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19117 (1981 EL41)
Classification: Main-belt Asteroid          SPK-ID: 2019117
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01180138557004806 3.622e-08  
a 3.073767171214546 2.4598e-08 au
q 3.037492459674487 1.1273e-07 au
i 10.29530873298211 5.0221e-06 deg
node 3.735314584254578 2.4371e-05 deg
peri 234.4257142312482 0.00026968 deg
M 80.23828606158536 0.0002653 deg
tp 2458761.783446614701
(2019-Oct-05.28344661)
0.0014529 TDB
period 1968.361576136924
5.39
2.3628e-05
6.469e-08
d
yr
n .1828932267142353 2.1954e-09 deg/d
Q 3.110041882754605 2.4888e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      15320 days (41.94 yr)  
   first obs. used      1978-10-04  
   last obs. used      2020-09-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52689  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:46:06  

Additional Information
 Earth MOID = 2.03903 au 
 Jupiter MOID = 1.86303 au 
 T_jup = 3.205 
[ 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 14.75   n/a E2021B10  
diameter diameter 4.060 km 1.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.170   0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19117 (1981 EL41)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001211/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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