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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07877949840580976 3.3126e-08  
a 2.354218402590329 9.0225e-09 au
q 2.168754257696536 7.8839e-08 au
i 7.085021093874715 3.4422e-06 deg
node 119.115763686354 2.8238e-05 deg
peri 281.4093010543862 3.6081e-05 deg
M 266.1543021959782 2.4352e-05 deg
tp 2459544.438204173510
(2021-Nov-25.93820417)
9.0212e-05 TDB
period 1319.375915995986
3.61
7.5847e-06
2.077e-08
d
yr
n .2728562766952123 1.5686e-09 deg/d
Q 2.539682547484122 9.7333e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1394  
   data-arc span      9686 days (26.52 yr)  
   first obs. used      1994-02-08  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52046  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:58:28  

Additional Information
 Earth MOID = 1.18924 au 
 Jupiter MOID = 2.73544 au 
 T_jup = 3.541 
[ 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 15.39   n/a E2021B10  
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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