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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1526626038029725 3.1585e-08  
a 2.93089939608464 1.6515e-08 au
q 2.483460662793799 9.3096e-08 au
i 7.303371411398075 3.4243e-06 deg
node 128.7972301060226 3.2942e-05 deg
peri 129.5410968743592 3.5849e-05 deg
M 211.708959576331 1.5764e-05 deg
tp 2459955.439597898568
(2023-Jan-10.93959790)
8.3161e-05 TDB
period 1832.735507600534
5.02
1.5491e-05
4.241e-08
d
yr
n .1964276888329193 1.6603e-09 deg/d
Q 3.378338129375481 1.9037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1754  
   data-arc span      9593 days (26.26 yr)  
   first obs. used      1994-11-28  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51904  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:19:45  

Additional Information
 Earth MOID = 1.47429 au 
 Jupiter MOID = 1.73167 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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