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138911 (2001 AE2)
Classification: Amor [NEO]          SPK-ID: 2138911
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 143 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08154210313323351 3.0463e-08  
a 1.349599397991984 1.655e-09 au
q 1.239550224692372 4.0716e-08 au
i 1.661600165395922 2.9385e-06 deg
node 171.4565627161382 9.5917e-05 deg
peri 43.15483737739713 9.7468e-05 deg
M 33.68841735014281 2.0464e-05 deg
tp 2458946.909988701433
(2020-Apr-07.40998870)
3.2507e-05 TDB
period 572.6717247345653
1.57
1.0534e-06
2.884e-09
d
yr
n .6286323987217299 1.1563e-09 deg/d
Q 1.459648571291596 1.79e-09 au
  Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      13114 days (35.90 yr)  
   first obs. used      1984-08-02  
   last obs. used      2020-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-29 06:02:20  

Additional Information
 Earth MOID = .233588 au 
 Jupiter MOID = 3.50088 au 
 T_jup = 4.870 
[ 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 19.2   n/a MPO320524  
rotation period rot_per 15.88 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2018) Minor Planet Bull. 45, 19-34.]
SMASSII spectral type spec_B T   n/a Binzel et al. (2004) Meteorit. Planet. Sci. 39, 351-366  

138911 (2001 AE2)          Discovered 2001-Jan-02 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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