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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128883141380978 4.9433e-08  
a 2.299294602828296 1.8557e-08 au
q 2.039731111408182 1.0851e-07 au
i 7.257908771339767 8.1598e-06 deg
node 49.44868977768316 4.5071e-05 deg
peri 237.8680154975316 6.1521e-05 deg
M 205.405493846394 3.9085e-05 deg
tp 2459547.367245549662
(2021-Nov-28.86724555)
0.00013696 TDB
period 1273.474803834653
3.49
1.5417e-05
4.221e-08
d
yr
n .2826911054038744 3.4224e-09 deg/d
Q 2.558858094248409 2.0652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      214  
   data-arc span      9763 days (26.73 yr)  
   first obs. used      1993-03-25  
   last obs. used      2019-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57575  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:55:45  

Additional Information
 Earth MOID = 1.03429 au 
 Jupiter MOID = 2.57045 au 
 T_jup = 3.573 
[ 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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