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150657 (2001 EJ21)
Classification: Main-belt Asteroid          SPK-ID: 2150657
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07641258020206504 5.2417e-08  
a 2.230492482790426 8.729e-09 au
q 2.060054797059099 1.1646e-07 au
i 3.71754520330645 3.5351e-06 deg
node 252.9662428482417 8.7141e-05 deg
peri 249.8434991501958 9.1904e-05 deg
M 354.4257072296123 2.8843e-05 deg
tp 2459219.340258043771
(2021-Jan-04.84025804)
9.7481e-05 TDB
period 1216.745006969903
3.33
7.1426e-06
1.956e-08
d
yr
n .2958713600120035 1.7368e-09 deg/d
Q 2.400930168521752 9.396e-09 au
  Orbit Determination Parameters
   # obs. used (total)      525  
   data-arc span      8389 days (22.97 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:39:39  

Additional Information
 Earth MOID = 1.076 au 
 Jupiter MOID = 2.60858 au 
 T_jup = 3.636 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458064.5 (2017-Nov-07.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07568121056442535 5.2638e-08  
q 2.061462913264081 1.1689e-07 au
tp 2458003.918208952144
(2017-Sep-07.41820895)
9.8679e-05 TDB
node 252.980486060467 8.7187e-05 deg
peri 250.2148850998278 9.2009e-05 deg
i 3.716201111543295 3.5354e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      525  
   data-arc span      8389 days (22.97 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:39:39  

Additional Information
 Jupiter MOID = 2.60858 au 
 T_jup = 3.636 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.770749733964574E-15 -6.138410250882669E-15 2.629274908323705E-12 2.702057999599326E-14 8.257817237805216E-13 -1.397622696551754E-15
q -6.138410250882669E-15 1.366391544258858E-14 -5.950122246649206E-12 -5.906791677173417E-14 -1.86790886564773E-12 3.198205034126692E-15
tp 2.629274908323705E-12 -5.950122246649206E-12 9.737580013145008E-9 4.633455698464285E-11 2.938723225343944E-9 -1.850481745728141E-12
node 2.702057999599326E-14 -5.906791677173417E-14 4.633455698464285E-11 7.601487313309056E-9 -7.570931560742774E-9 -6.739540175665317E-11
peri 8.257817237805216E-13 -1.86790886564773E-12 2.938723225343944E-9 -7.570931560742774E-9 8.465669513164262E-9 6.666613907514484E-11
i -1.397622696551754E-15 3.198205034126692E-15 -1.850481745728141E-12 -6.739540175665317E-11 6.666613907514484E-11 1.249903719427976E-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 16.65   n/a MPCxxxxx  

150657 (2001 EJ21)          Discovered 2001-Mar-15 by LONEOS at Anderson Mesa
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

Alternate Designations
 2001 EJ21 = 2002 PU20 = 2003 YG98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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