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Current system
10279+3642
HU 879
Bet LMi


Nearby doubles
25' : 10262+3628
ES 302

29' : 10255+3647
HU 877

40' : 10292+3718
RAO 248

48' : 10312+3707
HU 880

58' : 10250+3558
HJ 3326

69' : 10222+3649
SKF 199

76' : 10219+3704
BFR 5

78' : 10296+3757
HJ 2532AB

85' : 10322+3536
SKF2689

87' : 10333+3740
STF1443

88' : 10218+3555
LDS1240

94' : 10207+3719
ES 1639

98' : 10359+3656
DEA 46

98' : 10282+3819
LDS 915AB

101' : 10330+3523
HU 881

104' : 10216+3754
LDS1237

104' : 10301+3502
HDS1509

108' : 10191+3620
ES 2566

110' : 10289+3453
SHY 215

112' : 10290+3452
A 2152AB

113' : 10320+3824
SLW 486

115' : 10185+3630
HJ 2525

117' : 10186+3612
TDS7170

117' : 10229+3823
CVR1286

122' : 10218+3819
LDS3982

124' : 10184+3730
HU 875



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

10279+3642 HU 879 (Bet LMi)

 
 
10h 27m 53.09s +36° 42' 26.9" P.A. 226.00 sep 0.5 mag 4.62,6.04 Sp G8III dist. 47.19 pc (153.93 l.y.)
 
 
Coord 2000 10279+3642 Discov num HU  879 Comp Coord arcsec 2000 10 27 53.09 +36 42 26.9
Date first 1904 Date last 2018 Obs 172
Pa first 231 Pa last 226.3 P.A. Now (θ) 229.6°
Sep first 0.5 Sep last 0.51 Sep. Now (ρ) 0.428"
Mag pri 4.62 Mag sec 6.04 delta mag (ΔM) 1.42 Spectral class G8III (yellow)
Pri motion ra -118 Sec motion ra
Pri motion dec -101 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Bet LMi Constellation Leo Minor SAO 62053 HIP 51233
Tycho2 2517-01209-1 Gaia DR2 754644862217331584 HD 90537 HR 4100
GC 14358 ADS 7780 BD BD+37 2080 Bayer Beta Leonis Minoris
Bayer name Bet LMi Flamsteed 31 Leonis Minoris Flamsteed name 31 LMi FK5 390
Distance 47.19 Distance ly 153.93 Bayer greek β LMi
 
 
ORBITAL ELEMENTS
 
 
Period (P)13965d (38.23y)± 40 Periastron (T)51411.1d (1999.635y)± 4.8 Semi-major axis (a)0.3782a± 0.0007
Eccentricity (e)0.68± 0.002 Inclination (i)81.4°± 0.1 Longitude of periastron (ω)35.7°± 0.12
Node (Ω)40.7°± 0.1 Notesn ReferenceWaX2020
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 55.1 0.065
2001 196.2 0.058
2002 211.9 0.159
2003 215.7 0.243
2004 217.6 0.312
2005 218.9 0.368
2006 219.9 0.414
2007 220.7 0.452
2008 221.3 0.483
2009 221.9 0.507
2010 222.5 0.526
2011 223.0 0.540
2012 223.5 0.550
2013 224.0 0.555
2014 224.5 0.557
2015 224.9 0.555
2016 225.4 0.550
2017 225.9 0.541
2018 226.4 0.530
2019 227.0 0.515
2020 227.5 0.498
2021 228.2 0.477
2022 228.8 0.454
2023 229.6 0.428
2024 230.5 0.400
2025 231.5 0.369
2026 232.7 0.335
2027 234.1 0.299
2028 236.0 0.261
2029 238.6 0.220
2030 242.3 0.178


