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185643 (2040 P-L)
Classification: Mars-crossing Asteroid          SPK-ID: 2185643
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2447253278627464 1.5107e-07  
a 2.194269535438836 6.6991e-09 au
q 1.657276203959331 3.3201e-07 au
i 4.816949064836368 1.451e-05 deg
node .8693919608092664 6.4214e-05 deg
peri 343.1651008505009 6.663e-05 deg
M 16.7083819009483 1.5009e-05 deg
tp 2457345.398264247016
(2015-Nov-18.89826425)
4.9459e-05 JED
period 1187.225967701178
3.25
5.4369e-06
1.489e-08
d
yr
n .3032278688252303 1.3886e-09 deg/d
Q 2.731262866918342 8.3385e-09 au
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      19550 days (53.52 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55115  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 15:37:16  

Additional Information
 Earth MOID = .648631 au 
 Jupiter MOID = 2.67127 au 
 T_jup = 3.626 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8 mag n/a MPO248332  

185643 (2040 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2040 P-L = 2220 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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