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442465 (2011 UA281)
Classification: Outer Main-belt Asteroid          SPK-ID: 2442465
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1520980104265543 1.0241e-07  
a 3.205416174094306 7.7352e-08 au
q 2.717878751425464 3.0181e-07 au
i 20.18978943929386 1.1204e-05 deg
node 80.81895851002268 2.0677e-05 deg
peri 309.5748219541687 3.9537e-05 deg
M 188.404604484787 3.7019e-05 deg
tp 2459999.644247186939
(2023-Feb-24.14424719)
0.00024131 TDB
period 2096.163057914974
5.74
7.5876e-05
2.077e-07
d
yr
n .1717423645267784 6.2167e-09 deg/d
Q 3.692953596763147 8.9117e-08 au
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      5325 days (14.58 yr)  
   first obs. used      2005-09-29  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63643  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 03:53:58  

Additional Information
 Earth MOID = 1.77092 au 
 Jupiter MOID = 1.80095 au 
 T_jup = 3.079 
[ 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 15.6   n/a MPO437720  
diameter diameter 5.350 km 0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.013   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

442465 (2011 UA281)          Discovered 2005-Sep-29 by Siding Spring Survey at Siding Spring
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2011 UA281 = 2010 HX52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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