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20717 (1999 XG93)
Classification: Main-belt Asteroid          SPK-ID: 2020717
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07479214729626187 1.2713e-08  
a 2.806278004704818 1.1745e-08 au
q 2.596390446822676 3.8292e-08 au
i 7.657418091330889 8.3935e-07 deg
node 280.9964739613906 9.5776e-06 deg
peri 158.5107441197086 1.7023e-05 deg
M 194.2399490036422 1.8126e-05 deg
tp 2459991.127354637056
(2023-Feb-15.62735464)
8.8563e-05 TDB
period 1717.095560471287
4.70
1.078e-05
2.951e-08
d
yr
n .2096563570994218 1.3162e-09 deg/d
Q 3.016165562586961 1.2624e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2100  
   data-arc span      12636 days (34.60 yr)  
   first obs. used      1986-02-10  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42876  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:28:23  

Additional Information
 Earth MOID = 1.6136 au 
 Jupiter MOID = 2.16861 au 
 T_jup = 3.306 
[ 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 13.15   n/a E2021B10  
diameter diameter 7.000 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.227   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20717 (1999 XG93)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XG93 = 1998 QB53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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