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17393 (1981 EA41)
Classification: Main-belt Asteroid          SPK-ID: 2017393
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04507159965447772 3.9527e-08  
a 3.135801584400118 1.9404e-08 au
q 2.994465990792159 1.2148e-07 au
i 6.294487241611381 5.4861e-06 deg
node 182.8749286914636 3.255e-05 deg
peri 316.7833700040807 6.4117e-05 deg
M 95.74514527603665 5.4798e-05 deg
tp 2458661.069434091707
(2019-Jun-26.56943409)
0.0003083 TDB
period 2028.249089466775
5.55
1.8826e-05
5.154e-08
d
yr
n .1774929922905296 1.6475e-09 deg/d
Q 3.277137178008077 2.0279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      15214 days (41.65 yr)  
   first obs. used      1978-10-03  
   last obs. used      2020-05-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54187  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:02:27  

Additional Information
 Earth MOID = 2.01032 au 
 Jupiter MOID = 1.7217 au 
 T_jup = 3.201 
[ 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 14.23   n/a E2021B10  
diameter diameter 7.446 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17393 (1981 EA41)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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