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469494 (2002 XS40)
Classification: Apollo [NEO]          SPK-ID: 2469494
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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3380493993005778 6.2957e-08  
a 1.497109808951909 6.1011e-09 au
q .9910127373487135 9.1588e-08 au
i 11.6285766522111 9.049e-06 deg
node 97.66686843409221 2.3668e-05 deg
peri 83.70414800089671 2.6429e-05 deg
M 129.5228715792099 1.7068e-05 deg
tp 2458759.774069439272
(2019-Oct-03.27406944)
3.0637e-05 TDB
period 669.0813286120228
1.83
4.09e-06
1.12e-08
d
yr
n .5380511824277069 3.289e-09 deg/d
Q 2.003206880555105 8.1636e-09 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      6527 days (17.87 yr)  
   first obs. used      2002-11-30  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-14 07:48:34  

Additional Information
 Earth MOID = .154636 au 
 Jupiter MOID = 3.00874 au 
 T_jup = 4.465 
[ 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 20.1   n/a MPO409158  
diameter diameter 0.758 km 0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.028   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

469494 (2002 XS40)          Discovered 2002-Dec-12 by NEAT at Palomar
Reference: Last Updated: 2016-08-22

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