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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1087487420698168 3.4361e-08  
a 2.26375858139231 8.3135e-09 au
q 2.017577683316143 7.7133e-08 au
i 5.723793040533372 3.4844e-06 deg
node 106.8852795947154 3.8594e-05 deg
peri 107.3336004659278 4.1962e-05 deg
M 233.957263196588 1.7369e-05 deg
tp 2459636.070957967849
(2022-Feb-25.57095797)
6.1009e-05 TDB
period 1244.066487646917
3.41
6.8531e-06
1.876e-08
d
yr
n .2893736014711884 1.5941e-09 deg/d
Q 2.509939479468477 9.2176e-09 au
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      8331 days (22.81 yr)  
   first obs. used      1998-03-24  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:27  

Additional Information
 Earth MOID = 1.01833 au 
 Jupiter MOID = 2.46748 au 
 T_jup = 3.603 
[ 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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