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72547 (2001 ET)
Classification: Main-belt Asteroid          SPK-ID: 2072547
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544497214407362 3.5763e-08  
a 2.770569456487769 1.4729e-08 au
q 2.342655775701022 1.0183e-07 au
i 13.45462688993734 4.9039e-06 deg
node 350.4862657039673 1.6927e-05 deg
peri 259.333017258173 2.3317e-05 deg
M 25.42778303677607 1.6363e-05 deg
tp 2459081.524377317390
(2020-Aug-20.02437732)
7.6485e-05 TDB
period 1684.426208285364
4.61
1.3432e-05
3.677e-08
d
yr
n .2137226304300124 1.7043e-09 deg/d
Q 3.198483137274517 1.7004e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1075  
   data-arc span      8005 days (21.92 yr)  
   first obs. used      1998-08-23  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54071  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:02:41  

Additional Information
 Earth MOID = 1.37377 au 
 Jupiter MOID = 2.00643 au 
 T_jup = 3.280 
[ 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 14.51   n/a MPCxxxxx  
diameter diameter 2.924 km 0.810 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72547 (2001 ET)          Discovered 2001-Mar-01 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 ET = 1998 SO77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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