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442186 (2011 EP45)
Classification: Main-belt Asteroid          SPK-ID: 2442186
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300485035680779 7.7408e-08  
a 2.203416653048175 5.6019e-08 au
q 1.916865614582277 1.8216e-07 au
i 8.006995178577384 1.2359e-05 deg
node 161.1046301753558 5.2681e-05 deg
peri 68.26170102621496 9.804e-05 deg
M 255.0022771448575 0.0001054 deg
tp 2459348.934177317159
(2021-May-14.43417732)
0.00036184 TDB
period 1194.657373734023
3.27
4.5559e-05
1.247e-07
d
yr
n .301341629755135 1.1492e-08 deg/d
Q 2.489967691514073 6.3304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      4283 days (11.73 yr)  
   first obs. used      2008-04-30  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57254  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:40:28  

Additional Information
 Earth MOID = .924755 au 
 Jupiter MOID = 2.51207 au 
 T_jup = 3.639 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456679.5 (2014-Jan-22.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300279034368286 7.753e-08  
q 1.917085222686854 1.8252e-07 au
tp 2456959.787074767933
(2014-Oct-29.28707477)
0.00028155 TDB
node 161.1400580920946 5.2673e-05 deg
peri 68.1714312273124 9.8043e-05 deg
i 8.007076218120703 1.236e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      4283 days (11.73 yr)  
   first obs. used      2008-04-30  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57254  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:40:28  

Additional Information
 Jupiter MOID = 2.51207 au 
 T_jup = 3.639 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.010873502878174E-15 -1.364006217758034E-14 -7.227669023708119E-12 6.137663143868662E-14 -2.227820417147769E-12 -8.301604524921083E-15
q -1.364006217758034E-14 3.331366775669469E-14 2.760800793071536E-11 -1.769620322604098E-13 8.239628563507527E-12 2.834958647762025E-14
tp -7.227669023708119E-12 2.760800793071536E-11 7.926914122923979E-8 -2.77358829115349E-10 2.328596488513432E-8 4.936515137354218E-11
node 6.137663143868662E-14 -1.769620322604098E-13 -2.77358829115349E-10 2.774496873889838E-9 -2.825898292202687E-9 1.314029993166426E-11
peri -2.227820417147769E-12 8.239628563507527E-12 2.328596488513432E-8 -2.825898292202687E-9 9.612483382094991E-9 9.100891821308532E-13
i -8.301604524921083E-15 2.834958647762025E-14 4.936515137354218E-11 1.314029993166426E-11 9.100891821308532E-13 1.527656080212887E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.4   n/a MPO349187  

442186 (2011 EP45)          Discovered 2008-Apr-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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