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11838 (1986 PJ1)
Classification: Main-belt Asteroid          SPK-ID: 2011838
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2960795492876591 3.878e-08  
a 2.585213949616613 9.6122e-09 au
q 1.819784968601957 1.0324e-07 au
i 4.335783624439311 3.9383e-06 deg
node 129.3629919524847 5.8473e-05 deg
peri 152.187662015361 5.8824e-05 deg
M 62.88688266519021 6.6152e-06 deg
tp 2458735.283384150461
(2019-Sep-08.78338415)
2.7619e-05 TDB
period 1518.24955633687
4.16
8.4676e-06
2.318e-08
d
yr
n .237115168911087 1.3224e-09 deg/d
Q 3.350642930631269 1.2458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1233  
   data-arc span      13915 days (38.10 yr)  
   first obs. used      1982-09-24  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53303  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:56:56  

Additional Information
 Earth MOID = .80471 au 
 Jupiter MOID = 1.82364 au 
 T_jup = 3.355 
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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 MPO492885  
diameter diameter 3.167 km 0.548 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.212   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11838 (1986 PJ1)          Discovered 1986-Aug-01 by Helin, E. F. at Palomar
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1986 PJ1 = 1982 ST3 = 1998 HX40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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