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JPL Small-Body Database Browser
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19784 (2000 QJ81)
Classification: Outer Main-belt Asteroid          SPK-ID: 2019784
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06099532618484207 4.3126e-08  
a 3.208594345898887 2.4499e-08 au
q 3.012885087175945 1.3827e-07 au
i 8.634560060431641 4.8376e-06 deg
node 165.5031372596577 2.9121e-05 deg
peri 49.33953874719899 4.5804e-05 deg
M 278.5320493818179 3.5892e-05 deg
tp 2459475.567081698454
(2021-Sep-18.06708170)
0.00021043 TDB
period 2099.281350687055
5.75
2.4043e-05
6.583e-08
d
yr
n .1714872567615479 1.9641e-09 deg/d
Q 3.40430360462183 2.5993e-08 au
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      9278 days (25.40 yr)  
   first obs. used      1994-09-08  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58963  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:55:47  

Additional Information
 Earth MOID = 2.01651 au 
 Jupiter MOID = 1.57766 au 
 T_jup = 3.172 
[ 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 14.1   n/a MPO426000  
diameter diameter 5.376 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.121   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19784 (2000 QJ81)          Discovered 2000-Aug-24 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 QJ81 = 1998 FE120 = 1999 ND45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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