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21184 (1994 EC5)
Classification: Main-belt Asteroid          SPK-ID: 2021184
[ 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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06149486605249091 3.608e-08  
a 2.414077365164784 8.4978e-09 au
q 2.265624000953626 8.6572e-08 au
i 6.124796726654509 4.2098e-06 deg
node 345.4695733611816 3.0655e-05 deg
peri 328.7783702579424 4.3584e-05 deg
M 265.3518718259073 3.2243e-05 deg
tp 2459560.692554765917
(2021-Dec-12.19255477)		 0.00012309 TDB
period 1370.014623820353
3.75		 7.2339e-06
1.981e-08		 d
yr
n .2627709177265002 1.3875e-09 deg/d
Q 2.562530729375943 9.0204e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      9594 days (26.27 yr)  
   first obs. used      1994-03-06  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50574  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:41:06  

Additional Information
 Earth MOID = 1.25272 au 
 Jupiter MOID = 2.60899 au 
 T_jup = 3.507 
[ 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 14.76   n/a E2021B10  
diameter diameter 2.522 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.483   0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21184 (1994 EC5)          Discovered 1994-Mar-06 by Spacewatch at Kitt Peak
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 EC5 = 1998 FQ65 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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