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227890 (2007 EJ57)
Classification: Main-belt Asteroid          SPK-ID: 2227890
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566492636154382 8.5539e-08  
a 2.339154605346498 1.5367e-08 au
q 1.972727758936308 1.9872e-07 au
i 2.597783450579449 8.9418e-06 deg
node 151.8500299109811 0.00017035 deg
peri 279.689341699565 0.00017426 deg
M 15.58877611365974 3.1437e-05 deg
tp 2459143.915649304995
(2020-Oct-21.41564931)
0.00011402 TDB
period 1306.732876377142
3.58
1.2877e-05
3.526e-08
d
yr
n .2754962444949603 2.7148e-09 deg/d
Q 2.705581451756688 1.7774e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      8177 days (22.39 yr)  
   first obs. used      1998-08-30  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67308  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:12:24  

Additional Information
 Earth MOID = .98878 au 
 Jupiter MOID = 2.55944 au 
 T_jup = 3.548 
[ 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 17.7   n/a MPO440188  

227890 (2007 EJ57)          Discovered 2007-Mar-09 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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