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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2960795805460615 4.4467e-08  
a 2.585213943221647 1.08e-08 au
q 1.819784883290752 1.1927e-07 au
i 4.335785150630134 4.2483e-06 deg
node 129.3630440629852 5.8632e-05 deg
peri 152.1876033966421 5.9088e-05 deg
M 62.88688929618013 6.6332e-06 deg
tp 2458735.283357169278
(2019-Sep-08.78335717)
2.7745e-05 TDB
period 1518.249550703398
4.16
9.5144e-06
2.605e-08
d
yr
n .2371151697909041 1.4859e-09 deg/d
Q 3.350643003152541 1.3998e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1158  
   data-arc span      13485 days (36.92 yr)  
   first obs. used      1982-09-24  
   last obs. used      2019-08-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53585  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:10:37  

Additional Information
 Earth MOID = .804709 au 
 Jupiter MOID = 1.82364 au 
 T_jup = 3.355 
[ 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 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

[ show close-approach data ]
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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