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190438 (1999 XD193)
Classification: Main-belt Asteroid          SPK-ID: 2190438
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2458858660635438 4.1926e-08  
a 2.804414185183986 1.8389e-08 au
q 2.114848374459134 1.1798e-07 au
i 6.662134070528062 5.7442e-06 deg
node 321.8602190278801 4.0589e-05 deg
peri 65.55089481181722 4.25e-05 deg
M 205.4977405599742 1.4234e-05 deg
tp 2459936.696915971429
(2022-Dec-23.19691597)
7.298e-05 TDB
period 1715.385203493373
4.70
1.6872e-05
4.619e-08
d
yr
n .2098653989009943 2.0642e-09 deg/d
Q 3.493979995908838 2.2911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      7521 days (20.59 yr)  
   first obs. used      1999-10-14  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58449  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:07:39  

Additional Information
 Earth MOID = 1.12824 au 
 Jupiter MOID = 2.03818 au 
 T_jup = 3.269 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.39   n/a E2021B55  
diameter diameter 5.141 km 0.769 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

190438 (1999 XD193)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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