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523805 (2001 QA143)
Classification: Amor [NEO]          SPK-ID: 2523805
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 83 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4931580455916751 3.7317e-08  
a 2.259025647043323 1.7851e-09 au
q 1.144968974005969 8.4314e-08 au
i 6.829475656728256 3.6586e-06 deg
node 305.3195031777262 4.7597e-05 deg
peri 98.58652970926002 6.3357e-05 deg
M 166.0174813807375 8.4352e-06 deg
tp 2458428.584997124795
(2018-Nov-06.08499712)
2.8825e-05 TDB
period 1240.166995202726
3.40
1.47e-06
4.025e-09
d
yr
n .2902834871372722 3.4407e-10 deg/d
Q 3.373082320080678 2.6654e-09 au
  Orbit Determination Parameters
   # obs. used (total)      357  
   data-arc span      6383 days (17.48 yr)  
   first obs. used      2001-08-11  
   last obs. used      2019-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48259  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Feb-02 07:25:35  

Additional Information
 Earth MOID = .198896 au 
 Jupiter MOID = 2.12413 au 
 T_jup = 3.442 
[ 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 19.9   n/a MPO457169  
rotation period rot_per 11.78 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.; Stephens, R.D. (2019) Minor Planet Bull. 46, 27-40.]
SMASSII spectral type spec_B Sk   n/a Binzel et al. (2004) Icarus 170, 259-294  

523805 (2001 QA143)          Discovered 2001-Aug-25 by LINEAR at Socorro
Reference: Last Updated: 2018-10-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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