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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1528699142470006 3.2767e-08  
a 2.930408231971549 1.688e-08 au
q 2.482436976841353 9.5755e-08 au
i 7.303175808528264 3.5165e-06 deg
node 128.7989303378528 3.6687e-05 deg
peri 129.5110345231691 3.9703e-05 deg
M 172.4611237964857 1.6148e-05 deg
tp 2458122.732844401208
(2018-Jan-04.23284440)		 8.0005e-05 TDB
period 1832.274828432983
5.02		 1.5831e-05
4.334e-08		 d
yr
n .1964770756076385 1.6976e-09 deg/d
Q 3.378379487101744 1.946e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1591  
   data-arc span      9461 days (25.90 yr)  
   first obs. used      1994-11-28  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:03:01  

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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