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216470 (1997 UG18)
Classification: Main-belt Asteroid          SPK-ID: 2216470
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0576293706239546 4.8468e-08  
a 2.746429156903138 2.2492e-08 au
q 2.588154173127532 1.3565e-07 au
i 5.972891338588036 5.5809e-06 deg
node 65.84729767115901 5.3683e-05 deg
peri 247.0710664819338 7.6711e-05 deg
M 115.7049069028742 5.3432e-05 deg
tp 2458666.181384788739
(2019-Jul-01.68138479)
0.0002482 TDB
period 1662.459325407191
4.55
2.0423e-05
5.592e-08
d
yr
n .2165466513966133 2.6602e-09 deg/d
Q 2.904704140678744 2.3789e-08 au
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      9407 days (25.75 yr)  
   first obs. used      1995-04-08  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59678  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:54:56  

Additional Information
 Earth MOID = 1.57905 au 
 Jupiter MOID = 2.24151 au 
 T_jup = 3.337 
[ 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 16.38   n/a MPCxxxxx  
diameter diameter 2.703 km 0.874 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216470 (1997 UG18)          Discovered 1997-Oct-28 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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