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541989 (2012 GP18)
Classification: Main-belt Asteroid          SPK-ID: 2541989
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1660266228210284 7.1433e-08  
a 3.155112275358695 4.2435e-08 au
q 2.631279639659721 2.3564e-07 au
i 10.42639212145358 8.1447e-06 deg
node 167.5579781319273 4.4934e-05 deg
peri 342.0050753083129 5.3315e-05 deg
M 232.3622687389439 2.9143e-05 deg
tp 2459926.267020627038
(2022-Dec-12.76702063)
0.00017484 TDB
period 2047.013252620013
5.60
4.1297e-05
1.131e-07
d
yr
n .1758659840327017 3.548e-09 deg/d
Q 3.67894491105767 4.9481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      9336 days (25.56 yr)  
   first obs. used      1995-03-26  
   last obs. used      2020-10-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:25:08  

Additional Information
 Earth MOID = 1.64406 au 
 Jupiter MOID = 1.3329 au 
 T_jup = 3.160 
[ 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 16.9   .31571 MPO504560 autocmod 2.8

541989 (2012 GP18)          Discovered 1995-Mar-26 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-12-13

[ show close-approach data ]
Alternate Designations
 2012 GP18 = 1995 FY8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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