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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2182186663595616 6.7678e-08  
a 2.793741894378319 2.0109e-08 au
q 2.184095264034247 1.9318e-07 au
i 10.84545683333412 6.2073e-06 deg
node 53.99207714429394 3.0889e-05 deg
peri 352.6088543152337 3.5852e-05 deg
M 346.9803524258785 1.5921e-05 deg
tp 2459062.184290718671
(2020-Jul-31.68429072)
7.5696e-05 TDB
period 1705.602592719939
4.67
1.8415e-05
5.042e-08
d
yr
n .2110690975357307 2.2789e-09 deg/d
Q 3.403388524722391 2.4498e-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 = 1.19457 au 
 Jupiter MOID = 1.9979 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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