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24278 Davidgreen (1999 XZ170)
Classification: Main-belt Asteroid          SPK-ID: 2024278
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893815272763168 4.6457e-08  
a 2.535706405493466 1.7205e-08 au
q 2.055490453696774 1.164e-07 au
i 4.553902025807522 5.0796e-06 deg
node 4.936994248116721 7.2063e-05 deg
peri 341.4111034897468 7.4545e-05 deg
M 110.9020405697483 2.1769e-05 deg
tp 2458546.156923115872
(2019-Mar-03.65692312)
8.917e-05 TDB
period 1474.846692071622
4.04
1.5011e-05
4.11e-08
d
yr
n .2440931670628974 2.4843e-09 deg/d
Q 3.015922357290159 2.0464e-08 au
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      9816 days (26.87 yr)  
   first obs. used      1993-03-19  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49594  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:10:55  

Additional Information
 Earth MOID = 1.04925 au 
 Jupiter MOID = 2.40175 au 
 T_jup = 3.419 
[ 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 14.4   n/a MPO502341  

24278 Davidgreen           Discovered 1999 Dec. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro.
David Green mentored a finalist in the 2008 Intel Science Talent Search (STS), a science competition for high school seniors. He teaches at the Charles E. Jordan High School, Durham, North Carolina.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080221/MPCPages.arcLast Updated: 2008-03-05

Alternate Designations
 1999 XZ170 = 1993 HZ8 = 1998 ME30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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