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249230 (2008 GZ21)
Classification: Mars-crossing Asteroid          SPK-ID: 2249230
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1657995351440535 3.6957e-08  
a 1.771471316523701 7.5214e-09 au
q 1.477762195723047 6.4559e-08 au
i 20.55490465374082 6.9586e-06 deg
node 217.8950702456954 1.0805e-05 deg
peri 289.5540756924294 2.2673e-05 deg
M 94.29032463919307 2.2206e-05 deg
tp 2458774.938879088099
(2019-Oct-18.43887909)
5.2406e-05 TDB
period 861.1912604926119
2.36
5.4847e-06
1.502e-08
d
yr
n .4180256076844946 2.6623e-09 deg/d
Q 2.065180437324355 8.7684e-09 au
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      10831 days (29.65 yr)  
   first obs. used      1990-10-22  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5264  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 04:39:56  

Additional Information
 Earth MOID = .573231 au 
 Jupiter MOID = 3.04724 au 
 T_jup = 4.015 
[ 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 18.0   n/a MPO454846  

249230 (2008 GZ21)          Discovered 2008-Apr-06 by CSS at Catalina
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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