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


 
  


wds10279%2B3642d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 10279+3642 HU 879 (Bet LMi) : NOTES
 
 
discov_num notes refcode
HU 879 bet LMi = 31 LMi. G8III-IV.
Combined visual-spectroscopic orbits by Heintz (1981,1982). Visual Hei1981f
observations cover only a narrow apastron arc. Hei1982e
Only elements P and T have been amended by Starikova (1977) from the Sta1977a
orbit of Baize (1950). Baz1950b
Gontcharov & Kiyaeva (2002) photocentric (astrometric) orbit is based Gon2002a
on a combination of ground-based catalogs with Hipparcos.
This object was misidentified as HO 879 in McAlister & Hendry (1982). McA1982d
Malkov et al. (2012) derive dynamical and spectroscopic masses
3.37 +/- 0.94 and 2.63 Msun, respectively. Mlk2012
Combined solution leads to masses of 2.98 +/- 0.10 and 1.92 +/- 0.04 WaX2020
\msun for A and B, respectively. Orbital parallax of 19.6 +/- 0.2 mas
leads to luminosities of 50.7 +/- 1.8 and 9.1 +/- 4.1 \lsun for A and
B, respectively.
 
 
REFERENCES
 
 
refcode metd author reference
Baz1950b orb - Baize, P. 1950JO.....33..125B
Baz1950b J. Obs. 33, 125-133, 1950
Gon2002a orb - Gontcharov, G.A. & Kiyaeva, O.V. 2002SvAL...28..261G
Gon2002a SvAL 28, 261, 2002
Hei1981f orb - Heintz, W.D. 1981IAUDS..84....1H
Hei1981f Inf. Circ. 84, 1, 1981
Hei1982e orb - Heintz, W.D. 1982PASP...94..705H
Hei1982e PASP 94, 705, 1982
McA1982d Sc j McAlister, H.A. & Hendry, E.M. 1982ApJS...49..267M
McA1982d ApJS 49, 267, 1982
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sta1977a orb - Starikova, G.A. 1977ATsir.961....7S
Sta1977a Astron. Tsirk. #961, 7, 1977
WaX2020 orb j Wang, X., Xia, F. & Fu, Y. 2020AJ....160..141W
WaX2020 AJ 160, 141, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 HU Hussey, W.F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10279+3642 HU 879 2007 144 219 0.5 4.62 6.04 G8III NOD 102753.09+364226.9
10279+3642 HU 879 2010 150 224 0.6 4.62 6.04 G8III NOD 102753.09+364226.9
10279+3642 HU 879 2012 165 225 0.5 4.62 6.04 G8III NOD 102753.09+364226.9
10279+3642 HU 879 2016 167 227 0.5 4.62 6.04 G8III NO 102753.09+364226.9
10279+3642 HU 879 2017 168 228 0.5 4.62 6.04 G8III NO 102753.09+364226.9
10279+3642 HU 879 2018 172 226 0.5 4.62 6.04 G8III NO 102753.09+364226.9

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

 
 
WDS 10279+3642 HU 879 (Bet LMi) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10279+3642 HU 879 (Bet LMi) : MEASURES
 
 
No records found.

 
 
WDS 10279+3642 (Bet LMi) : VIRTUAL EYEPIECE
 
 

10279+3642 HU 879A mag 4.62 Sp G8III 10279+3642 HU 879B sep 0.5 P.A. 220.00 mag 6.04 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 10279+3642 (Bet LMi) : ALADIN DSS IMAGE @ 10h 27m 53.09s +36° 42' 26.9"
 
 
 
 
WDS 10279+3642 HU 879 (Bet LMi) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

