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72554 (2001 ET3)
Classification: Main-belt Asteroid          SPK-ID: 2072554
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1166083730861065 3.9281e-08  
a 3.054042573243174 1.9855e-08 au
q 2.697915637441581 1.2103e-07 au
i 2.024148014777405 3.5291e-06 deg
node 80.98449243392687 0.00012626 deg
peri 134.0853362712747 0.0001276 deg
M 213.1246094951694 2.1813e-05 deg
tp 2459995.848727586977
(2023-Feb-20.34872759)
0.0001227 TDB
period 1949.445315155739
5.34
1.9011e-05
5.205e-08
d
yr
n .1846679140990626 1.8009e-09 deg/d
Q 3.410169509044767 2.2171e-08 au
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      9571 days (26.20 yr)  
   first obs. used      1994-11-28  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:02:43  

Additional Information
 Earth MOID = 1.69061 au 
 Jupiter MOID = 1.55497 au 
 T_jup = 3.225 
[ 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 14.46   n/a MPCxxxxx  
diameter diameter 7.648 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72554 (2001 ET3)          Discovered 2001-Mar-02 by LONEOS at Anderson Mesa
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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