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216721 (2005 EX199)
Classification: Main-belt Asteroid          SPK-ID: 2216721
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05086978905307572 4.3865e-08  
a 2.908195687314655 2.2983e-08 au
q 2.760256386175894 1.2885e-07 au
i 8.650532230421314 5.1766e-06 deg
node 263.5327551374077 3.2993e-05 deg
peri 257.6230251545846 6.2606e-05 deg
M 92.6286521608742 5.1838e-05 deg
tp 2458734.402568286693
(2019-Sep-07.90256829)
0.00026103 TDB
period 1811.481345160566
4.96
2.1474e-05
5.879e-08
d
yr
n .1987323805247855 2.3558e-09 deg/d
Q 3.056134988453417 2.4152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      470  
   data-arc span      7376 days (20.19 yr)  
   first obs. used      2000-04-07  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55087  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:01  

Additional Information
 Earth MOID = 1.78526 au 
 Jupiter MOID = 2.02451 au 
 T_jup = 3.265 
[ 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 15.25   n/a MPCxxxxx  
diameter diameter 3.637 km 0.637 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.134   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216721 (2005 EX199)          Discovered 2005-Mar-12 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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