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180750 (2004 LG21)
Classification: Main-belt Asteroid          SPK-ID: 2180750
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2073189547980162 4.4533e-08  
a 2.704706475337285 1.8006e-08 au
q 2.143969555834933 1.2599e-07 au
i 10.67575944897542 5.2733e-06 deg
node 163.0522889326324 2.592e-05 deg
peri 84.07967673975006 2.9153e-05 deg
M 264.9408729843093 1.5575e-05 deg
tp 2459629.512512430145
(2022-Feb-19.01251243)
7.311e-05 TDB
period 1624.72041689757
4.45
1.6224e-05
4.442e-08
d
yr
n .2215765840423338 2.2126e-09 deg/d
Q 3.265443394839637 2.1739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      325  
   data-arc span      8056 days (22.06 yr)  
   first obs. used      1999-02-14  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5318  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:47  

Additional Information
 Earth MOID = 1.16149 au 
 Jupiter MOID = 1.8745 au 
 T_jup = 3.310 
[ 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 16.2   n/a MPO454243  

180750 (2004 LG21)          Discovered 2004-Jun-12 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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