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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956500132623009 5.2923e-08  
a 3.193878015507876 2.7539e-08 au
q 2.568995739415588 1.801e-07 au
i 3.527963990757651 5.5604e-06 deg
node 23.06892184996332 7.9196e-05 deg
peri 323.0705102625342 8.0647e-05 deg
M 352.1961942549855 1.2704e-05 deg
tp 2459245.693904532623
(2021-Jan-31.19390453)		 7.3637e-05 TDB
period 2084.855282582897
5.71		 2.6964e-05
7.382e-08		 d
yr
n .1726738555944283 2.2333e-09 deg/d
Q 3.818760291600163 3.2927e-08 au
   Orbit Determination Parameters
   # obs. used (total)      415  
   data-arc span      8897 days (24.36 yr)  
   first obs. used      1996-04-13  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55258  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:30  

Additional Information
 Earth MOID = 1.56142 au 
 Jupiter MOID = 1.60755 au 
 T_jup = 3.163 
[ 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 15.37   n/a E2021B55  

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

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