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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2209192676233969 7.7977e-08  
a 2.640188325081744 1.9681e-08 au
q 2.056919853916843 2.0904e-07 au
i 1.126277957650073 7.7017e-06 deg
node 297.1784276006758 0.00028107 deg
peri 54.72642854067143 0.00028169 deg
M 110.7384577384548 1.6308e-05 deg
tp 2458518.500312925676
(2019-Feb-04.00031293)
6.8703e-05 TDB
period 1566.934296272942
4.29
1.752e-05
4.797e-08
d
yr
n .2297479867894168 2.5689e-09 deg/d
Q 3.223456796246646 2.4028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      8151 days (22.32 yr)  
   first obs. used      1997-09-30  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:22:43  

Additional Information
 Earth MOID = 1.05164 au 
 Jupiter MOID = 2.21704 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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