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17387 (1981 EV23)
Classification: Main-belt Asteroid          SPK-ID: 2017387
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1560160121574663 4.1743e-08  
a 2.586956473123484 1.1629e-08 au
q 2.183349840561815 1.0814e-07 au
i 7.093677805034681 4.6646e-06 deg
node 358.2393924596236 3.5666e-05 deg
peri 105.7544675710929 3.8685e-05 deg
M 210.2535318168391 1.4343e-05 deg
tp 2459632.673368830968
(2022-Feb-22.17336883)
6.1295e-05 TDB
period 1519.78484394559
4.16
1.0248e-05
2.806e-08
d
yr
n .2368756350177739 1.5972e-09 deg/d
Q 2.990563105685154 1.3443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1267  
   data-arc span      14501 days (39.70 yr)  
   first obs. used      1979-10-18  
   last obs. used      2019-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:03:20  

Additional Information
 Earth MOID = 1.21272 au 
 Jupiter MOID = 2.16453 au 
 T_jup = 3.394 
[ 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 14.5   n/a MPO384903  
diameter diameter 2.972 km 0.373 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.381   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17387 (1981 EV23)          Discovered 1981-Mar-03 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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