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120213 (2004 EF56)
Classification: Main-belt Asteroid          SPK-ID: 2120213
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1709013642943103 4.9912e-08  
a 2.311877177585917 1.0678e-08 au
q 1.916774213855605 1.1505e-07 au
i 3.74271431847228 4.6686e-06 deg
node 242.2277283633875 8.8066e-05 deg
peri 334.0350101346801 8.9206e-05 deg
M 253.5533668563289 1.7603e-05 deg
tp 2459580.142646449361
(2021-Dec-31.64264645)
6.4282e-05 TDB
period 1283.942466618973
3.52
8.8956e-06
2.435e-08
d
yr
n .2803863953094362 1.9426e-09 deg/d
Q 2.70698014131623 1.2503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      443  
   data-arc span      9196 days (25.18 yr)  
   first obs. used      1995-11-15  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58865  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:05:26  

Additional Information
 Earth MOID = .90935 au 
 Jupiter MOID = 2.26918 au 
 T_jup = 3.561 
[ 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 16.3   n/a MPO449699  

120213 (2004 EF56)          Discovered 2004-Mar-14 by NEAT at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 2004 EF56 = 2001 NR9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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