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Current system
09239+2754
STT 201 AB
HD 81027


Nearby doubles
17' : 09244+2739
TDS6540

36' : 09221+2820
GRV 786

36' : 09245+2719
CVR1221

45' : 09212+2728
BU 1422AB

54' : 09260+2839
A 222

58' : 09201+2725
SLE 491

60' : 09282+2811
COU1121

66' : 09216+2656
AZC 62

69' : 09279+2838
CBL 279

70' : 09187+2751
SLE 489

74' : 09247+2641
HJ 813AB

78' : 09187+2719
SLE 490

83' : 09251+2915
CTT 22

83' : 09177+2803
SLE 488

85' : 09297+2833
BRT 18

85' : 09301+2736
MLB 523

89' : 09179+2834
STF3121AB

92' : 09176+2833
LDS6225

97' : 09167+2811
SLE 486

98' : 09188+2647
LDS6226

98' : 09186+2902
GRV 783

98' : 09236+2931
CVR1218

99' : 09218+2929
CVR1216

100' : 09251+2616
BU 1070

101' : 09251+2933
STT 202AB

103' : 09162+2750
OCC9217



Selections
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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.

09239+2754 STT 201 AB (HD 81027)

 
 
09h 23m 54.55s +27° 53' 54.9" P.A. 206.00 sep 1.4 mag 8.48,9.48 Sp F5 dist. 156.25 pc (509.69 l.y.)
 
 
Coord 2000 09239+2754 Discov num STT 201 Comp AB Coord arcsec 2000 09 23 54.55 +27 53 54.9
Date first 1844 Date last 2017 Obs 97
Pa first 225 Pa last 206.1 P.A. Now (θ) 206.1°
Sep first 1.2 Sep last 1.373 Sep. Now (ρ) 1.373"
Mag pri 8.48 Mag sec 9.48 delta mag (ΔM) 1 Spectral class F5 (yellow-white)
Pri motion ra -005 Sec motion ra -005
Pri motion dec -040 Sec motion dec -040
Notes O (Orbital solution)
This double is physical.
 
 
09239+2754 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 81027 09 23 55 +27 53 55 STT 201 AB 2017 97 206 1.4 8.48 9.48 1.00 Y <===
Show 09 23 55 +27 53 55 STT 201 AC 2015 10 317 34.0 8.48 13.01 4.53
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 81027 Constellation Leo HIP 46088 Tycho2 1958-01602-1
Gaia DR2 695286730560737664 HD 81027 ADS 7344 BD BD+28 1745
Distance 156.25 Distance ly 509.69
 
 
ORBITAL ELEMENTS
 
 
Period (P)1883y± 170 Periastron (T)2288y± 32.3 Semi-major axis (a)1.392a± 0.087
Eccentricity (e)0.274± 0.046 Inclination (i)140.3°± 2.9 Longitude of periastron (ω)268.2°± 15.2
Node (Ω)29.4°± 5.5 Notes ReferencePkO2018b
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 207.3 1.260
2001 207.1 1.258
2002 207.0 1.257
2003 206.8 1.255
2004 206.6 1.254
2005 206.4 1.253
2006 206.3 1.251
2007 206.1 1.250
2008 205.9 1.248
2009 205.7 1.247
2010 205.6 1.245
2011 205.4 1.244
2012 205.2 1.242
2013 205.0 1.241
2014 204.8 1.239
2015 204.7 1.238
2016 204.5 1.236
2017 204.3 1.235
2018 204.1 1.233
2019 203.9 1.231
2020 203.8 1.230
2021 203.6 1.228
2022 203.4 1.227
2023 203.2 1.225
2024 203.0 1.224
2025 202.9 1.222
2026 202.7 1.220
2027 202.5 1.219
2028 202.3 1.217
2029 202.1 1.216
2030 201.9 1.214


