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103167 (1999 XS228)
Classification: Main-belt Asteroid          SPK-ID: 2103167
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663198935042162 4.4599e-08  
a 2.185680238798538 6.7674e-09 au
q 1.822158134247295 9.7744e-08 au
i 4.380937006037684 3.628e-06 deg
node 298.8191576415109 6.0949e-05 deg
peri 86.34343134136162 6.1882e-05 deg
M 237.7553337598866 1.1835e-05 deg
tp 2459601.279762751189
(2022-Jan-21.77976275)
3.9631e-05 TDB
period 1180.261839048514
3.23
5.4815e-06
1.501e-08
d
yr
n .3050170632393059 1.4166e-09 deg/d
Q 2.549202343349781 7.8929e-09 au
  Orbit Determination Parameters
   # obs. used (total)      871  
   data-arc span      8500 days (23.27 yr)  
   first obs. used      1997-02-07  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48868  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:50:21  

Additional Information
 Earth MOID = .831047 au 
 Jupiter MOID = 2.91915 au 
 T_jup = 3.655 
[ 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 16.02   n/a E2021B55  
diameter diameter 3.560 km 0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103167 (1999 XS228)          Discovered 1999-Dec-14 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XS228 = 2002 TW289 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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