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JPL Small-Body Database Browser
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(2020 HN9)
Classification: Apollo [NEO]          SPK-ID: 54016915
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 2458962.5 (2020-Apr-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5889653422053163 0.0037666  
a 2.282325751147486 0.02019 au
q .9381149840989014 0.00029775 au
i 6.160372654895869 0.024972 deg
node 57.5901858517914 0.024653 deg
peri 203.4414698662402 0.010636 deg
M 349.0622944402173 0.15534 deg
tp 2459000.763844218941
(2020-May-31.26384422)
0.035687 TDB
period 1259.403431874102
3.45
16.712
0.04575
d
yr
n .2858496260124435 0.0037931 deg/d
Q 3.62653651819607 0.032082 au
  Orbit Determination Parameters
   # obs. used (total)      17  
   data-arc span      9 days  
   first obs. used      2020-04-21  
   last obs. used      2020-04-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      9  
   norm. resid. RMS      .49896  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:25:47  

Additional Information
 Earth MOID = .0211345 au 
 Jupiter MOID = 1.48395 au 
 T_jup = 3.344 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.418745377613265E-5 -1.121490694949264E-6 -.0001344174481463619 9.282991914101834E-5 -3.988210122318278E-5 9.405930497390477E-5
q -1.121490694949264E-6 8.865589274836783E-8 1.062489905233915E-5 -7.336806911744014E-6 3.150553236837872E-6 -7.435493028244148E-6
tp -.0001344174481463619 1.062489905233915E-5 .001273592223181961 -.000879660867055219 .0003781190625039343 -.0008911178401272153
node 9.282991914101834E-5 -7.336806911744014E-6 -.000879660867055219 .0006077725268638438 -.0002615675703366838 .0006153509190872325
peri -3.988210122318278E-5 3.150553236837872E-6 .0003781190625039343 -.0002615675703366838 .0001131286102694959 -.0002642636626229678
i 9.405930497390477E-5 -7.435493028244148E-6 -.0008911178401272153 .0006153509190872325 -.0002642636626229678 .0006236107866966181

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 25.2   .34807 MPO545526 autocmod 2.8

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