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136898 (1998 HM43)
Classification: Main-belt Asteroid          SPK-ID: 2136898
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .122841901196287 5.1636e-08  
a 3.01907004806697 2.385e-08 au
q 2.648201743517657 1.4864e-07 au
i 10.52104481664435 4.8564e-06 deg
node 180.6542927110037 2.4661e-05 deg
peri 337.59011109 3.0856e-05 deg
M 117.6954801113332 2.0161e-05 deg
tp 2458374.080172896104
(2018-Sep-12.58017290)
0.0001049 TDB
period 1916.056058772028
5.25
2.2704e-05
6.216e-08
d
yr
n .187885943290573 2.2263e-09 deg/d
Q 3.389938352616282 2.6779e-08 au
  Orbit Determination Parameters
   # obs. used (total)      599  
   data-arc span      8117 days (22.22 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56194  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:31:32  

Additional Information
 Earth MOID = 1.65981 au 
 Jupiter MOID = 1.60385 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457076.5 (2015-Feb-23.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1224189215011868 5.1514e-08  
q 2.645835813281932 1.4815e-07 au
tp 2456455.755022829994
(2013-Jun-12.25502283)
0.00010082 TDB
node 180.8323661662365 2.4664e-05 deg
peri 336.17955254485 3.0982e-05 deg
i 10.52353845001327 4.858e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      599  
   data-arc span      8117 days (22.22 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56194  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:31:32  

Additional Information
 Jupiter MOID = 1.60385 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.65372413663329E-15 -7.568422947726778E-15 6.740305093675744E-13 1.432815073630098E-14 3.982028355707877E-14 -4.700262409558673E-16
q -7.568422947726778E-15 2.194702367156239E-14 -1.762038245489957E-12 -4.404809014196355E-14 -5.773095894986655E-14 2.141414158700201E-15
tp 6.740305093675744E-13 -1.762038245489957E-12 1.01645565952287E-8 3.669801441231173E-11 1.903449914259712E-9 -6.721229066870912E-12
node 1.432815073630098E-14 -4.404809014196355E-14 3.669801441231173E-11 6.083041345934994E-10 -5.916054319277965E-10 2.593646317501816E-13
peri 3.982028355707877E-14 -5.773095894986655E-14 1.903449914259712E-9 -5.916054319277965E-10 9.59890049210224E-10 -1.403061340843698E-12
i -4.700262409558673E-16 2.141414158700201E-15 -6.721229066870912E-12 2.593646317501816E-13 -1.403061340843698E-12 2.359977224599301E-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 15.0   n/a MPO432830  

136898 (1998 HM43)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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