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66842 (1999 UG53)
Classification: Main-belt Asteroid          SPK-ID: 2066842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2114437718801522 4.7476e-08  
a 2.566747271924657 1.3649e-08 au
q 2.024024547285817 1.2734e-07 au
i 12.60109397988283 6.6057e-06 deg
node 327.4723896794579 1.7622e-05 deg
peri 43.44578244570807 2.5399e-05 deg
M 15.79094992438061 2.1071e-05 deg
tp 2458934.616168760547
(2020-Mar-26.11616876)
8.7528e-05 TDB
period 1502.010921431855
4.11
1.1981e-05
3.28e-08
d
yr
n .2396786833326185 1.9118e-09 deg/d
Q 3.109469996563497 1.6535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1254  
   data-arc span      15638 days (42.81 yr)  
   first obs. used      1977-02-25  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49607  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:04:18  

Additional Information
 Earth MOID = 1.04086 au 
 Jupiter MOID = 2.42167 au 
 T_jup = 3.367 
[ 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 14.3   n/a MPO445650  
diameter diameter 4.004 km 0.715 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66842 (1999 UG53)          Discovered 1999-Oct-20 by LONEOS at Anderson Mesa
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2102-Apr-26 03:20 00:01 Iris 0.0438175765617036 0.0438076701754024 0.0438274906740448 5.06360128678714 5.06360126087728 2488914.638926316 1.07061690537316 1043.78781245971 34.9922329516088 -61.8131207335173 165081.23025522 T 22 CATAB v2.0f-lin.ifort 2020-Feb-23 15:04:36 2020-Feb-23 15:04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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