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21179 (1994 CL18)
Classification: Main-belt Asteroid          SPK-ID: 2021179
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07830883242930806 3.13e-08  
a 2.353459259111581 8.9347e-09 au
q 2.169162612360609 7.3796e-08 au
i 7.084303295567901 3.4203e-06 deg
node 119.1125321769562 2.6609e-05 deg
peri 281.5329151329013 3.4882e-05 deg
M 319.4819554804691 2.4453e-05 deg
tp 2459544.924102094942
(2021-Nov-26.42410209)
8.9985e-05 TDB
period 1318.737796648178
3.61
7.5097e-06
2.056e-08
d
yr
n .2729883081496626 1.5546e-09 deg/d
Q 2.537755905862554 9.6344e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1416  
   data-arc span      9686 days (26.52 yr)  
   first obs. used      1994-02-08  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5178  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:40:59  

Additional Information
 Earth MOID = 1.19007 au 
 Jupiter MOID = 2.73536 au 
 T_jup = 3.542 
[ 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 15.40   n/a MPCxxxxx  
diameter diameter 5.372 km 0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21179 (1994 CL18)          Discovered 1994-Feb-08 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 CL18 = 1994 EX5 = 1998 HH110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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