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


 
  


wds09239%2B2754a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 09239+2754 STT 201 AB (HD 81027) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
PkO2018b orb Baidin, A.E., Perov, N.I. & Romanenko, L.G. .
PkO2018b Vestnik of Saint Petersburg University, Volume 5 (63), 148, 2018
 
 
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
09239+2754 STT 201 AB 2005 85 204 1.2 8.48 9.48 F5 D 092354.55+275354.9
09239+2754 STT 201 AB 2010 88 207 1.2 8.48 9.48 F5 D 092354.55+275354.9
09239+2754 STT 201 AB 2013 91 205 1.2 8.48 9.48 F5 D 092354.55+275354.9
09239+2754 STT 201 AB 2015 93 206 1.2 8.48 9.48 F5 092354.55+275354.9
09239+2754 STT 201 AB 2017 94 206 1.4 8.48 9.48 F5 092354.55+275354.9

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

 
 
WDS 09239+2754 STT 201 AB (HD 81027) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 09239+2754 STT 201 AB (HD 81027) : MEASURES
 
 
No records found.

 
 
WDS 09239+2754 (HD 81027) : VIRTUAL EYEPIECE
 
 

09239+2754 STT 201A mag 8.48 Sp F5 09239+2754 STT 201B sep 1.3 P.A. 203.40 mag 9.48 09239+2754 STT 201C sep 32.2 P.A. 320.20 mag 13.01 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 09239+2754 (HD 81027) : ALADIN DSS IMAGE @ 09h 23m 54.55s +27° 53' 54.9"
 
 
 
 
WDS 09239+2754 STT 201 AB (HD 81027) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

