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39276 (2001 AT39)
Classification: Main-belt Asteroid          SPK-ID: 2039276
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3548414459535305 4.3167e-08  
a 2.921646663547473 1.6948e-08 au
q 1.88492533688898 1.2637e-07 au
i 12.54610939433838 5.6249e-06 deg
node 98.89091309377497 1.6493e-05 deg
peri 258.1265610108453 1.8715e-05 deg
M 34.91310451477678 8.1524e-06 deg
tp 2458823.600773848421
(2019-Dec-06.10077385)
4.0967e-05 TDB
period 1824.063551484366
4.99
1.5872e-05
4.346e-08
d
yr
n .1973615446167121 1.7173e-09 deg/d
Q 3.958367990205966 2.2962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1207  
   data-arc span      7978 days (21.84 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51794  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:09:17  

Additional Information
 Earth MOID = .92736 au 
 Jupiter MOID = 1.7263 au 
 T_jup = 3.149 
[ 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 14.0   n/a MPO493123  
diameter diameter 8.964 km 2.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.049   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

39276 (2001 AT39)          Discovered 2001-Jan-03 by LONEOS at Anderson Mesa
Reference: 20020328/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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