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20406 (1998 QJ13)
Classification: Main-belt Asteroid          SPK-ID: 2020406
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1528699122044598 3.2738e-08  
a 2.930408231071139 1.6869e-08 au
q 2.482436982064067 9.5688e-08 au
i 7.303175869576727 3.5134e-06 deg
node 128.7989313515101 3.66e-05 deg
peri 129.5110348427136 3.9611e-05 deg
M 172.4611227892336 1.6133e-05 deg
tp 2458122.732849932331
(2018-Jan-04.23284993)
7.9916e-05 TDB
period 1832.274827588494
5.02
1.5822e-05
4.332e-08
d
yr
n .1964770756981941 1.6966e-09 deg/d
Q 3.37837948007821 1.9448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1604  
   data-arc span      9479 days (25.95 yr)  
   first obs. used      1994-11-28  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52858  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:13:40  

Additional Information
 Earth MOID = 1.47496 au 
 Jupiter MOID = 1.73257 au 
 T_jup = 3.247 
[ 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 MPO416925  
diameter diameter 5.270 km 1.370 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.211   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20406 (1998 QJ13)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QJ13 = 1994 WJ7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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