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117218 (2004 RF255)
Classification: Main-belt Asteroid          SPK-ID: 2117218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1298778557527007 3.586e-08  
a 3.044419004461268 2.9584e-08 au
q 2.649016392149067 1.0455e-07 au
i 12.48939651538761 4.4956e-06 deg
node 97.00716991806389 1.9362e-05 deg
peri 240.5947718554063 2.7412e-05 deg
M 4.600757743785835 1.9958e-05 deg
tp 2458975.703982833081
(2020-May-06.20398283)
0.00010743 TDB
period 1940.23825578463
5.31
2.8281e-05
7.743e-08
d
yr
n .1855442232038747 2.7045e-09 deg/d
Q 3.439821616773469 3.3426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      7715 days (21.12 yr)  
   first obs. used      1997-03-02  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57375  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:00:08  

Additional Information
 Earth MOID = 1.66506 au 
 Jupiter MOID = 1.95201 au 
 T_jup = 3.190 
[ 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 14.4   n/a MPO436562  

117218 (2004 RF255)          Discovered 2004-Sep-06 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2004 RF255 = 1997 EG59 = 1999 TA237 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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