834 4 19.1 84
Show 09202+0352 BAL2833 165 12.6 88
Show 09204+0502 SLW 350 27 10.7 91
Show 09089+0430 BAL2830 275 3.2 92
Show 09123+0550 TDS6392 130 0.6 92
Show 09094+0340 BAL2831 34 8.4 95
Show 09119+0303 SKF 970 155 1.2 95
Show 09153+0602 A 2754 343 1.1 96
Show 09139+0252 H 6 108 268 148.7 96
Show 09127+0319 HJ 2486 121 12.4 99
Show 09118+0258 SKF 969 156 0.8 101
Show 09162+0610 SLW 339 9 106.3 105
Show 09083+0509 SKF1840 154 20.3 107
Show 09104+0550 SKF 964 279 2.1 108
Show 09090+0536 DAM1547 CD 293 1.3 112
Show 09090+0536 HDS1330 AB 241 0.4 113
Show 09090+0536 GII 166 Aa,Ab 119 0.1 113
Show 09181+0245 A 2556 354 1.0 113
Show 09086+0538 DAM1546 83 4.8 119
Show 09180+0245 GRV1023 193 24.5 119
Show 09163+0230 SLE 584 244 29.7 119
Show 09093+0300 TDS6356 AC 111 0.6 121
Show 09195+0607 HJ 129 244 10.0 121
Show 09095+0256 STT 197 65 1.4 121
Show 09203+0559 LNV 1 232 14.9 123
Show 09067+0406 BAL2829 76 9.7 124
Show 09080+0313 GRV1019 148 15.0 124
Show 09104+0242 GWP1141 351 5.3 125
Show 09163+0221 KPP3218 195 1.7 127
Show 09144+0219 HJ 2489 AB 248 20.9 128
Show 09144+0219 HJ 2489 AC 298 101.0 128
Show 09144+0219 B 2674 AD 145 82.4 128
Show 09228+0519 HJ 133 316 16.8 130
Show 09127+0219 BAL1858 186 13.8 132
Show 09082+0555 SKF 882 337 1.5 134
Show 09058+0432 GRV 776 239 71.9 136

 
 
WDS 09149+0427 : COMPONENTS
 
 
  A
B pa=348.7°
sep=0.55"
 
 
09149+0427 A
 
 
Componente originario normalizzato AB Name HD 79555 Coord arcsec 2000 091453.72+042634.4 Mag 8
Spectral class K4V (yellow-orange) PmRA -102.00 PmDE 20.0 SAO 117534
HIP 45383 Tycho2 0230-00407-1 HD 79555 BD BD+05 2143
Tycho2
Tycho2 0230-00407-1 Pflag RAmdeg 138.72357988 DEmdeg 4.44295145
PmRA -114.4 PmDE 26.8 E RAmdeg 7 E DEmdeg 8
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.08 EpDEm 1990.62
Num 10 Q RAmdeg 1.9 Q DEmdeg 2.6 Q pmRA 2.0
Q pmDE 2.8 BTmag 9.250 E BTmag 0.020 VTmag 8.069
E VTmag 0.013 Prox 999 TYC T HIP 45383
CCDM RAdeg 138.72384389 DEdeg 4.44288667 EpRA 1990 1.69
EpDE 1990 1.48 E RAdeg 6.5 E DEdeg 8.2 Posflg
Corr 0.2
SAO
SAO 117534 DelFlag RA1950 PmRA1950 -0.0081
DE1950 PmDE1950 0.03 Vmag 8.4 SpType K0
Double code Source 32 CatNum 5022 DM BD+05 2143
DMcomp BDsup HD 79555 M HD 0
GC RA1950rad 2.40977248 DE1950rad 0.08117121 PmRA2000 -0.0079
PmDE2000 0.034
Hipparcos
Catalog H HIP 45383 Proxy RAhms 09 14 53.72
DEdms +04 26 34.4 Vmag 7.91 VarFlag R Vmag H
RAdeg 138.724 DEdeg 4.44289 AstroRef Plx 54.25
CCDM N CCDM Nsys Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 79555 BD BD+05 2143
CD CP Dm number +05 2143 VIred 1.19
SpType K0 R SpType Coord arcsec 2000 091453.72+042634.4
Hipparcos 2
HIP 45383 Sn 1 So 1 Nc 1
RArad 2.4211879954 DErad 0.0775430586 Plx 55.68 PmRA -114.01
PmDE 5.46 E RArad 1.15 E DErad 0.72 E Plx 1.41
E pmRA 1.49 E pmDE 0.84 Hpmag 8.0744 E Hpmag 0.0016
SHp 0.013 VA 0 BV 1.035 E BV 0.039
VI 1.19
CCDM
Ccdm 09149+0427 RComp Comp A Note1
Note2 Discov num DRAs -0.31 DDEs -25.8
R dRAs 81 Year Theta Rho
Obs 2 Vmag 8.0 Sp K0 PmNote @
PmRA -103 PmDE 22 Dm number +05 2143 Cat1 BD
Name2 +04 1288 Cat2 AGK2/3 HD 79555 M HD
ADS BDS M ADS BDS N N IDS * IDS 09097N0451A
HIC 45383
 
 
09149+0427 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 091453.71+042634.9 Mag 11 Calc delta mag 3
Calc coord yes
CCDM
Ccdm 09149+0427 RComp Comp B Note1
Note2 Discov num HEI 350 DRAs DDEs
R dRAs Year 1987 Theta 6 Rho 0.6
Obs 2 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS * IDS 09097N0451B
HIC 45383