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75258 (1999 XE8)
Classification: Main-belt Asteroid          SPK-ID: 2075258
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1993801528368747 4.6384e-08  
a 2.42518643101594 8.7736e-09 au
q 1.941652389742067 1.11e-07 au
i 2.961571740509745 3.6574e-06 deg
node 127.0702292233179 8.5232e-05 deg
peri 292.5928563042939 8.5812e-05 deg
M 168.0885685287012 9.2147e-06 deg
tp 2458356.402224426298
(2018-Aug-25.90222443)
3.4243e-05 TDB
period 1379.482264833137
3.78
7.4858e-06
2.05e-08
d
yr
n .2609674724912435 1.4161e-09 deg/d
Q 2.908720472289812 1.0523e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      8930 days (24.45 yr)  
   first obs. used      1995-11-15  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50071  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:12:31  

Additional Information
 Earth MOID = .956545 au 
 Jupiter MOID = 2.43036 au 
 T_jup = 3.482 
[ 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 15.9   n/a MPO412639  
diameter diameter 1.874 km 0.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.264   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

75258 (1999 XE8)          Discovered 1999-Dec-03 by Kobayashi, T. at Oizumi
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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