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541990 (2012 GW20)
Classification: Main-belt Asteroid          SPK-ID: 2541990
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2060239057625931 9.0311e-08  
a 2.669621093075004 4.9403e-08 au
q 2.119615328573488 2.6977e-07 au
i 13.64160084182998 5.7966e-06 deg
node 80.53929450072275 3.5454e-05 deg
peri 112.2828896550761 5.1856e-05 deg
M 13.09053252914449 3.9013e-05 deg
tp 2459142.566778645330
(2020-Oct-20.06677865)
0.00017134 TDB
period 1593.209416137033
4.36
4.4225e-05
1.211e-07
d
yr
n .2259589959447216 6.2723e-09 deg/d
Q 3.219626857576519 5.9581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      6132 days (16.79 yr)  
   first obs. used      2003-03-09  
   last obs. used      2019-12-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59635  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:55  

Additional Information
 Earth MOID = 1.1588 au 
 Jupiter MOID = 1.88925 au 
 T_jup = 3.311 
[ 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 17.0   n/a MPO369158  

541990 (2012 GW20)          Discovered 2003-Mar-09 by NEAT at Palomar
Reference: Last Updated: 2019-12-13

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