10279+3642 HU 879 distance=0' 10262+3628 ES 302 distance=25' 10255+3647 HU 877 distance=29' 10292+3718 RAO 248 distance=40' 10312+3707 HU 880 distance=48' 10250+3558 HJ 3326 distance=58' 10222+3649 SKF 199 distance=69' 10219+3704 BFR 5 distance=76' 10296+3757 HJ 2532AB distance=78' 10296+3757 FOX 166AC distance=78' 10322+3536 SKF2689 distance=85' 10333+3740 STF1443 distance=87' 10218+3555 LDS1240 distance=88' 10207+3719 ES 1639 distance=94' 10282+3819 LDS 915BC distance=95' 10359+3656 DEA 46 distance=98' 10282+3819 LDS 915AB distance=98' 10282+3819 LDS 915AC distance=98' 10330+3523 HU 881 distance=101' 10216+3754 LDS1237 distance=104' 10301+3502 HDS1509 distance=104' 10191+3620 ES 2566 distance=108' 10289+3453 SHY 215 distance=110' 10290+3452 A 2152AB distance=112' 10290+3452 A 2152AB,C distance=112' 10320+3824 SLW 486 distance=113' 10185+3630 HJ 2525 distance=115' 10186+3612 TDS7170 distance=117' 10229+3823 CVR1286 distance=117' 10218+3819 LDS3982 distance=122' 10184+3730 HU 875 distance=124' 10199+3808 UC 1915 distance=129' 10351+3508 BU 1427AB distance=129' 10351+3508 STF1449AC distance=129' 10249+3849 COU1745 distance=133' 10371+3759 COU1571 distance=134' 10265+3418 TDS7272 distance=146' 10242+3903 UC 1923 distance=147' 10221+3427 CBL 307 distance=153' 10403+3606 CBL 316 distance=154' 10244+3411 STTA104 distance=158' 10246+3410 ITF 23 distance=158' 10218+3904 LDS3983 distance=159' 10266+3401 LDS1242 distance=162' 10165+3815 KPP3813 distance=165' 10229+3410 HJL1059 distance=165' 10376+3446 COU1417 distance=167' 10334+3410 LDS 916 distance=167' 10176+3449 KPP1519 distance=170' 10188+3854 SLW 462 distance=171' 10268+3351 TDS7275 distance=172' 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 10279+3642 HU 879 226 0.5
Show 10262+3628 ES 302 345 3.0 25
Show 10255+3647 HU 877 250 1.7 29
Show 10292+3718 RAO 248 306 2.7 40
Show 10312+3707 HU 880 144 0.9 48
Show 10250+3558 HJ 3326 177 19.5 58
Show 10222+3649 SKF 199 347 3.9 69
Show 10219+3704 BFR 5 125 22.2 76
Show 10296+3757 HJ 2532 AB 70 13.0 78
Show 10296+3757 FOX 166 AC 251 203.5 78
Show 10322+3536 SKF2689 355 1.1 85
Show 10333+3740 STF1443 160 5.3 87
Show 10218+3555 LDS1240 144 13.2 88
Show 10207+3719 ES 1639 133 2.2 94
Show 10282+3819 LDS 915 BC 211 7.6 95
Show 10359+3656 DEA 46 240 17.9 98
Show 10282+3819 LDS 915 AB 151 270.6 98
Show 10282+3819 LDS 915 AC 152 274.5 98
Show 10330+3523 HU 881 137 4.5 101
Show 10216+3754 LDS1237 4 7.2 104
Show 10301+3502 HDS1509 280 0.1 104
Show 10191+3620 ES 2566 219 4.0 108
Show 10289+3453 SHY 215 134 999.9 110
Show 10290+3452 A 2152 AB 57 0.4 112
Show 10290+3452 A 2152 AB,C 258 42.0 112
Show 10320+3824 SLW 486 291 10.3 113
Show 10185+3630 HJ 2525 68 13.7 115
Show 10186+3612 TDS7170 91 0.6 117
Show 10229+3823 CVR1286 216 4.7 117
Show 10218+3819 LDS3982 56 79.3 122
Show 10184+3730 HU 875 75 1.2 124
Show 10199+3808 UC 1915 69 65.2 129
Show 10351+3508 BU 1427 AB 212 30.1 129
Show 10351+3508 STF1449 AC 284 41.4 129
Show 10249+3849 COU1745 82 1.7 133
Show 10371+3759 COU1571 294 1.4 134
Show 10265+3418 TDS7272 307 0.9 146
Show 10242+3903 UC 1923 243 5.7 147
Show 10221+3427 CBL 307 70 28.4 153
Show 10403+3606 CBL 316 177 19.9 154
Show 10244+3411 STTA104 287 209.0 158
Show 10246+3410 ITF 23 91 5.4 158
Show 10218+3904 LDS3983 113 330.5 159
Show 10266+3401 LDS1242 171 2.5 162
Show 10165+3815 KPP3813 202 2.4 165
Show 10229+3410 HJL1059 123 127.5 165
Show 10376+3446 COU1417 212 0.3 167
Show 10334+3410 LDS 916 100 14.3 167
Show 10176+3449 KPP1519 291 11.4 170
Show 10188+3854 SLW 462 173 43.1 171
Show 10268+3351 TDS7275 119 0.7 172

