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100888 (1998 HH117)
Classification: Main-belt Asteroid          SPK-ID: 2100888
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1026442884880073 3.479e-08  
a 2.358001281444252 1.4188e-08 au
q 2.115965917656597 8.2086e-08 au
i 7.83255941086488 4.3557e-06 deg
node 71.60727910366477 3.8582e-05 deg
peri 201.6451186038037 4.9178e-05 deg
M 348.7363388874685 3.2432e-05 deg
tp 2459041.880101988853
(2020-Jul-11.38010199)
0.00011924 TDB
period 1322.557254444874
3.62
1.1937e-05
3.268e-08
d
yr
n .2721999359877281 2.4568e-09 deg/d
Q 2.600036645231907 1.5645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      9930 days (27.19 yr)  
   first obs. used      1992-11-19  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58773  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:12:53  

Additional Information
 Earth MOID = 1.10194 au 
 Jupiter MOID = 2.47532 au 
 T_jup = 3.533 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457408.5 (2016-Jan-21.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1021144234616046 3.4881e-08  
q 2.117611945017863 8.2253e-08 au
tp 2457718.273507408984
(2016-Nov-25.77350741)
0.00011714 TDB
node 71.62635681567595 3.8588e-05 deg
peri 201.2601966721234 4.9238e-05 deg
i 7.831594190378322 4.3552e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      9930 days (27.19 yr)  
   first obs. used      1992-11-19  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58773  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:12:53  

Additional Information
 Jupiter MOID = 2.47532 au 
 T_jup = 3.533 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.216689248474593E-15 -2.833760629183864E-15 -7.390410023756844E-13 -1.301902160740066E-14 -1.837268589700759E-13 7.336804941480239E-16
q -2.833760629183864E-15 6.765528384551923E-15 1.999775965050646E-12 3.074726994660899E-14 4.889754020299274E-13 -1.531042336739698E-15
tp -7.390410023756844E-13 1.999775965050646E-12 1.372218389424444E-8 -6.618775951846165E-12 3.615066800728666E-9 -3.359640908360458E-12
node -1.301902160740066E-14 3.074726994660899E-14 -6.618775951846165E-12 1.489029724481078E-9 -1.476410645704973E-9 -5.24669760336994E-11
peri -1.837268589700759E-13 4.889754020299274E-13 3.615066800728666E-9 -1.476410645704973E-9 2.424337727468617E-9 5.115744837985615E-11
i 7.336804941480239E-16 -1.531042336739698E-15 -3.359640908360458E-12 -5.24669760336994E-11 5.115744837985615E-11 1.896737231590787E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO366383  

100888 (1998 HH117)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 HH117 = 2002 LS44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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