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243061 (2007 ET172)
Classification: Main-belt Asteroid          SPK-ID: 2243061
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01903250242495968 5.9019e-08  
a 2.778187321694092 2.9067e-08 au
q 2.725311464756957 1.6789e-07 au
i 4.389438977133333 6.5331e-06 deg
node 13.54949625051628 9.0473e-05 deg
peri 224.0174922046457 0.0002437 deg
M 259.8603556151027 0.00023182 deg
tp 2459470.983349766614
(2021-Sep-13.48334977)
0.0010921 TDB
period 1691.378144553561
4.63
2.6544e-05
7.267e-08
d
yr
n .2128441834011175 3.3403e-09 deg/d
Q 2.831063178631227 2.962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      9770 days (26.75 yr)  
   first obs. used      1993-03-23  
   last obs. used      2019-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:16:30  

Additional Information
 Earth MOID = 1.71549 au 
 Jupiter MOID = 2.13975 au 
 T_jup = 3.330 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO454782  
diameter diameter 2.805 km 0.858 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243061 (2007 ET172)          Discovered 2007-Mar-14 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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