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186978 (2004 RL257)
Classification: Main-belt Asteroid          SPK-ID: 2186978
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278451219792803 4.7186e-08  
a 3.081446518423157 3.0543e-08 au
q 2.68749861240272 1.5878e-07 au
i 2.291525335046881 4.6347e-06 deg
node 70.22000654504868 0.00016337 deg
peri 230.9300477543608 0.00016607 deg
M 41.42770661649977 2.709e-05 deg
tp 2458973.137534600431
(2020-May-03.63753460)
0.00014972 TDB
period 1975.742666654048
5.41
2.9375e-05
8.042e-08
d
yr
n .1822099639168424 2.7091e-09 deg/d
Q 3.475394424443594 3.4448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      292  
   data-arc span      5874 days (16.08 yr)  
   first obs. used      2004-09-08  
   last obs. used      2020-10-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57187  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:30  

Additional Information
 Earth MOID = 1.67075 au 
 Jupiter MOID = 1.73539 au 
 T_jup = 3.214 
[ 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 16.13   n/a MPCxxxxx  

186978 (2004 RL257)          Discovered 2004-Sep-09 by LONEOS at Anderson Mesa
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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