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66312 (1999 JJ43)
Classification: Main-belt Asteroid          SPK-ID: 2066312
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2039886961428623 2.8247e-08  
a 2.308994632626974 6.1274e-09 au
q 1.83798582811653 6.5812e-08 au
i 7.060621397475225 4.2024e-06 deg
node 38.84926603189034 2.3494e-05 deg
peri 234.578398754942 2.5767e-05 deg
M 27.79450356810899 9.9082e-06 deg
tp 2459101.556052581321
(2020-Sep-09.05605258)
3.5218e-05 TDB
period 1281.541905702324
3.51
5.1012e-06
1.397e-08
d
yr
n .2809116099896156 1.1182e-09 deg/d
Q 2.780003437137418 7.3773e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1415  
   data-arc span      7800 days (21.36 yr)  
   first obs. used      1999-04-15  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4998  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:21:06  

Additional Information
 Earth MOID = .830997 au 
 Jupiter MOID = 2.35129 au 
 T_jup = 3.548 
[ 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 15.18   n/a E2021B10  
diameter diameter 2.950 km 0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.203   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66312 (1999 JJ43)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JJ43 = 2000 UP52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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