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JPL Small-Body Database Browser
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66826 (1999 UX36)
Classification: Main-belt Asteroid          SPK-ID: 2066826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039441350298519 4.662e-08  
a 2.677539121577224 1.5609e-08 au
q 2.39922463357629 1.2963e-07 au
i 12.94414540440624 5.1548e-06 deg
node 184.9400020963833 1.7218e-05 deg
peri 15.56422017773464 2.6929e-05 deg
M 51.33004733540646 2.1965e-05 deg
tp 2458772.323282374956
(2019-Oct-15.82328238)
9.6804e-05 TDB
period 1600.302797467997
4.38
1.3994e-05
3.831e-08
d
yr
n .224957427162905 1.9672e-09 deg/d
Q 2.955853609578158 1.7232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      835  
   data-arc span      7652 days (20.95 yr)  
   first obs. used      1998-05-26  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5365  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:28:57  

Additional Information
 Earth MOID = 1.40015 au 
 Jupiter MOID = 2.00156 au 
 T_jup = 3.334 
[ 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 14.8   n/a MPO385242  
diameter diameter 4.288 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.280 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.127   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66826 (1999 UX36)          Discovered 1999-Oct-16 by Spacewatch at Kitt Peak
Reference: 20030910/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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