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JPL Small-Body Database Browser
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146678 (2001 UE221)
Classification: Main-belt Asteroid          SPK-ID: 2146678
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01265795018575848 6.138e-08  
a 2.770330757864261 2.3192e-08 au
q 2.735264049133141 1.7149e-07 au
i 1.367682206901112 4.9768e-06 deg
node 63.0481378358745 0.00023882 deg
peri 106.6357286942847 0.00031121 deg
M 161.2115820318911 0.00019926 deg
tp 2457846.294662165457
(2017-Apr-02.79466217)		 0.00093292 TDB
period 1684.208530170768
4.61		 2.1149e-05
5.79e-08		 d
yr
n .2137502533391742 2.6842e-09 deg/d
Q 2.805397466595381 2.3486e-08 au
   Orbit Determination Parameters
   # obs. used (total)      304  
   data-arc span      8885 days (24.33 yr)  
   first obs. used      1992-11-28  
   last obs. used      2017-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59765  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 05:47:20  

Additional Information
 Earth MOID = 1.7384 au 
 Jupiter MOID = 2.15313 au 
 T_jup = 3.337 
[ 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 16.3   n/a MPO453932  
diameter diameter 4.008 km 0.540 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.033   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146678 (2001 UE221)          Discovered 2001-Oct-23 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2001 UE221 = 2005 QC125 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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