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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 ]

[ 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 .2115820972880057 3.1561e-08  
a 2.567340849213097 9.2578e-09 au
q 2.02413748788342 8.022e-08 au
i 12.60117048317511 5.184e-06 deg
node 327.4700833256863 1.7293e-05 deg
peri 43.48413812907641 2.2773e-05 deg
M 63.67980427582147 1.4706e-05 deg
tp 2458934.719605051266
(2020-Mar-26.21960505)
6.0736e-05 TDB
period 1502.53197649782
4.11
8.1272e-06
2.225e-08
d
yr
n .239595566437865 1.296e-09 deg/d
Q 3.110544210542774 1.1217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1770  
   data-arc span      16093 days (44.06 yr)  
   first obs. used      1977-02-25  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:32  

Additional Information
 Earth MOID = 1.03948 au 
 Jupiter MOID = 2.4217 au 
 T_jup = 3.367 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457162.5 (2015-May-20.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2136452908198172 3.1686e-08  
q 2.017898459539573 8.0755e-08 au
tp 2457431.700566060358
(2016-Feb-13.20056606)
5.6264e-05 TDB
node 327.6483517263124 1.7301e-05 deg
peri 43.14296133499101 2.2612e-05 deg
i 12.60808271768352 5.1814e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1770  
   data-arc span      16093 days (44.06 yr)  
   first obs. used      1977-02-25  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:32  

Additional Information
 Jupiter MOID = 2.4217 au 
 T_jup = 3.367 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.003976355417593E-15 -2.548543933099937E-15 -6.56264988600752E-13 4.956270052552253E-15 -1.979973291896318E-13 6.653548161844307E-16
q -2.548543933099937E-15 6.521357359277432E-15 1.824454723420154E-12 -1.339757480453558E-14 5.39551153386315E-13 -1.835813336370766E-15
tp -6.56264988600752E-13 1.824454723420154E-12 3.165638675755409E-9 -1.313948646287897E-11 8.317481333146003E-10 -5.656148954034261E-12
node 4.956270052552253E-15 -1.339757480453558E-14 -1.313948646287897E-11 2.993146873211531E-10 -2.948437456420971E-10 -3.844937608997149E-11
peri -1.979973291896318E-13 5.39551153386315E-13 8.317481333146003E-10 -2.948437456420971E-10 5.112986242335302E-10 3.603436545459511E-11
i 6.653548161844307E-16 -1.835813336370766E-15 -5.656148954034261E-12 -3.844937608997149E-11 3.603436545459511E-11 2.684729199735009E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.31   n/a MPCxxxxx  
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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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