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146440 (2001 QH284)
Classification: Main-belt Asteroid          SPK-ID: 2146440
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 .0864192179995406 4.8232e-08  
a 2.655920814582124 1.5964e-08 au
q 2.426398214717234 1.2961e-07 au
i 1.842622583736151 5.39e-06 deg
node 182.8076687701336 0.00011735 deg
peri 145.7249687899424 0.00011995 deg
M 180.6055551594382 2.5699e-05 deg
tp 2459988.321085795671
(2023-Feb-12.82108580)
0.00011587 TDB
period 1580.960832641765
4.33
1.4254e-05
3.903e-08
d
yr
n .2277096260496503 2.0531e-09 deg/d
Q 2.885443414447014 1.7344e-08 au
  Orbit Determination Parameters
   # obs. used (total)      406  
   data-arc span      7173 days (19.64 yr)  
   first obs. used      2001-08-18  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54812  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:34:45  

Additional Information
 Earth MOID = 1.41337 au 
 Jupiter MOID = 2.37421 au 
 T_jup = 3.382 
[ 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 16.32   n/a MPCxxxxx  

146440 (2001 QH284)          Discovered 2001-Aug-18 by NEAT at Palomar
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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