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72581 (2001 EE22)
Classification: Main-belt Asteroid          SPK-ID: 2072581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1040199119329815 3.9714e-08  
a 2.605982237064559 1.3444e-08 au
q 2.33490819426619 1.0478e-07 au
i 3.413027305357365 5.0293e-06 deg
node 210.9170643034773 5.7668e-05 deg
peri 318.6124163754351 6.1728e-05 deg
M 245.6820472157368 2.3729e-05 deg
tp 2459688.441257705109
(2022-Apr-18.94125770)
0.00010307 TDB
period 1536.581512313612
4.21
1.1891e-05
3.256e-08
d
yr
n .2342863018428176 1.813e-09 deg/d
Q 2.877056279862928 1.4843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      10140 days (27.76 yr)  
   first obs. used      1993-04-29  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52786  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:02:51  

Additional Information
 Earth MOID = 1.34169 au 
 Jupiter MOID = 2.09724 au 
 T_jup = 3.402 
[ 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 15.79   n/a E2021B10  
diameter diameter 2.206 km 0.668 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.174   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72581 (2001 EE22)          Discovered 2001-Mar-15 by LONEOS at Anderson Mesa
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2001 EE22 = 1997 HN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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