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4322 Billjackson (1981 EE37)
Classification: Main-belt Asteroid          SPK-ID: 2004322
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1824978936921066 1.199e-08  
a 2.275848147426509 4.9319e-09 au
q 1.860510654158088 2.7461e-08 au
i 4.517053894778272 8.5176e-07 deg
node 19.53760046054107 1.3209e-05 deg
peri 319.4255870244272 1.4732e-05 deg
M 53.29129152192579 5.1741e-06 deg
tp 2459014.861909217347
(2020-Jun-14.36190922)
1.7946e-05 TDB
period 1254.045656864198
3.43
4.0764e-06
1.116e-08
d
yr
n .2870708877539573 9.3314e-10 deg/d
Q 2.691185640694929 5.8319e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2536  
   data-arc span      23876 days (65.37 yr)  
   first obs. used      1955-10-24  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44089  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:12:37  

Additional Information
 Earth MOID = .852885 au 
 Jupiter MOID = 2.69899 au 
 T_jup = 3.583 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.01   n/a MPCxxxxx  
diameter diameter 3.685 km 0.476 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.373   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

4322 Billjackson (1981 EE37)          Discovered 1981-Mar-11 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 EE37 = 1965 UC1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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