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91134 (1998 HC154)
Classification: Main-belt Asteroid          SPK-ID: 2091134
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1481369230809326 5.0516e-08  
a 2.746046547067905 1.4332e-08 au
q 2.339255660948246 1.4235e-07 au
i 13.63701493345648 4.3927e-06 deg
node 88.07752191027507 1.9133e-05 deg
peri 104.3021696586842 2.516e-05 deg
M 331.7471765102338 1.4915e-05 deg
tp 2459130.942653294570
(2020-Oct-08.44265329)
6.9106e-05 TDB
period 1662.111937345127
4.55
1.3012e-05
3.562e-08
d
yr
n .2165919105153797 1.6956e-09 deg/d
Q 3.152837433187563 1.6455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1096  
   data-arc span      8039 days (22.01 yr)  
   first obs. used      1998-04-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50034  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:37:58  

Additional Information
 Earth MOID = 1.38124 au 
 Jupiter MOID = 1.96832 au 
 T_jup = 3.291 
[ 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 14.4   n/a MPO417448  

91134 (1998 HC154)          Discovered 1998-Apr-29 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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