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66288 (1999 JE20)
Classification: Main-belt Asteroid          SPK-ID: 2066288
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1678736797950735 3.247e-08  
a 2.316786952810617 8.7894e-09 au
q 1.927859401741083 7.7441e-08 au
i 3.386925287542653 3.4875e-06 deg
node 258.2160182168628 6.9456e-05 deg
peri 52.72920031174947 7.0713e-05 deg
M 333.0852862800622 1.5974e-05 deg
tp 2459296.797461541206
(2021-Mar-23.29746154)
5.7432e-05 TDB
period 1288.034735036166
3.53
7.3298e-06
2.007e-08
d
yr
n .2794955680988617 1.5905e-09 deg/d
Q 2.70571450388015 1.0265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1440  
   data-arc span      7766 days (21.26 yr)  
   first obs. used      1999-04-14  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53931  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:52  

Additional Information
 Earth MOID = .913726 au 
 Jupiter MOID = 2.54844 au 
 T_jup = 3.559 
[ 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 14.96   n/a E2021B10  
diameter diameter 2.634 km 0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.82657 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.193   0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66288 (1999 JE20)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JE20 = 2000 UH46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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