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JPL Small-Body Database Browser
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338847 (2003 XZ21)
Classification: Mars-crossing Asteroid          SPK-ID: 2338847
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3236570904583569 9.6538e-08  
a 2.107204517706889 1.6519e-08 au
q 1.425192834505172 2.1021e-07 au
i 5.099302652303074 3.3184e-06 deg
node 122.3980340182543 5.9465e-05 deg
peri 193.3577692082126 6.0968e-05 deg
M 224.7928757475522 1.291e-05 deg
tp 2459420.119377314509
(2021-Jul-24.61937731)
3.8015e-05 TDB
period 1117.270829243959
3.06
1.3138e-05
3.597e-08
d
yr
n .3222137288267044 3.7889e-09 deg/d
Q 2.789216200908606 2.1865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      5497 days (15.05 yr)  
   first obs. used      2003-12-14  
   last obs. used      2019-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46456  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:17:43  

Additional Information
 Earth MOID = .412111 au 
 Jupiter MOID = 2.52297 au 
 T_jup = 3.669 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457329.5 (2015-Nov-03.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3241407852963394 9.668e-08  
q 1.42410085581289 2.1051e-07 au
tp 2457185.488004040688
(2015-Jun-11.98800404)
5.336e-05 TDB
node 122.4387778118258 5.9458e-05 deg
peri 193.3500430847471 6.0957e-05 deg
i 5.099963593817238 3.3194e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      5497 days (15.05 yr)  
   first obs. used      2003-12-14  
   last obs. used      2019-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46456  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:17:43  

Additional Information
 Jupiter MOID = 2.52297 au 
 T_jup = 3.669 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.347005694690066E-15 -2.033323520137331E-14 4.39433364016887E-12 -6.70340778593494E-14 8.115669524509668E-13 -7.391430353909548E-14
q -2.033323520137331E-14 4.431321040508014E-14 -9.705057916196784E-12 1.56563171376225E-13 -1.823718909367435E-12 1.626548570878469E-13
tp 4.39433364016887E-12 -9.705057916196784E-12 2.847241317686188E-9 -5.245656485015229E-11 7.001960179705769E-10 -4.465097591531273E-11
node -6.70340778593494E-14 1.56563171376225E-13 -5.245656485015229E-11 3.535289254177038E-9 -3.534585117943968E-9 5.11928018516225E-11
peri 8.115669524509668E-13 -1.823718909367435E-12 7.001960179705769E-10 -3.534585117943968E-9 3.71580640583575E-9 -6.058577036209995E-11
i -7.391430353909548E-14 1.626548570878469E-13 -4.465097591531273E-11 5.11928018516225E-11 -6.058577036209995E-11 1.101828620935888E-11

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 16.8   n/a MPO353079  

338847 (2003 XZ21)          Discovered 2003-Dec-14 by NEAT at Palomar
Reference: 20121029/Numbers.arcLast Updated: 2012-11-08

[ show close-approach data ]
Alternate Designations
 2003 XZ21 = 2008 CH92 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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