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72974 (2002 CE221)
Classification: Main-belt Asteroid          SPK-ID: 2072974
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 .1648408704385819 3.115e-08  
a 2.354321891370845 8.5042e-09 au
q 1.966233421504667 7.4747e-08 au
i 3.734535082277868 3.7474e-06 deg
node 48.22801847957464 5.6648e-05 deg
peri 209.34547577085 5.7988e-05 deg
M 4.277656540871636 1.4054e-05 deg
tp 2459184.821641205377
(2020-Dec-01.32164121)
5.1477e-05 TDB
period 1319.462914363451
3.61
7.1492e-06
1.957e-08
d
yr
n .272838286003419 1.4783e-09 deg/d
Q 2.742410361237024 9.9061e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   data-arc span      10689 days (29.26 yr)  
   first obs. used      1991-02-14  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54931  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:05:06  

Additional Information
 Earth MOID = .950635 au 
 Jupiter MOID = 2.3109 au 
 T_jup = 3.534 
[ 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 15.58   n/a E2021B10  
diameter diameter 4.455 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72974 (2002 CE221)          Discovered 2002-Feb-10 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 CE221 = 1999 ND31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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