09239+2754 STT 201AB distance=0' 09244+2739 TDS6540 distance=17' 09221+2820 GRV 786 distance=36' 09245+2719 CVR1221 distance=36' 09212+2728 BU 1422AB distance=45' 09212+2728 HJ 810AC distance=45' 09260+2839 A 222 distance=54' 09262+2838 A 223AD distance=54' 09201+2725 SLE 491 distance=58' 09282+2811 COU1121 distance=60' 09216+2656 AZC 62 distance=66' 09279+2838 CBL 279 distance=69' 09187+2751 SLE 489 distance=70' 09247+2641 HDS1351Aa,Ab distance=74' 09247+2641 HJ 813AB distance=74' 09247+2641 HJ 813AC distance=74' 09187+2719 SLE 490 distance=78' 09251+2915 CTT 22 distance=83' 09177+2803 SLE 488 distance=83' 09297+2833 BRT 18 distance=85' 09301+2736 MLB 523 distance=85' 09179+2834 STF3121AB distance=89' 09179+2834 ABT 6AB,C distance=89' 09179+2834 ABT 6AB,D distance=89' 09176+2833 LDS6225 distance=92' 09167+2811 SLE 486 distance=97' 09188+2647 LDS6226 distance=98' 09186+2902 GRV 783 distance=98' 09236+2931 CVR1218 distance=98' 09218+2929 CVR1216 distance=99' 09251+2616 BU 1070 distance=100' 09251+2933 STT 202AB distance=101' 09251+2933 BU 1423AC distance=101' 09251+2933 CTT 23AD distance=101' 09251+2933 CTT 23CD distance=103' 09162+2750 OCC9217 distance=103' 09168+2838 SLE 487 distance=104' 09247+2611 BU 105AB (Al Minliar al Asad) distance=104' 09247+2611 BU 105AC (Al Minliar al Asad) distance=104' 09163+2730 SLE 484 distance=105' 09173+2656 AZC 61 distance=106' 09309+2658 LDS 909AB distance=109' 09309+2658 LMP 7AC distance=109' 09309+2658 LMP 7AD distance=109' 09287+2923 UC 1799 distance=110' 09155+2755 STF1327CD distance=111' 09155+2755 STF1327BC distance=111' 09155+2755 STF1327AB distance=111' 09155+2755 STF1327AC distance=111' 09166+2853 CVR1208 distance=113' 09250+2601 L 9 distance=114' 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 09239+2754 STT 201 AB 206 1.4
Show 09239+2754 STT 201 AC 317 34.0
Show 09244+2739 TDS6540 114 0.5 17
Show 09221+2820 GRV 786 127 29.7 36
Show 09245+2719 CVR1221 46 4.2 36
Show 09212+2728 BU 1422 AB 358 1.9 45
Show 09212+2728 HJ 810 AC 26 22.2 45
Show 09260+2839 A 222 4 0.4 54
Show 09262+2838 A 223 AD 7 2.5 54
Show 09201+2725 SLE 491 244 28.2 58
Show 09282+2811 COU1121 35 1.0 60
Show 09216+2656 AZC 62 60 29.5 66
Show 09279+2838 CBL 279 115 45.8 69
Show 09187+2751 SLE 489 296 12.8 70
Show 09247+2641 HDS1351 Aa,Ab 195 0.2 74
Show 09247+2641 HJ 813 AB 64 22.9 74
Show 09247+2641 HJ 813 AC 100 30.0 74
Show 09187+2719 SLE 490 324 25.9 78
Show 09251+2915 CTT 22 43 89.0 83
Show 09177+2803 SLE 488 226 22.8 83
Show 09297+2833 BRT 18 94 3.5 85
Show 09301+2736 MLB 523 99 5.5 85
Show 09179+2834 STF3121 AB 230 0.4 89
Show 09179+2834 ABT 6 AB,C 44 173.2 89
Show 09179+2834 ABT 6 AB,D 133 165.9 89
Show 09176+2833 LDS6225 291 8.9 92
Show 09167+2811 SLE 486 197 12.1 97
Show 09188+2647 LDS6226 303 76.5 98
Show 09186+2902 GRV 783 136 36.0 98
Show 09236+2931 CVR1218 101 4.7 98
Show 09218+2929 CVR1216 218 3.2 99
Show 09251+2616 BU 1070 93 0.4 100
Show 09251+2933 STT 202 AB 194 17.6 101
Show 09251+2933 BU 1423 AC 52 155.2 101
Show 09251+2933 CTT 23 AD 2 60.6 101
Show 09251+2933 CTT 23 CD 253 124.7 103
Show 09162+2750 OCC9217 36 0.0 103
Show 09168+2838 SLE 487 146 14.0 104
Show Al Minliar al Asad 09247+2611 BU 105 AB 209 2.0 104
Show Al Minliar al Asad 09247+2611 BU 105 AC 212 147.7 104
Show 09163+2730 SLE 484 130 9.5 105
Show 09173+2656 AZC 61 359 33.9 106
Show 09309+2658 LDS 909 AB 30 86.9 109
Show 09309+2658 LMP 7 AC 352 65.0 109
Show 09309+2658 LMP 7 AD 65 64.2 109
Show 09287+2923 UC 1799 59 31.1 110
Show 09155+2755 STF1327 CD 358 2.1 111
Show 09155+2755 STF1327 BC 13 23.1 111
Show 09155+2755 STF1327 AB 32 5.3 111
Show 09155+2755 STF1327 AC 16 27.8 111
Show 09166+2853 CVR1208 90 3.3 113

 
 
WDS 09239+2754 : COMPONENTS
 
 
  A B
B pa=203.4°
sep=1.34"
 
C pa=320.2°
sep=32.21"
pa=322.3°
sep=32.83"
 
