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118303 (1998 UG)
Classification: Main-belt Asteroid          SPK-ID: 2118303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2302126104392918 3.2038e-08  
a 2.264029747113787 9.2933e-09 au
q 1.742821548918512 7.2259e-08 au
i 21.80786153438934 5.4966e-06 deg
node 304.6377838912108 1.1277e-05 deg
peri 119.1652526778281 1.7298e-05 deg
M 103.4185983795471 1.4255e-05 deg
tp 2458643.047970854087
(2019-Jun-08.54797085)
4.816e-05 TDB
period 1244.290026251005
3.41
7.6613e-06
2.098e-08
d
yr
n .2893216150616149 1.7814e-09 deg/d
Q 2.785237945309062 1.1433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1547  
   data-arc span      7901 days (21.63 yr)  
   first obs. used      1998-10-17  
   last obs. used      2020-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4111  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:51:32  

Additional Information
 Earth MOID = .841714 au 
 Jupiter MOID = 2.6198 au 
 T_jup = 3.490 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO502793  
diameter diameter 4.280 km 0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.384   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118303 (1998 UG)          Discovered 1998-Oct-17 by CSS at Catalina
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1998 UG = 2001 OD14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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