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120257 (2004 GL18)
Classification: Main-belt Asteroid          SPK-ID: 2120257
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 .2035831718144569 7.8456e-08  
a 2.584045675698203 2.0307e-08 au
q 2.057977460926131 2.0214e-07 au
i 13.06039593736815 7.9013e-06 deg
node 258.3449777895522 3.0933e-05 deg
peri 333.7283207586945 3.4465e-05 deg
M 271.7297335024158 1.654e-05 deg
tp 2459372.515164011226
(2021-Jun-07.01516401)
7.0788e-05 TDB
period 1517.220513293755
4.15
1.7885e-05
4.897e-08
d
yr
n .2372759904349507 2.797e-09 deg/d
Q 3.110113890470275 2.4441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      7282 days (19.94 yr)  
   first obs. used      2000-01-28  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55963  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 17:02:13  

Additional Information
 Earth MOID = 1.054 au 
 Jupiter MOID = 1.95146 au 
 T_jup = 3.358 
[ 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 15.5   n/a MPO270616  

120257 (2004 GL18)          Discovered 2004-Apr-13 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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