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138439 (2000 HD98)
Classification: Main-belt Asteroid          SPK-ID: 2138439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09761681420214957 5.0191e-08  
a 2.626972426747882 1.4492e-08 au
q 2.370535747451864 1.2602e-07 au
i 13.42777553753009 4.7917e-06 deg
node 200.1749002847064 1.6549e-05 deg
peri 205.3629146704796 2.6529e-05 deg
M 110.6347424320396 2.0076e-05 deg
tp 2458722.562919035025
(2019-Aug-27.06291904)
8.6383e-05 TDB
period 1555.183709611669
4.26
1.2869e-05
3.523e-08
d
yr
n .2314839062260318 1.9155e-09 deg/d
Q 2.8834091060439 1.5907e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      9103 days (24.92 yr)  
   first obs. used      1996-05-15  
   last obs. used      2021-04-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4779  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:25:22  

Additional Information
 Earth MOID = 1.38298 au 
 Jupiter MOID = 2.54834 au 
 T_jup = 3.356 
[ 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 15.94   n/a E2021B55  

138439 (2000 HD98)          Discovered 2000-Apr-26 by Ondrejov at Ondrejov
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 2000 HD98 = 1996 JG16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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