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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1099328134159299 3.1138e-08  
a 2.407294261779259 9.3511e-09 au
q 2.14265363086184 7.483e-08 au
i 1.317465989374682 4.2499e-06 deg
node 162.3767994974287 0.00016761 deg
peri 140.7878042777481 0.00016896 deg
M 66.7876119083807 2.3011e-05 deg
tp 2458747.403807440470
(2019-Sep-20.90380744)		 8.6835e-05 TDB
period 1364.244456687897
3.74		 7.9491e-06
2.176e-08		 d
yr
n .2638823256603186 1.5376e-09 deg/d
Q 2.671934892696676 1.0379e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1107  
   data-arc span      15108 days (41.36 yr)  
   first obs. used      1978-07-07  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53324  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:50:44  

Additional Information
 Earth MOID = 1.12752 au 
 Jupiter MOID = 2.51011 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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