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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3297504320865416 4.4705e-08  
a 2.769806253192894 9.2871e-09 au
q 1.856461444406532 1.2187e-07 au
i 11.1219081799536 4.072e-06 deg
node 252.0502459877219 2.6208e-05 deg
peri 112.8506481412464 2.7376e-05 deg
M 53.4938283724588 5.1131e-06 deg
tp 2458750.307841928920
(2019-Sep-23.80784193)
2.406e-05 TDB
period 1683.730247879597
4.61
8.4682e-06
2.318e-08
d
yr
n .2138109714744184 1.0754e-09 deg/d
Q 3.683151061979256 1.2349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      959  
   data-arc span      6949 days (19.03 yr)  
   first obs. used      2001-10-13  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48667  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:02  

Additional Information
 Earth MOID = .888848 au 
 Jupiter MOID = 1.98594 au 
 T_jup = 3.230 
[ 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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