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100889 (1998 HU117)
Classification: Main-belt Asteroid          SPK-ID: 2100889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .108932543515896 3.7829e-08  
a 2.263341364291286 8.7924e-09 au
q 2.016789832634298 8.3981e-08 au
i 5.723880821538251 3.5767e-06 deg
node 106.8844419457798 4.2486e-05 deg
peri 107.374372319188 4.6035e-05 deg
M 176.0341062029736 1.7932e-05 deg
tp 2458392.340022116437
(2018-Sep-30.84002212)
6.1151e-05 TDB
period 1243.722576042394
3.41
7.2472e-06
1.984e-08
d
yr
n .289453618463326 1.6867e-09 deg/d
Q 2.509892895948274 9.7502e-09 au
  Orbit Determination Parameters
   # obs. used (total)      684  
   data-arc span      7893 days (21.61 yr)  
   first obs. used      1998-03-24  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5871  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 09:34:01  

Additional Information
 Earth MOID = 1.01859 au 
 Jupiter MOID = 2.46869 au 
 T_jup = 3.604 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO337988  

100889 (1998 HU117)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 HU117 = 2000 YJ118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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