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JPL Small-Body Database Browser
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65221 (2002 ET22)
Classification: Main-belt Asteroid          SPK-ID: 2065221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02726360411521853 4.3927e-08  
a 2.753267003779539 1.8876e-08 au
q 2.678203022165 1.2202e-07 au
i 9.711083288977592 5.4523e-06 deg
node 123.0324190773471 3.585e-05 deg
peri 318.1620874761298 0.00013319 deg
M 80.09612372250015 0.00012696 deg
tp 2458629.238495784479
(2019-May-25.73849578)
0.00058882 TDB
period 1668.67178217817
4.57
1.716e-05
4.698e-08
d
yr
n .2157404492872053 2.2186e-09 deg/d
Q 2.828330985394078 1.9391e-08 au
  Orbit Determination Parameters
   # obs. used (total)      439  
   data-arc span      8454 days (23.15 yr)  
   first obs. used      1996-12-12  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5621  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:36:11  

Additional Information
 Earth MOID = 1.70193 au 
 Jupiter MOID = 2.24581 au 
 T_jup = 3.323 
[ 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 15.6   n/a MPO412591  
diameter diameter 3.592 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

65221 (2002 ET22)          Discovered 2002-Mar-10 by NEAT at Haleakala
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 ET22 = 1997 CC10 = 1998 HL9 = 2000 WC181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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