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66284 (1999 JU15)
Classification: Main-belt Asteroid          SPK-ID: 2066284
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870220748677916 1.093e-08  
a 2.264857472951239 5.4209e-09 au
q 1.841279129080075 2.6394e-08 au
i 6.256744606962813 5.2577e-07 deg
node 70.12367910523442 8.8549e-06 deg
peri 290.6037874268911 9.9712e-06 deg
M 12.29500822308735 5.046e-06 deg
tp 2459157.980703986807
(2020-Nov-04.48070399)
1.7442e-05 TDB
period 1244.972454431262
3.41
4.4698e-06
1.224e-08
d
yr
n .2891630242248678 1.0382e-09 deg/d
Q 2.688435816822403 6.4348e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2658  
   data-arc span      31190 days (85.39 yr)  
   first obs. used      1935-10-28  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43439  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:01:20  

Additional Information
 Earth MOID = .848348 au 
 Jupiter MOID = 2.78276 au 
 T_jup = 3.586 
[ 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 13.86   n/a MPCxxxxx  
diameter diameter 4.754 km 0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 32.321 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.259   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

66284 (1999 JU15)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JU15 = 1935 UT = 2000 RS9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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