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21970 Tyle (1999 XC)
Classification: Main-belt Asteroid          SPK-ID: 2021970
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682540996644257 4.1011e-08  
a 2.301900939501297 6.6547e-09 au
q 1.914596669408811 9.4121e-08 au
i 6.144655701847016 2.8592e-06 deg
node 74.23428235665466 3.9659e-05 deg
peri 269.5314280049822 4.0764e-05 deg
M 34.02462584752165 8.5514e-06 deg
tp 2459079.935561035677
(2020-Aug-18.43556104)
3.0403e-05 TDB
period 1275.640714512593
3.49
5.5317e-06
1.514e-08
d
yr
n .2822111241075836 1.2238e-09 deg/d
Q 2.689205209593784 7.7744e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2094  
   data-arc span      8884 days (24.32 yr)  
   first obs. used      1996-11-09  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44906  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:56:33  

Additional Information
 Earth MOID = .917139 au 
 Jupiter MOID = 2.72311 au 
 T_jup = 3.564 
[ 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 14.50   n/a E2021B10  

21970 Tyle           Discovered 1999 Dec. 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sheel Tyle (b. 1991) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his biochemistry, medicine, health, & microbiology project. He attends the Pittsford Middle School, Pittsford, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XC = 1998 HA135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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