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181682 (4786 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2181682
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1136425989525899 7.0449e-08  
a 2.577430915834453 1.6258e-08 au
q 2.284524967938272 1.8383e-07 au
i 2.043403312089438 5.7162e-06 deg
node 146.4836430707678 0.00014978 deg
peri 237.4025541606949 0.00015133 deg
M 181.7670810384857 2.1284e-05 deg
tp 2459948.780445349662
(2023-Jan-04.28044535)
9.1546e-05 TDB
period 1511.398466093941
4.14
1.43e-05
3.915e-08
d
yr
n .2381899995772685 2.2537e-09 deg/d
Q 2.870336863730634 1.8106e-08 au
  Orbit Determination Parameters
   # obs. used (total)      394  
   data-arc span      21692 days (59.39 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-02-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57757  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:36  

Additional Information
 Earth MOID = 1.28735 au 
 Jupiter MOID = 2.57213 au 
 T_jup = 3.416 
[ 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 16.40   n/a E2021B55  

181682 (4786 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 4786 P-L = 2000 HL18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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