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249966 (2001 UJ98)
Classification: Main-belt Asteroid          SPK-ID: 2249966
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2180825317748986 6.7832e-08  
a 2.795178412360423 2.0407e-08 au
q 2.18559882743032 1.931e-07 au
i 10.84629679826805 6.2076e-06 deg
node 54.00460146315558 3.0875e-05 deg
peri 352.4412713617464 3.5865e-05 deg
M 262.7083169035566 1.5611e-05 deg
tp 2459061.802643043684
(2020-Jul-31.30264304)
7.5769e-05 TDB
period 1706.918271021225
4.67
1.8693e-05
5.118e-08
d
yr
n .2109064072438671 2.3097e-09 deg/d
Q 3.404757997290525 2.4858e-08 au
  Orbit Determination Parameters
   # obs. used (total)      300  
   data-arc span      6468 days (17.71 yr)  
   first obs. used      2001-10-17  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52262  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:19:23  

Additional Information
 Earth MOID = 1.19557 au 
 Jupiter MOID = 1.99534 au 
 T_jup = 3.267 
[ 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 16.4   n/a MPO454854  
diameter diameter 3.225 km 0.924 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249966 (2001 UJ98)          Discovered 2001-Oct-17 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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