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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0783088307562352 3.1225e-08  
a 2.353459257127632 8.8651e-09 au
q 2.169162614469529 7.3675e-08 au
i 7.084303169171724 3.407e-06 deg
node 119.1125325675392 2.6557e-05 deg
peri 281.5329100724658 3.4714e-05 deg
M 319.4819612519365 2.4192e-05 deg
tp 2459544.924080765449
(2021-Nov-26.42408077)
8.9018e-05 TDB
period 1318.737794980648
3.61
7.4512e-06
2.04e-08
d
yr
n .2729883084948534 1.5425e-09 deg/d
Q 2.537755899785734 9.5593e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1458  
   data-arc span      10043 days (27.50 yr)  
   first obs. used      1994-02-08  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52218  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:41:05  

Additional Information
 Earth MOID = 1.19007 au 
 Jupiter MOID = 2.73536 au 
 T_jup = 3.542 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457444.5 (2016-Feb-26.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07898469420263668 3.1294e-08  
q 2.167722901044879 7.397e-08 au
tp 2456909.920909980717
(2014-Sep-09.42090998)
8.2562e-05 TDB
node 119.1407049413369 2.6556e-05 deg
peri 282.1401711891839 3.4585e-05 deg
i 7.084064116581178 3.4081e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1458  
   data-arc span      10043 days (27.50 yr)  
   first obs. used      1994-02-08  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52218  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:41:05  

Additional Information
 Jupiter MOID = 2.73536 au 
 T_jup = 3.542 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.793454707502567E-16 -2.301337654660308E-15 5.658026890111893E-13 8.111507498228256E-16 1.41766305596045E-13 1.13229845204753E-15
q -2.301337654660308E-15 5.471628846720335E-15 -1.129197424621042E-12 -2.027954926018075E-15 -2.738995633289793E-13 -2.546383574656531E-15
tp 5.658026890111893E-13 -1.129197424621042E-12 6.816490510002078E-9 -4.264533174645272E-12 1.838147451482165E-9 1.291181826241541E-12
node 8.111507498228256E-16 -2.027954926018075E-15 -4.264533174645272E-12 7.052413278380784E-10 -7.009265267826789E-10 -2.050743807423489E-11
peri 1.41766305596045E-13 -2.738995633289793E-13 1.838147451482165E-9 -7.009265267826789E-10 1.196147488380841E-9 2.071351755468923E-11
i 1.13229845204753E-15 -2.546383574656531E-15 1.291181826241541E-12 -2.050743807423489E-11 2.071351755468923E-11 1.161497409364777E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.41   n/a MPO636382  
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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