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(2021 HQ1)
Classification: Amor [NEO]          SPK-ID: 54139081
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501817374852009 9.7564e-05  
a 1.234174432923102 0.0001661 au
q 1.048823972226898 2.0746e-05 au
i 7.988572708112516 0.003944 deg
node 33.76222389630799 0.00049763 deg
peri 190.1745597522413 0.0029264 deg
M 259.8824657157429 0.018237 deg
tp 2459339.774269520798
(2021-May-05.27426952)
0.002804 TDB
period 500.7987600366939
1.37
0.1011
0.0002768
d
yr
n .7188516201070916 0.00014512 deg/d
Q 1.419524893619306 0.00019104 au
  Orbit Determination Parameters
   # obs. used (total)      23  
   data-arc span      18 days  
   first obs. used      2021-04-17  
   last obs. used      2021-05-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .66299  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-07 05:55:24  

Additional Information
 Earth MOID = .0428302 au 
 Jupiter MOID = 3.55083 au 
 T_jup = 5.170 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.36   .32373 E2021-HA9 autocmod 2.9c

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