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541955 (2012 EA20)
Classification: Main-belt Asteroid          SPK-ID: 2541955
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1562250388819332 9.0029e-08  
a 2.796209484570719 7.6881e-08 au
q 2.359371549121628 2.245e-07 au
i 14.60639693240068 9.5411e-06 deg
node 64.46881396485368 3.6563e-05 deg
peri 193.0859656502749 5.0953e-05 deg
M 244.6440223143655 3.4481e-05 deg
tp 2459747.756069798940
(2022-Jun-17.25606980)
0.00016442 TDB
period 1707.862818037151
4.68
7.0436e-05
1.928e-07
d
yr
n .2107897637901318 8.6934e-09 deg/d
Q 3.23304742001981 8.8892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      5112 days (14.00 yr)  
   first obs. used      2005-12-04  
   last obs. used      2019-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .67568  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:24:59  

Additional Information
 Earth MOID = 1.34533 au 
 Jupiter MOID = 1.82192 au 
 T_jup = 3.262 
[ 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   .37436 MPO451336 autocmod 2.6n

541955 (2012 EA20)          Discovered 2012-Mar-14 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2019-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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