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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2406166434064847 5.2971e-08  
a 2.420716943127409 2.1909e-08 au
q 1.838252157634885 1.3454e-07 au
i 8.24084675726594 6.3498e-06 deg
node 277.4472040166054 4.8221e-05 deg
peri 8.188432904499104 5.0597e-05 deg
M 169.5872897596369 1.7071e-05 deg
tp 2458352.454885960321
(2018-Aug-21.95488596)
6.1516e-05 TDB
period 1375.670555175126
3.77
1.8676e-05
5.113e-08
d
yr
n .2616905614834297 3.5528e-09 deg/d
Q 3.003181728619932 2.7181e-08 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6475 days (17.73 yr)  
   first obs. used      2002-03-12  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58359  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 18:39:21  

Additional Information
 Earth MOID = .822224 au 
 Jupiter MOID = 2.16994 au 
 T_jup = 3.460 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457092.5 (2015-Mar-11.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2409321350661359 5.2766e-08  
q 1.837092654448919 1.3405e-07 au
tp 2456978.042751228714
(2014-Nov-16.54275123)
5.7484e-05 TDB
node 277.4973776631628 4.8256e-05 deg
peri 8.268538599281996 5.0635e-05 deg
i 8.238641953802995 6.3473e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      6475 days (17.73 yr)  
   first obs. used      2002-03-12  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58359  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 18:39:21  

Additional Information
 Jupiter MOID = 2.16994 au 
 T_jup = 3.460 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.784245146185361E-15 -7.024106305163795E-15 -9.177734173141885E-13 2.922952213213395E-14 -2.696145456960694E-13 -2.041263985101559E-15
q -7.024106305163795E-15 1.796814173617029E-14 2.278296633634405E-12 -7.8743229558221E-14 6.797411317780398E-13 5.825666394795041E-15
tp -9.177734173141885E-13 2.278296633634405E-12 3.304359482462186E-9 -1.864997941449787E-11 9.343036493615929E-10 2.606440456400871E-12
node 2.922952213213395E-14 -7.8743229558221E-14 -1.864997941449787E-11 2.328662769774308E-9 -2.308520887684065E-9 -9.305411507120726E-11
peri -2.696145456960694E-13 6.797411317780398E-13 9.343036493615929E-10 -2.308520887684065E-9 2.563926616175778E-9 9.272643546933644E-11
i -2.041263985101559E-15 5.825666394795041E-15 2.606440456400871E-12 -9.305411507120726E-11 9.272643546933644E-11 4.028825413312417E-11

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

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