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541287 (2011 EQ81)
Classification: Main-belt Asteroid          SPK-ID: 2541287
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 .09114025902423166 5.6212e-08  
a 3.104722996644244 4.5876e-08 au
q 2.821757738531599 1.5744e-07 au
i 10.80003860374788 6.0531e-06 deg
node 162.1076725704546 3.3776e-05 deg
peri 114.485971416169 5.1404e-05 deg
M 185.1147569492351 3.9233e-05 deg
tp 2460171.196310145231
(2023-Aug-14.69631015)
0.00021895 TDB
period 1998.171289677347
5.47
4.4288e-05
1.213e-07
d
yr
n .1801647345549293 3.9932e-09 deg/d
Q 3.387688254756889 5.0057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      7236 days (19.81 yr)  
   first obs. used      2000-02-05  
   last obs. used      2019-11-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:22:45  

Additional Information
 Earth MOID = 1.82545 au 
 Jupiter MOID = 1.82402 au 
 T_jup = 3.187 
[ 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 16.1   n/a E2018O06  

541287 (2011 EQ81)          Discovered 2008-Sep-24 by Mount Lemmon Survey at Mount Lemmon
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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