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227871 (2007 EK8)
Classification: Main-belt Asteroid          SPK-ID: 2227871
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01923498567334645 1.0609e-07  
a 2.537261274235098 2.3136e-08 au
q 2.488457089975649 2.6041e-07 au
i 3.236536254179752 9.7178e-06 deg
node 178.9570850823293 0.00011854 deg
peri 131.1876508969149 0.0008356 deg
M 14.88392396190356 0.00084824 deg
tp 2459139.467500646671
(2020-Oct-16.96750065)
0.0034779 TDB
period 1476.203440936453
4.04
2.0191e-05
5.528e-08
d
yr
n .2438688259469362 3.3355e-09 deg/d
Q 2.586065458494547 2.3581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      202  
   data-arc span      8772 days (24.02 yr)  
   first obs. used      1995-04-05  
   last obs. used      2019-04-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57974  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:29  

Additional Information
 Earth MOID = 1.4734 au 
 Jupiter MOID = 2.43492 au 
 T_jup = 3.445 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   n/a MPO281223  

227871 (2007 EK8)          Discovered 2007-Mar-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2007 EK8 = 2001 XC142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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