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146644 (2001 UA76)
Classification: Main-belt Asteroid          SPK-ID: 2146644
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1309346885474863 4.282e-08  
a 2.771597920211983 1.8544e-08 au
q 2.408699609750167 1.1966e-07 au
i 15.14047150292707 5.8561e-06 deg
node 59.19014546925057 1.9757e-05 deg
peri 58.00876016816819 3.2184e-05 deg
M 314.8827503042605 2.5535e-05 deg
tp 2459211.719438545574
(2020-Dec-28.21943855)
0.0001205 TDB
period 1685.364209680249
4.61
1.6915e-05
4.631e-08
d
yr
n .2136036815854182 2.1438e-09 deg/d
Q 3.1344962306738 2.0972e-08 au
  Orbit Determination Parameters
   # obs. used (total)      746  
   data-arc span      6626 days (18.14 yr)  
   first obs. used      2001-09-10  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58384  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 17:06:23  

Additional Information
 Earth MOID = 1.46092 au 
 Jupiter MOID = 2.17536 au 
 T_jup = 3.274 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456700.5 (2014-Feb-12.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1290649497376014 4.2954e-08  
q 2.415143984581615 1.1983e-07 au
tp 2457527.365013222461
(2016-May-18.86501322)
0.00011561 TDB
node 59.24277652585454 1.9779e-05 deg
peri 58.19679834946192 3.2461e-05 deg
i 15.12852763323655 5.8516e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      746  
   data-arc span      6626 days (18.14 yr)  
   first obs. used      2001-09-10  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58384  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 17:06:23  

Additional Information
 Jupiter MOID = 2.17536 au 
 T_jup = 3.274 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.84501691325466E-15 -5.099767682917158E-15 4.984220027333899E-14 3.266612646255977E-15 2.963399663540263E-14 -5.233772638543807E-16
q -5.099767682917158E-15 1.435974183602781E-14 4.600077828327794E-13 -8.739356812047256E-15 1.876644316898337E-14 3.131480465045435E-15
tp 4.984220027333899E-14 4.600077828327794E-13 1.336629646137077E-8 -4.56295742967021E-11 2.994555352706835E-9 8.357745736573912E-12
node 3.266612646255977E-15 -8.739356812047256E-15 -4.56295742967021E-11 3.912269124248129E-10 -3.873358857001156E-10 -1.749922320157556E-11
peri 2.963399663540263E-14 1.876644316898337E-14 2.994555352706835E-9 -3.873358857001156E-10 1.053711356764345E-9 1.849574262783598E-11
i -5.233772638543807E-16 3.131480465045435E-15 8.357745736573912E-12 -1.749922320157556E-11 1.849574262783598E-11 3.424086224536076E-11

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 14.7   n/a MPO493834  
diameter diameter 3.793 km 0.821 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.213   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146644 (2001 UA76)          Discovered 2001-Oct-17 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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