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100881 (1998 HK98)
Classification: Main-belt Asteroid          SPK-ID: 2100881
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2093447388854263 3.5862e-08  
a 2.323143268850515 8.8842e-09 au
q 1.836805447839568 8.1773e-08 au
i 5.237755410333873 5.353e-06 deg
node 16.35743056256426 4.8789e-05 deg
peri 236.0943556311693 5.0827e-05 deg
M 119.9356863312055 1.5574e-05 deg
tp 2458769.618010482897
(2019-Oct-13.11801048)
5.4594e-05 TDB
period 1293.339130088406
3.54
7.419e-06
2.031e-08
d
yr
n .2783492678949506 1.5967e-09 deg/d
Q 2.809481089861462 1.0744e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      9245 days (25.31 yr)  
   first obs. used      1995-08-29  
   last obs. used      2020-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:26  

Additional Information
 Earth MOID = .827433 au 
 Jupiter MOID = 2.2522 au 
 T_jup = 3.541 
[ 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 16.5   n/a MPO474883  

100881 (1998 HK98)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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