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175173 (2005 EJ139)
Classification: Main-belt Asteroid          SPK-ID: 2175173
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03933271430805727 7.5297e-08  
a 3.103390680460331 3.2386e-08 au
q 2.981325901439497 2.339e-07 au
i 9.180565165671212 7.3844e-06 deg
node 27.14659782038431 3.3501e-05 deg
peri 154.2837309012731 7.6338e-05 deg
M 332.9057010480591 6.6956e-05 deg
tp 2459350.789459272862
(2021-May-16.28945927)
0.00037169 TDB
period 1996.885227929265
5.47
3.1259e-05
8.558e-08
d
yr
n .1802807667485796 2.8221e-09 deg/d
Q 3.225455459481164 3.366e-08 au
  Orbit Determination Parameters
   # obs. used (total)      392  
   data-arc span      6728 days (18.42 yr)  
   first obs. used      2002-10-13  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59432  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:19  

Additional Information
 Earth MOID = 1.98398 au 
 Jupiter MOID = 1.73206 au 
 T_jup = 3.200 
[ 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 15.3   n/a MPO439998  
diameter diameter 3.934 km 0.350 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.104   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

175173 (2005 EJ139)          Discovered 2005-Mar-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2005 EJ139 = 2002 TJ299 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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