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123731 (2001 AH8)
Classification: Main-belt Asteroid          SPK-ID: 2123731
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05005383814792549 4.8986e-08  
a 3.131198190325564 3.6228e-08 au
q 2.974469702897931 1.4806e-07 au
i 14.35756786357565 6.9298e-06 deg
node 283.5700981897622 2.3565e-05 deg
peri 144.6256640251646 8.836e-05 deg
M 216.1558332462349 8.7149e-05 deg
tp 2459809.137759452966
(2022-Aug-17.63775945)
0.00049751 TDB
period 2023.784488260788
5.54
3.5123e-05
9.616e-08
d
yr
n .1778845534631896 3.0872e-09 deg/d
Q 3.287926677753197 3.8042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-09-13  
   last obs. used      2020-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:32:59  

Additional Information
 Earth MOID = 2.00053 au 
 Jupiter MOID = 1.92052 au 
 T_jup = 3.163 
[ 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 15.0   n/a MPO475084  
diameter diameter 5.804 km 0.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123731 (2001 AH8)          Discovered 2001-Jan-02 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 2001 AH8 = 2004 RX339 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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