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13870 (2158 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2013870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09995366405641923 3.5721e-08  
a 2.443443737770994 9.1744e-09 au
q 2.199212583265071 8.6022e-08 au
i 6.027379114056109 3.9785e-06 deg
node 205.8829432142354 3.6336e-05 deg
peri 234.5417726394592 4.1331e-05 deg
M 168.2864996379594 2.1202e-05 deg
tp 2458348.348168108579
(2018-Aug-17.84816811)
8.058e-05 TDB
period 1395.089089059376
3.82
7.8573e-06
2.151e-08
d
yr
n .2580480363750292 1.4533e-09 deg/d
Q 2.687674892276917 1.0091e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1365  
   data-arc span      21816 days (59.73 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50456  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:39:50  

Additional Information
 Earth MOID = 1.22087 au 
 Jupiter MOID = 2.52554 au 
 T_jup = 3.486 
[ show covariance matrix ]

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 14.9   n/a MPO473955  

13870 (2158 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2158 P-L = 1997 ML6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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