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215388 (2002 CG81)
Classification: Main-belt Asteroid          SPK-ID: 2215388
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03351547574693822 4.737e-08  
a 3.123960846486414 3.2117e-08 au
q 3.019259812501614 1.5996e-07 au
i 10.96641659727459 5.7509e-06 deg
node 148.7972122362015 3.2602e-05 deg
peri 120.9876313528807 0.00010919 deg
M 355.928103445012 0.00010256 deg
tp 2459023.311352499382
(2020-Jun-22.81135250)
0.00057449 TDB
period 2016.771985456706
5.52
3.1101e-05
8.515e-08
d
yr
n .1785030745151275 2.7528e-09 deg/d
Q 3.228661880471214 3.3193e-08 au
  Orbit Determination Parameters
   # obs. used (total)      365  
   data-arc span      6297 days (17.24 yr)  
   first obs. used      2002-02-07  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51906  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:21:58  

Additional Information
 Earth MOID = 2.01954 au 
 Jupiter MOID = 1.86057 au 
 T_jup = 3.186 
[ 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 15.3   n/a MPO433409  
diameter diameter 3.961 km 1.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.135   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215388 (2002 CG81)          Discovered 2002-Feb-07 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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