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312539 (2009 ES20)
Classification: Main-belt Asteroid          SPK-ID: 2312539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263679354579511 4.4414e-08  
a 2.287800168733077 1.3759e-08 au
q 1.998695584669926 1.0212e-07 au
i 3.189274700425678 6.1238e-06 deg
node 2.448199298928376 8.7165e-05 deg
peri 110.9026468599359 9.0588e-05 deg
M 25.37199116624362 2.3875e-05 deg
tp 2458511.420533133503
(2019-Jan-27.92053313)
8.3653e-05 TDB
period 1263.937381257048
3.46
1.1402e-05
3.122e-08
d
yr
n .284824236816196 2.5694e-09 deg/d
Q 2.576904752796228 1.5498e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      8745 days (23.94 yr)  
   first obs. used      1995-01-29  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5248  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:02:51  

Additional Information
 Earth MOID = 1.01805 au 
 Jupiter MOID = 2.5079 au 
 T_jup = 3.588 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457226.5 (2015-Jul-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263868835744439 4.4507e-08  
q 1.998692896263021 1.0237e-07 au
tp 2457248.488046045017
(2015-Aug-13.98804604)
8.1886e-05 TDB
node 2.460453672886134 8.7149e-05 deg
peri 111.2388935501902 9.0557e-05 deg
i 3.190056670519552 6.1235e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      8745 days (23.94 yr)  
   first obs. used      1995-01-29  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5248  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:02:51  

Additional Information
 Jupiter MOID = 2.5079 au 
 T_jup = 3.588 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.980888749698627E-15 -4.525015618308517E-15 4.205123737558753E-13 9.526375593114283E-15 8.39493328147398E-14 -4.043894329422292E-15
q -4.525015618308517E-15 1.048034191881824E-14 -9.025339953664906E-13 -2.139718525755124E-14 -1.758394628446705E-13 9.464222669348603E-15
tp 4.205123737558753E-13 -9.025339953664906E-13 6.70532046917484E-9 1.771772839371426E-11 2.029197382829244E-9 1.266539134952146E-12
node 9.526375593114283E-15 -2.139718525755124E-14 1.771772839371426E-11 7.594992757542812E-9 -7.577674254611088E-9 -2.489819699157122E-11
peri 8.39493328147398E-14 -1.758394628446705E-13 2.029197382829244E-9 -7.577674254611088E-9 8.200594298101902E-9 2.539657822438476E-11
i -4.043894329422292E-15 9.464222669348603E-15 1.266539134952146E-12 -2.489819699157122E-11 2.539657822438476E-11 3.749765641152012E-11

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 17.8   n/a MPO418615  

312539 (2009 ES20)          Discovered 2009-Mar-15 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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