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213815 (2003 QB20)
Classification: Main-belt Asteroid          SPK-ID: 2213815
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978984980538276 4.2792e-08  
a 2.265209260175757 7.0386e-09 au
q 1.816927749809353 9.7852e-08 au
i 7.29122694432217 4.4456e-06 deg
node 132.5786333767252 2.6072e-05 deg
peri 236.6178893750618 2.7844e-05 deg
M 9.718636529326924 8.7522e-06 deg
tp 2459166.882628094335
(2020-Nov-13.38262809)
3.0282e-05 TDB
period 1245.262527260873
3.41
5.804e-06
1.589e-08
d
yr
n .2890956662703644 1.3474e-09 deg/d
Q 2.713490770542161 8.4315e-09 au
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      7941 days (21.74 yr)  
   first obs. used      1999-05-17  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50719  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:44:13  

Additional Information
 Earth MOID = .825679 au 
 Jupiter MOID = 2.76503 au 
 T_jup = 3.580 
[ 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 16.25   n/a MPCxxxxx  
diameter diameter 1.508 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.309   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

213815 (2003 QB20)          Discovered 2003-Aug-22 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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