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27943 (1997 LB12)
Classification: Main-belt Asteroid          SPK-ID: 2027943
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07624033494950685 3.7815e-08  
a 2.323277988634693 8.8753e-09 au
q 2.146150496600367 8.7471e-08 au
i 2.820810824492289 5.3964e-06 deg
node 149.7758974172986 0.00011144 deg
peri 155.0492865872795 0.00011958 deg
M 121.7128668293625 4.3332e-05 deg
tp 2458563.195259978215
(2019-Mar-20.69525998)
0.00015577 TDB
period 1293.451633413204
3.54
7.4118e-06
2.029e-08
d
yr
n .2783250573119769 1.5949e-09 deg/d
Q 2.500405480669019 9.5519e-09 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      9301 days (25.46 yr)  
   first obs. used      1994-08-10  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59201  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:25  

Additional Information
 Earth MOID = 1.13143 au 
 Jupiter MOID = 2.64189 au 
 T_jup = 3.571 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456977.5 (2014-Nov-16.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07673159791402961 3.8021e-08  
q 2.144540894404113 8.8064e-08 au
tp 2457271.462845554330
(2015-Sep-05.96284555)
0.00015516 TDB
node 149.8188999868274 0.00011146 deg
peri 155.4766104137391 0.00011948 deg
i 2.820934417353719 5.3989e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      9301 days (25.46 yr)  
   first obs. used      1994-08-10  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59201  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:25  

Additional Information
 Jupiter MOID = 2.64189 au 
 T_jup = 3.571 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.445617540543361E-15 -3.333766387065276E-15 2.625459273232012E-12 5.505414026806274E-15 7.223988203184827E-13 -6.560351867353294E-16
q -3.333766387065276E-15 7.755203641226209E-15 -6.228420785336145E-12 -1.258649794468972E-14 -1.721625763348727E-12 1.667017457235339E-15
tp 2.625459273232012E-12 -6.228420785336145E-12 2.407571425493415E-8 6.504531251912721E-11 6.718154526796768E-9 -8.932874868497997E-13
node 5.505414026806274E-15 -1.258649794468972E-14 6.504531251912721E-11 1.242232166675457E-8 -1.238808065445249E-8 3.375894452290545E-10
peri 7.223988203184827E-13 -1.721625763348727E-12 6.718154526796768E-9 -1.238808065445249E-8 1.427641869369425E-8 -3.374504397720607E-10
i -6.560351867353294E-16 1.667017457235339E-15 -8.932874868497997E-13 3.375894452290545E-10 -3.374504397720607E-10 2.914799975226699E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO502367  

27943 (1997 LB12)          Discovered 1997-Jun-07 by Elst, E. W. at La Silla
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 LB12 = 1994 PL38 = 2000 ET188 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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