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20411 (1998 QJ69)
Classification: Main-belt Asteroid          SPK-ID: 2020411
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04912136273437961 3.6644e-08  
a 3.141998230625307 1.8513e-08 au
q 2.987658995827983 1.1047e-07 au
i 15.46089943233158 3.6654e-06 deg
node 210.0381206737122 1.42e-05 deg
peri 22.35756521973185 4.7688e-05 deg
M 99.66303100020518 4.3559e-05 deg
tp 2458637.330765879988
(2019-Jun-02.83076588)
0.00024741 TDB
period 2034.264082162894
5.57
1.7979e-05
4.922e-08
d
yr
n .1769681739733794 1.5641e-09 deg/d
Q 3.296337465422632 1.9423e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      10037 days (27.48 yr)  
   first obs. used      1993-07-22  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48237  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:19:50  

Additional Information
 Earth MOID = 1.98248 au 
 Jupiter MOID = 1.68088 au 
 T_jup = 3.152 
[ 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 13.4   n/a MPO492967  
diameter diameter 11.008 km 0.388 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.076   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20411 (1998 QJ69)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 QJ69 = 1999 PD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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