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21347 (1997 EO11)
Classification: Main-belt Asteroid          SPK-ID: 2021347
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1628429282797177 3.4631e-08  
a 2.693709626856374 1.2657e-08 au
q 2.255058063283816 9.7199e-08 au
i 14.20745130305843 3.5529e-06 deg
node 111.79466126 1.5841e-05 deg
peri 314.143524772424 2.0004e-05 deg
M 262.3343078317195 1.4249e-05 deg
tp 2459834.590792917987
(2022-Sep-12.09079292)
6.5728e-05 TDB
period 1614.821765443819
4.42
1.1381e-05
3.116e-08
d
yr
n .2229348202407077 1.5713e-09 deg/d
Q 3.132361190428932 1.4718e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1750  
   data-arc span      8925 days (24.44 yr)  
   first obs. used      1997-03-03  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:42:00  

Additional Information
 Earth MOID = 1.2929 au 
 Jupiter MOID = 2.18181 au 
 T_jup = 3.308 
[ 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 13.95   n/a MPO636384  
diameter diameter 3.823 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.400   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21347 (1997 EO11)          Discovered 1997-Mar-03 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 EO11 = 2000 WS48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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