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18003 (1999 JU84)
Classification: Main-belt Asteroid          SPK-ID: 2018003
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615557799015947 2.8106e-08  
a 2.572919060480567 1.1587e-08 au
q 2.157249115040951 7.4415e-08 au
i 13.75910628368533 1.3236e-06 deg
node 53.75888391962653 4.0554e-06 deg
peri 251.8784431210419 7.2688e-06 deg
M 359.641649767875 5.8894e-06 deg
tp 2459202.000523504367
(2020-Dec-18.50052350)
2.4664e-05 TDB
period 1507.431593859298
4.13
1.0183e-05
2.788e-08
d
yr
n .2388168069891216 1.6133e-09 deg/d
Q 2.988589005920183 1.3459e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1425  
   data-arc span      10773 days (29.49 yr)  
   first obs. used      1991-03-19  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:19:45  

Additional Information
 Earth MOID = 1.18586 au 
 Jupiter MOID = 2.30882 au 
 T_jup = 3.370 
[ 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 13.94   n/a E2021B10  
diameter diameter 4.380 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.175   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18003 (1999 JU84)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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