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27239 O'Dorney (1999 RW211)
Classification: Main-belt Asteroid          SPK-ID: 2027239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091004846320221 3.073e-08  
a 2.288222114183919 6.3974e-09 au
q 2.038575972580743 7.1013e-08 au
i 5.964680492717513 4.0688e-06 deg
node 246.5291214083801 3.4051e-05 deg
peri 219.792900592494 4.1151e-05 deg
M 329.0955407916651 2.1191e-05 deg
tp 2459309.033633384622
(2021-Apr-04.53363338)
7.4354e-05 TDB
period 1264.287064694084
3.46
5.302e-06
1.452e-08
d
yr
n .2847454585696549 1.1941e-09 deg/d
Q 2.537868255787095 7.0954e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1384  
   data-arc span      24211 days (66.29 yr)  
   first obs. used      1954-10-06  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50606  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:23:47  

Additional Information
 Earth MOID = 1.05923 au 
 Jupiter MOID = 2.58908 au 
 T_jup = 3.585 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO337488  

27239 O'Dorney           Discovered 1999 Sept. 8 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Evan Michael O'Dorney (b. 1993) was a finalist in the 2010 Intel Science Talent Search, a science competition for high-school seniors, for his mathematical-sciences project. He attends the Venture School, San Ramon, California, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110319/MPCPages.arcLast Updated: 2011-03-23

Alternate Designations
 1999 RW211 = 1954 TH1 = 1999 UV61 = 2001 FS80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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