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JPL Small-Body Database Browser
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172872 (2005 EH139)
Classification: Main-belt Asteroid          SPK-ID: 2172872
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08555905311203922 4.4328e-08  
a 2.606136771688254 1.7931e-08 au
q 2.38315817722214 1.1055e-07 au
i 3.272022504325987 5.1637e-06 deg
node 162.52968749013 7.9175e-05 deg
peri 85.32962816467135 8.5325e-05 deg
M 175.5084751385947 3.4624e-05 deg
tp 2458251.313703337071
(2018-May-12.81370334)
0.00014577 TDB
period 1536.718193156618
4.21
1.586e-05
4.342e-08
d
yr
n .2342654636374893 2.4178e-09 deg/d
Q 2.829115366154367 1.9466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      357  
   data-arc span      21603 days (59.15 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54845  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:01:23  

Additional Information
 Earth MOID = 1.37218 au 
 Jupiter MOID = 2.18303 au 
 T_jup = 3.405 
[ 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 16.2   n/a MPO454186  

172872 (2005 EH139)          Discovered 2005-Mar-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2005 EH139 = 2001 KY60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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