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120411 (2857 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2120411
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .241478530725836 7.173e-08  
a 2.543750212340872 1.1895e-08 au
q 1.929489148531265 1.8601e-07 au
i 5.477188426463835 4.2363e-06 deg
node 172.1685112246899 6.785e-05 deg
peri 91.42518693788568 6.8485e-05 deg
M 343.0627345705149 9.7355e-06 deg
tp 2459070.218962213491
(2020-Aug-08.71896221)
4.0215e-05 TDB
period 1481.870051653307
4.06
1.0394e-05
2.846e-08
d
yr
n .2429362814899672 1.704e-09 deg/d
Q 3.158011276150479 1.4767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      927  
   data-arc span      21898 days (59.95 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:57:21  

Additional Information
 Earth MOID = .923522 au 
 Jupiter MOID = 1.95685 au 
 T_jup = 3.396 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457688.5 (2016-Oct-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2408721998023881 7.1807e-08  
q 1.931337575790541 1.8617e-07 au
tp 2457587.239974549045
(2016-Jul-17.73997455)
3.8523e-05 TDB
node 172.1910101084758 6.7845e-05 deg
peri 91.25605173374092 6.848e-05 deg
i 5.476737658725664 4.2369e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      927  
   data-arc span      21898 days (59.95 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:57:21  

Additional Information
 Jupiter MOID = 1.95685 au 
 T_jup = 3.396 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.156308003065532E-15 -1.33545802161538E-14 -1.764828758589193E-12 2.576518733009701E-14 -4.110593006546129E-13 -2.31783815251602E-14
q -1.33545802161538E-14 3.465833859792372E-14 4.50165111504316E-12 -6.793480531364243E-14 1.049891652067993E-12 6.017258292935886E-14
tp -1.764828758589193E-12 4.50165111504316E-12 1.4840556056727E-9 -7.043192323077938E-12 4.160609610500776E-10 9.673141808857928E-12
node 2.576518733009701E-14 -6.793480531364243E-14 -7.043192323077938E-12 4.602925411824801E-9 -4.583928338196805E-9 1.828544700813791E-10
peri -4.110593006546129E-13 1.049891652067993E-12 4.160609610500776E-10 -4.583928338196805E-9 4.689458376906153E-9 -1.797941988850016E-10
i -2.31783815251602E-14 6.017258292935886E-14 9.673141808857928E-12 1.828544700813791E-10 -1.797941988850016E-10 1.795156019928041E-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 15.4   n/a MPO436581  

120411 (2857 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2857 P-L = 2001 XT202 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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