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120957 (1998 UW40)
Classification: Main-belt Asteroid          SPK-ID: 2120957
[ 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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964530237228454 7.6572e-08  
a 3.196373543971408 3.4108e-08 au
q 2.568436296310518 2.4159e-07 au
i 3.527173290930479 9.0643e-06 deg
node 23.13109534887164 8.4238e-05 deg
peri 323.0505696992099 8.6054e-05 deg
M 317.6957822730315 1.7813e-05 deg
tp 2459245.782116996595
(2021-Jan-31.28211700)		 0.00010501 TDB
period 2087.299254383398
5.71		 3.341e-05
9.147e-08		 d
yr
n .1724716756564676 2.7606e-09 deg/d
Q 3.824310791632299 4.0808e-08 au
   Orbit Determination Parameters
   # obs. used (total)      351  
   data-arc span      8424 days (23.06 yr)  
   first obs. used      1996-04-13  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58426  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:58:25  

Additional Information
 Earth MOID = 1.56266 au 
 Jupiter MOID = 1.60159 au 
 T_jup = 3.162 
[ 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 15.3   n/a MPO475062  

120957 (1998 UW40)          Discovered 1998-Oct-28 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1998 UW40 = 2003 OL8 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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