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JPL Small-Body Database Browser
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523631 (2009 SX1)
Classification: Apollo [NEO]          SPK-ID: 2523631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4473866462460648 1.7338e-08  
a 1.72204736064578 4.5869e-09 au
q .9516263672895767 2.9709e-08 au
i 8.285906314870413 4.2106e-06 deg
node 335.1218584592366 2.4137e-05 deg
peri 115.1997054903438 2.8329e-05 deg
M 56.38112968683351 4.979e-06 deg
tp 2458471.230122657460
(2018-Dec-18.73012266)
1.1331e-05 TDB
period 825.4030400207118
2.26
3.2979e-06
9.029e-09
d
yr
n .4361505622646683 1.7426e-09 deg/d
Q 2.492468354001983 6.639e-09 au
  Orbit Determination Parameters
   # obs. used (total)      565  
   data-arc span      6139 days (16.81 yr)  
   first obs. used      2002-08-11  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38748  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jun-03 06:46:21  

Additional Information
 Earth MOID = .0732753 au 
 Jupiter MOID = 2.769 au 
 T_jup = 4.040 
[ 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 18.9   n/a MPO450763  
diameter diameter 0.564 km 0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 4.1321 h n/a LCDB (Rev. 2019-January); 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. 46-2, submitted. (NEA Gaggle) http://www.planetarysciences.org/PHP/CS3_Lightcurves.php]
geometric albedo albedo 0.167   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

523631 (2009 SX1)          Discovered 2009-Sep-18 by CSS at Catalina
Reference: Last Updated: 2018-10-01

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