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203471 (2002 AU4)
Classification: Aten [NEO]          SPK-ID: 2203471
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 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3735751875961206 9.8769e-08  
a .8554313116550755 1.8746e-09 au
q .5358633989279351 8.4145e-08 au
i 17.18557143892454 1.1868e-05 deg
node 99.44778292393403 9.6468e-06 deg
peri 205.1789923985266 2.2502e-05 deg
M 261.2991315437721 4.3506e-05 deg
tp 2459079.730904591066
(2020-Aug-18.23090459)
3.508e-05 TDB
period 288.985559082827
0.79
9.4993e-07
2.601e-09
d
yr
n 1.245736988182234 4.0949e-09 deg/d
Q 1.174999224382216 2.5749e-09 au
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      9777 days (26.77 yr)  
   first obs. used      1994-01-07  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49302  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-15 07:47:26  

Additional Information
 Earth MOID = .0890722 au 
 Jupiter MOID = 4.04743 au 
 T_jup = 6.801 
[ 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 19.4   n/a MPO396551  
rotation period rot_per 13.26 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2017) Minor Planet Bull. 44, 223-237.]
[Fornas, G.; Carreeno, A.; Arce, E.; Flores, A.; et al. (2018) Minor Planet Bull. 45, 45-47.]

203471 (2002 AU4)          Discovered 2002-Jan-08 by LINEAR at Socorro
Reference: 20090111/Numbers.arcLast Updated: 2009-02-03

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