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243584 (1997 TU20)
Classification: Main-belt Asteroid          SPK-ID: 2243584
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .220678871380569 8.1568e-08  
a 2.639698209721945 2.0897e-08 au
q 2.057172588015198 2.1994e-07 au
i 1.126150025072716 7.8361e-06 deg
node 297.1831927223091 0.00028832 deg
peri 54.69949554847645 0.00028893 deg
M 18.87376117764072 1.6263e-05 deg
tp 2458518.373030374066
(2019-Feb-03.87303037)
7.0338e-05 TDB
period 1566.497996189657
4.29
1.8601e-05
5.093e-08
d
yr
n .229811976061037 2.7289e-09 deg/d
Q 3.222223831428693 2.5508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      7140 days (19.55 yr)  
   first obs. used      1997-09-30  
   last obs. used      2017-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53886  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:33:34  

Additional Information
 Earth MOID = 1.05098 au 
 Jupiter MOID = 2.21458 au 
 T_jup = 3.360 
[ 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 16.7   n/a MPO454788  
diameter diameter 2.655 km 0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243584 (1997 TU20)          Discovered 1997-Oct-04 by Spacewatch at Kitt Peak
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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