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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457246.5 (2015-Aug-12.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1545469071029569 3.2423e-08  
q 2.47519980412961 9.4727e-08 au
tp 2458123.837041531263
(2018-Jan-05.33704153)
7.9403e-05 TDB
node 128.8825730195726 3.6571e-05 deg
peri 129.7606657687331 3.9562e-05 deg
i 7.308261787597087 3.5171e-06 deg
  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
 Jupiter MOID = 1.73257 au 
 T_jup = 3.247 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.051280848406524E-15 -3.036942570462539E-15 -6.695495670295456E-13 1.403784356875823E-14 -1.500826940990704E-13 9.665578353713703E-16
q -3.036942570462539E-15 8.973147333830797E-15 2.225384148608979E-12 -4.114876998395676E-14 4.692232623458784E-13 -2.546907014848599E-15
tp -6.695495670295456E-13 2.225384148608979E-12 6.304875810964666E-9 -3.686184860157181E-11 1.22993318440286E-9 4.192934189073661E-13
node 1.403784356875823E-14 -4.114876998395676E-14 -3.686184860157181E-11 1.337431751283047E-9 -1.333337128825063E-9 2.590676205613957E-11
peri -1.500826940990704E-13 4.692232623458784E-13 1.22993318440286E-9 -1.333337128825063E-9 1.565188987254142E-9 -2.56539812731432E-11
i 9.665578353713703E-16 -2.546907014848599E-15 4.192934189073661E-13 2.590676205613957E-11 -2.56539812731432E-11 1.237017328423751E-11

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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