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85020 (2057 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2085020
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1631818709489212 4.9705e-08  
a 2.316955005768664 1.0365e-08 au
q 1.938869953022865 1.16e-07 au
i 4.710219946469125 5.2131e-06 deg
node 330.4548814731471 6.6294e-05 deg
peri 45.05049653890101 6.829e-05 deg
M 326.6004078650971 1.795e-05 deg
tp 2459120.012543584463
(2020-Sep-27.51254358)
6.4605e-05 TDB
period 1288.174882993419
3.53
8.644e-06
2.367e-08
d
yr
n .2794651601678831 1.8753e-09 deg/d
Q 2.695040058514463 1.2056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      423  
   data-arc span      21861 days (59.85 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:54:20  

Additional Information
 Earth MOID = .942903 au 
 Jupiter MOID = 2.78474 au 
 T_jup = 3.558 
[ show covariance matrix ]

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 MPO267961  

85020 (2057 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 2057 P-L = 2004 BM97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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