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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2302371314313741 1.2026e-08  
a 2.263817548541087 8.5719e-09 au
q 1.742602690080981 2.6855e-08 au
i 21.80790432011799 6.04e-07 deg
node 304.637541833965 1.8887e-06 deg
peri 119.1340876520822 5.5053e-06 deg
M 161.3292110219444 4.4144e-06 deg
tp 2458642.966369497792
(2019-Jun-08.46636950)
1.3407e-05 TDB
period 1244.115096760088
3.41
7.0662e-06
1.935e-08
d
yr
n .2893622952872353 1.6435e-09 deg/d
Q 2.785032407001192 1.0545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1566  
   data-arc span      7901 days (21.63 yr)  
   first obs. used      1998-10-17  
   last obs. used      2020-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41106  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:37  

Additional Information
 Earth MOID = .841336 au 
 Jupiter MOID = 2.62038 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 13.88   n/a E2021B55  
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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