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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1479012411464095 4.6449e-08  
a 2.745579197958406 1.3567e-08 au
q 2.339504626914594 1.2985e-07 au
i 13.63667411614414 4.3508e-06 deg
node 88.07496393934431 1.8672e-05 deg
peri 104.3689247122005 2.48e-05 deg
M 57.4869355796333 1.4988e-05 deg
tp 2459131.151859654879
(2020-Oct-08.65185966)
6.8708e-05 TDB
period 1661.687643654579
4.55
1.2316e-05
3.372e-08
d
yr
n .2166472148810385 1.6058e-09 deg/d
Q 3.151653769002218 1.5573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1173  
   data-arc span      8496 days (23.26 yr)  
   first obs. used      1998-04-24  
   last obs. used      2021-07-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49762  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:17:09  

Additional Information
 Earth MOID = 1.38209 au 
 Jupiter MOID = 1.9671 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 14.51   n/a MPO637239  

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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