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(2001 HL31)
Classification: Apollo [NEO, PHA]          SPK-ID: 3076784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2452031.5 (2001-May-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .778728816205939 0.0078383  
a 2.436045069717438 0.076598 au
q .5390265763520632 0.0021455 au
i 12.85937082268816 0.15061 deg
node 38.364214253 0.033564 deg
peri 286.8561696305793 0.088372 deg
M 345.7461672686688 0.74048 deg
tp 2452086.486434895406
(2001-Jun-25.98643490)
0.26305 TDB
period 1388.757461621864
3.80
65.501
0.1793
d
yr
n .2592245298034784 0.012226 deg/d
Q 4.333063563082812 0.13625 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   data-arc span      9 days  
   first obs. used      2001-04-29  
   last obs. used      2001-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      9  
   norm. resid. RMS      .33284  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:16:22  

Additional Information
 Earth MOID = .049671 au 
 Jupiter MOID = 1.40494 au 
 T_jup = 2.973 
[ 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 20.3   n/a MPO13855  

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