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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ show covariance matrix ]

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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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