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JPL Small-Body Database Browser
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243557 (1993 HF4)
Classification: Main-belt Asteroid          SPK-ID: 2243557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128632243196882 4.9616e-08  
a 2.299091695050718 1.9056e-08 au
q 2.039608793340677 1.0867e-07 au
i 7.258945411266424 8.3308e-06 deg
node 49.45457641102943 4.5879e-05 deg
peri 237.7416656306389 6.3937e-05 deg
M 92.46953231164808 4.1435e-05 deg
tp 2458273.438799771757
(2018-Jun-03.93879977)
0.00014785 TDB
period 1273.306235456498
3.49
1.5831e-05
4.334e-08
d
yr
n .2827285298504291 3.5152e-09 deg/d
Q 2.558574596760759 2.1207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      207  
   data-arc span      9266 days (25.37 yr)  
   first obs. used      1993-03-25  
   last obs. used      2018-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58639  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:25:52  

Additional Information
 Earth MOID = 1.03357 au 
 Jupiter MOID = 2.5699 au 
 T_jup = 3.574 
[ 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 16.9   n/a MPO450092  

243557 (1993 HF4)          Discovered 1993-Apr-20 by Spacewatch at Kitt Peak
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

Alternate Designations
 1993 HF4 = 2007 JU2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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