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266522 (2008 EJ166)
Classification: Main-belt Asteroid          SPK-ID: 2266522
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454437575522342 4.3419e-08  
a 2.273852795726531 1.4149e-08 au
q 1.943135100995411 9.4056e-08 au
i 6.92792694940059 5.7257e-06 deg
node 171.3994041925789 4.1441e-05 deg
peri 137.4638420340827 5.058e-05 deg
M 112.4358847040053 2.6869e-05 deg
tp 2458609.349052514477
(2019-May-05.84905251)
9.2429e-05 TDB
period 1252.396790095004
3.43
1.169e-05
3.201e-08
d
yr
n .2874488363809135 2.683e-09 deg/d
Q 2.604570490457651 1.6207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      6317 days (17.30 yr)  
   first obs. used      2002-10-11  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:47:55  

Additional Information
 Earth MOID = .935543 au 
 Jupiter MOID = 2.65684 au 
 T_jup = 3.587 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457608.5 (2016-Aug-08.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459125522921522 4.3485e-08  
q 1.941919264056349 9.4314e-08 au
tp 2457357.804129145816
(2015-Dec-01.30412915)
8.9832e-05 TDB
node 171.4354027604305 4.1417e-05 deg
peri 137.6096089694134 5.0524e-05 deg
i 6.930201168984039 5.7286e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      6317 days (17.30 yr)  
   first obs. used      2002-10-11  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:47:55  

Additional Information
 Jupiter MOID = 2.65684 au 
 T_jup = 3.587 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.890959210325104E-15 -4.073884284114617E-15 1.340503976920492E-12 1.227606112426593E-14 4.360386914859938E-13 6.410337978309386E-17
q -4.073884284114617E-15 8.895189667344306E-15 -2.90430643401109E-12 -2.684474064468608E-14 -9.413089377840686E-13 2.747242180681587E-16
tp 1.340503976920492E-12 -2.90430643401109E-12 8.069722451929853E-9 1.853983411021313E-11 2.62198173497142E-9 1.19694348997649E-11
node 1.227606112426593E-14 -2.684474064468608E-14 1.853983411021313E-11 1.715378651120476E-9 -1.695156359717822E-9 8.330677813691079E-11
peri 4.360386914859938E-13 -9.413089377840686E-13 2.62198173497142E-9 -1.695156359717822E-9 2.55264054739014E-9 -7.881126835592243E-11
i 6.410337978309386E-17 2.747242180681587E-16 1.19694348997649E-11 8.330677813691079E-11 -7.881126835592243E-11 3.281724521682784E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO437227  

266522 (2008 EJ166)          Discovered 2008-Mar-05 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2008 EJ166 = 2005 NE3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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