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JPL Small-Body Database Browser
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249967 (2001 UO121)
Classification: Main-belt Asteroid          SPK-ID: 2249967
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3296265350589965 4.5004e-08  
a 2.769423383250882 9.3923e-09 au
q 1.856547949318531 1.2265e-07 au
i 11.12231185765993 4.0955e-06 deg
node 252.0501399038732 2.6924e-05 deg
peri 112.8208486497941 2.8064e-05 deg
M 327.9792070649852 5.2219e-06 deg
tp 2458750.231108740155
(2019-Sep-23.73110874)
2.4303e-05 TDB
period 1683.381147239262
4.61
8.5636e-06
2.345e-08
d
yr
n .213855311728065 1.0879e-09 deg/d
Q 3.682298817183234 1.2488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      6625 days (18.14 yr)  
   first obs. used      2001-10-13  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49466  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:46:49  

Additional Information
 Earth MOID = .888159 au 
 Jupiter MOID = 1.98368 au 
 T_jup = 3.231 
[ 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 15.0   n/a MPO503177  
diameter diameter 5.560 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.051   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

249967 (2001 UO121)          Discovered 2001-Oct-22 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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