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18909 (2000 OE21)
Classification: Main-belt Asteroid          SPK-ID: 2018909
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865959216312396 3.7017e-08  
a 3.138544109672364 1.6387e-08 au
q 2.55290457894775 1.1558e-07 au
i 6.101275429612382 3.7018e-06 deg
node 182.3194654854742 3.4762e-05 deg
peri 234.7281952686803 3.5752e-05 deg
M 166.7614943606715 9.3706e-06 deg
tp 2458059.728701347730
(2017-Nov-02.22870135)
5.0013e-05 TDB
period 2030.910485740346
5.56
1.5906e-05
4.355e-08
d
yr
n .1772603975052923 1.3883e-09 deg/d
Q 3.724183640396977 1.9445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1525  
   data-arc span      11273 days (30.86 yr)  
   first obs. used      1989-10-25  
   last obs. used      2020-09-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48557  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:11:59  

Additional Information
 Earth MOID = 1.57063 au 
 Jupiter MOID = 1.67836 au 
 T_jup = 3.175 
[ 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 13.6   n/a MPO263516  
diameter diameter 10.005 km 0.398 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18909 (2000 OE21)          Discovered 2000-Jul-31 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 2000 OE21 = 1989 UY4 = 2000 RN65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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