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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1632047416036974 4.9246e-08  
a 2.317125460088566 7.572e-09 au
q 1.938959598111463 1.1504e-07 au
i 4.710366459092551 4.1276e-06 deg
node 330.4540515303412 5.4597e-05 deg
peri 45.14285635672022 5.6148e-05 deg
M 77.19303915179314 1.1097e-05 deg
tp 2459120.252478852715
(2020-Sep-27.75247885)
3.9874e-05 TDB
period 1288.317038761293
3.53
6.315e-06
1.729e-08
d
yr
n .2794343233604497 1.3697e-09 deg/d
Q 2.695291322065669 8.8078e-09 au
  Orbit Determination Parameters
   # obs. used (total)      665  
   data-arc span      22044 days (60.35 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49608  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:50:59  

Additional Information
 Earth MOID = .942239 au 
 Jupiter MOID = 2.78645 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 16.67   n/a E2021B10  

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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