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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2446009746061196 1.5104e-07  
a 2.194012456541308 6.7109e-09 AU
q 1.657354871373337 3.319e-07 AU
i 4.816887130489578 1.451e-05 deg
node .8729452647768289 6.4219e-05 deg
peri 343.2170309541152 6.6634e-05 deg
M 194.686155514287 1.4904e-05 deg
tp 2457345.584440676553
(2015-Nov-19.08444068)
4.9417e-05 JED
period 1187.017332117746
3.25
5.4461e-06
1.491e-08
d
yr
n .3032811655392829 1.3915e-09 deg/d
Q 2.730670041709278 8.3523e-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 = .649399 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 (675)
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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