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227914 (2007 ET208)
Classification: Main-belt Asteroid          SPK-ID: 2227914
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0352241161834508 1.0426e-07  
a 2.603385525460185 2.7162e-08 au
q 2.511683571241061 2.7843e-07 au
i 10.4268665816128 6.1546e-06 deg
node 52.45044345612707 3.5053e-05 deg
peri 178.8432456616736 0.00023882 deg
M 64.18962144988885 0.00024523 deg
tp 2458926.930000627213
(2020-Mar-18.43000063)
0.0010442 TDB
period 1534.285411717032
4.20
2.4012e-05
6.574e-08
d
yr
n .234636917779933 3.6721e-09 deg/d
Q 2.695087479679308 2.8119e-08 au
  Orbit Determination Parameters
   # obs. used (total)      189  
   data-arc span      8152 days (22.32 yr)  
   first obs. used      1996-10-11  
   last obs. used      2019-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:39  

Additional Information
 Earth MOID = 1.49935 au 
 Jupiter MOID = 2.28195 au 
 T_jup = 3.389 
[ 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 16.7   n/a MPO427318  

227914 (2007 ET208)          Discovered 2007-Mar-14 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2007 ET208 = 1996 TW35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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