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14810 (1981 EM31)
Classification: Main-belt Asteroid          SPK-ID: 2014810
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 .1098675451093815 2.9581e-08  
a 2.407740726008239 8.5014e-09 au
q 2.143208163181834 6.9847e-08 au
i 1.317399140138737 3.4167e-06 deg
node 162.3720092199432 0.00016437 deg
peri 140.8874689228024 0.00016563 deg
M 119.465596370908 2.2702e-05 deg
tp 2458747.651055681672
(2019-Sep-21.15105568)
8.5162e-05 TDB
period 1364.623999770178
3.74
7.2275e-06
1.979e-08
d
yr
n .263808932028624 1.3972e-09 deg/d
Q 2.672273288834645 9.4354e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1277  
   data-arc span      15559 days (42.60 yr)  
   first obs. used      1978-07-07  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52429  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:39:56  

Additional Information
 Earth MOID = 1.1261 au 
 Jupiter MOID = 2.50921 au 
 T_jup = 3.513 
[ 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 15.6   n/a MPO435839  
diameter diameter 4.177 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14810 (1981 EM31)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20000523/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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