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300334 Antonalexander (2007 RF18)
Classification: Main-belt Asteroid          SPK-ID: 2300334
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2405673246650929 5.1284e-08  
a 2.420760503356052 2.0923e-08 au
q 1.838404625408763 1.3051e-07 au
i 8.240170718984519 5.993e-06 deg
node 277.4456686579413 4.3204e-05 deg
peri 8.217308228928257 4.5451e-05 deg
M 221.8801321507593 1.7162e-05 deg
tp 2459728.312677822819
(2022-May-28.81267782)
6.9804e-05 TDB
period 1375.707687641401
3.77
1.7836e-05
4.883e-08
d
yr
n .2616834980527051 3.3926e-09 deg/d
Q 3.003116381303341 2.5956e-08 au
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      6885 days (18.85 yr)  
   first obs. used      2002-03-12  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56526  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 15:04:43  

Additional Information
 Earth MOID = .820462 au 
 Jupiter MOID = 2.16943 au 
 T_jup = 3.460 
[ 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 16.3   n/a MPO455217  

300334 Antonalexander           Discovered 2007 Sept. 12 by M. Koenig at Rimbach.
Anton Alexander (b. 2010) is the second son of the discoverer, Michael Koenig, and Agathe Schmid-Koenig.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-05-29Last Updated: 2018-07-10

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