 
09239+2754 A
 
 
Name HD 81027 Coord arcsec 2000 092354.55+275354.9 Mag 8.48 Spectral class F5 (yellow-white)
PmRA -5.00 PmDE -40.0 HIP 46088 Tycho2 1958-01602-1
HD 81027 BD BD+28 1745
Tycho2
Tycho2 1958-01602-1 Pflag P RAmdeg 140.97723160 DEmdeg 27.89842724
PmRA -5.2 PmDE -40.1 E RAmdeg 6 E DEmdeg 8
E pmRA 1.9 E pmDE 1.9 EpRAm 1991.75 EpDEm 1991.35
Num 5 Q RAmdeg 0.5 Q DEmdeg 0.6 Q pmRA 0.6
Q pmDE 0.6 BTmag 8.991 E BTmag 0.018 VTmag 8.479
E VTmag 0.014 Prox 13 TYC T HIP 46088
CCDM A RAdeg 140.97728389 DEdeg 27.89857556 EpRA 1990 1.89
EpDE 1990 1.61 E RAdeg 6.4 E DEdeg 8.1 Posflg D
Corr 0.1
Hipparcos
Catalog H HIP 46088 Proxy H RAhms 09 23 54.55
DEdms +27 53 54.9 Vmag 8.11 VarFlag R Vmag G
RAdeg 140.977 DEdeg 27.8986 AstroRef A Plx 6.49
CCDM 09239+2754 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 209 Rho 1.292 HD 81027 BD BD+28 1745
CD CP Dm number +28 1745 VIred 0.57
SpType F5 R SpType Coord arcsec 2000 092354.55+275354.9
Hipparcos 2
HIP 46088 Sn 15 So 3 Nc 2
RArad 2.4605178034 DErad 0.4869220605 Plx 6.4 PmRA -4.48
PmDE -43.22 E RArad 1.07 E DErad 0.56 E Plx 1.01
E pmRA 1.11 E pmDE 0.53 Hpmag 8.2118 E Hpmag 0.001
SHp 0.008 VA 0 BV 0.5 E BV 0.015
VI 0.57
CCDM
Ccdm 09239+2754 RComp Comp A Note1
Note2 Discov num DRAs 0.54 DDEs -6.1
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.3 Sp F5 PmNote *
PmRA -1 PmDE -47 Dm number +28 1745 Cat1 BD
Name2 +28 1002 Cat2 AGK2/3 HD 81027 M HD
ADS BDS A 7344 M ADS BDS N IDS IDS 09180N2820A
HIC 46088
 
 
09239+2754 B
 
 
Coord arcsec 2000 092354.51+275353.7 Mag 9.48 PmRA -5.00 PmDE -40.0
Tycho2 1958-01602-2 Calc delta mag 1 Calc coord yes
Tycho2
Tycho2 1958-01602-2 Pflag P RAmdeg 140.97723160 DEmdeg 27.89842724
PmRA -5.2 PmDE -40.1 E RAmdeg 6 E DEmdeg 8
E pmRA 1.9 E pmDE 1.9 EpRAm 1991.75 EpDEm 1991.35
Num 5 Q RAmdeg 0.5 Q DEmdeg 0.6 Q pmRA 0.6
Q pmDE 0.6 BTmag 10.102 E BTmag 0.030 VTmag 9.482
E VTmag 0.023 Prox 13 TYC HIP 46088
CCDM B RAdeg 140.97706667 DEdeg 27.89827250 EpRA 1990 1.88
EpDE 1990 1.60 E RAdeg 13.4 E DEdeg 17.3 Posflg D
Corr 0.1
CCDM
Ccdm 09239+2754 RComp Comp B Note1
Note2 Discov num STT 201 DRAs DDEs
R dRAs Year 1959 Theta 213 Rho 1.2
Obs 99 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7344 M ADS BDS N IDS IDS 09180N2820B
HIC 46088
 
 
09239+2754 C
 
 
Coord arcsec 2000 092353.00+275419.6 Mag 13.01 PmRA -10.00 PmDE 2.0
Calc delta mag 4.53 Calc coord yes
CCDM
Ccdm 09239+2754 RComp Comp C Note1
Note2 Discov num STT 201 DRAs -1.21 DDEs 18.7
R dRAs 65 Year 1844 Theta 310 Rho 30.3
Obs 4 Vmag 12.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7344 M ADS BDS N IDS IDS 09180N2820C
HIC