 
 
WDS 10279+3642 : COMPONENTS
 
 
  A
B pa=220.0°
sep=0.46"
 
 
10279+3642 A
 
 
Componente originario normalizzato AB Name Bet LMi Coord arcsec 2000 102753.09+364226.9 Mag 4.62
Spectral class G8III (yellow) PmRA -118.00 PmDE -101.0 SAO 62053
HIP 51233 Tycho2 2517-01209-1 HD 90537 HR 4100
GC 14358 BD BD+37 2080 Bayer Beta Leonis Minoris Bayer name Bet LMi
Flamsteed 31 Leonis Minoris Flamsteed name 31 LMi FK5 390
Tycho2
Tycho2 2517-01209-1 Pflag RAmdeg 156.97085298 DEmdeg 36.70722132
PmRA -119.7 PmDE -105.3 E RAmdeg 3 E DEmdeg 3
E pmRA 0.7 E pmDE 0.8 EpRAm 1991.49 EpDEm 1991.55
Num 22 Q RAmdeg 1.3 Q DEmdeg 1.7 Q pmRA 1.4
Q pmDE 1.5 BTmag 5.354 E BTmag 0.014 VTmag 4.304
E VTmag 0.009 Prox 999 TYC T HIP 51233
CCDM AB RAdeg 156.97119250 DEdeg 36.70746111 EpRA 1990 1.80
EpDE 1990 1.80 E RAdeg 3.2 E DEdeg 3.4 Posflg P
Corr 0.2
SAO
SAO 62053 DelFlag RA1950 PmRA1950 -0.01
DE1950 PmDE1950 -0.105 Vmag 4.4 SpType K0
Double code Source 74 CatNum 390 DM BD+37 2080
DMcomp BDsup HD 90537 M HD 0
GC 14358 RA1950rad 2.7270688 DE1950rad 0.64514583 PmRA2000 -0.0099
PmDE2000 -0.1
Hipparcos
Catalog H HIP 51233 Proxy H RAhms 10 27 53.09
DEdms +36 42 26.9 Vmag 4.2 VarFlag R Vmag H
RAdeg 156.971 DEdeg 36.7075 AstroRef * Plx 22.34
CCDM 10279+3642 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 240 Rho 0.207 HD 90537 BD BD+37 2080
CD CP Dm number +37 2080 VIred 0.89
SpType G8III-IV R SpType Coord arcsec 2000 102753.09+364226.9
Hipparcos 2
HIP 51233 Sn 55 So 3 Nc 2
RArad 2.7396645982 DErad 0.6406663534 Plx 21.19 PmRA -127.68
PmDE -110.31 E RArad 0.4 E DErad 0.27 E Plx 0.5
E pmRA 0.49 E pmDE 0.27 Hpmag 4.3599 E Hpmag 0.0005
SHp 0.004 VA 0 BV 0.908 E BV 0.004
VI 0.89
CCDM
Ccdm 10279+3642 RComp Comp A Note1
Note2 Discov num DRAs -1.00 DDEs 26.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.5 Sp K0 PmNote *
PmRA -119 PmDE -105 Dm number +37 2080 Cat1 BD
Name2 +36 1001 Cat2 AGK2/3 HD 90537 M HD
ADS BDS A 7780 M ADS BDS N IDS IDS 10221N3713A
HIC 51233
 
 
10279+3642 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 102753.07+364226.5 Mag 6.04 Calc delta mag 1.42
Calc coord yes
CCDM
Ccdm 10279+3642 RComp Comp B Note1 *
Note2 Discov num HU 879 DRAs DDEs
R dRAs Year 1904 Theta Rho
Obs 99 Vmag 7.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7780 M ADS BDS N IDS IDS 10221N3713B
HIC 51233