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172840 (2005 EK3)
Classification: Main-belt Asteroid          SPK-ID: 2172840
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0728895602394513 5.0417e-08  
a 2.370378076884208 1.3592e-08 au
q 2.197602261258881 1.1828e-07 au
i 4.209201699868662 4.5657e-06 deg
node 113.9057379373 6.682e-05 deg
peri 79.34404235469987 7.4171e-05 deg
M 26.54100915978764 3.3511e-05 deg
tp 2458902.225738104035
(2020-Feb-22.72573810)
0.00012398 TDB
period 1332.983763712717
3.65
1.1465e-05
3.139e-08
d
yr
n .2700708064120028 2.3229e-09 deg/d
Q 2.543153892509534 1.4583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      298  
   data-arc span      6973 days (19.09 yr)  
   first obs. used      2000-12-21  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58517  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:55:05  

Additional Information
 Earth MOID = 1.20149 au 
 Jupiter MOID = 2.41792 au 
 T_jup = 3.538 
[ 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 17.0   n/a MPO417930  
diameter diameter 2.188 km 0.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172840 (2005 EK3)          Discovered 2005-Mar-01 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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