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19987 (1990 QJ3)
Classification: Main-belt Asteroid          SPK-ID: 2019987
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516523565771753 3.1757e-08  
a 2.904702670433707 1.1751e-08 au
q 2.464197665306421 9.4222e-08 au
i 12.60172609457273 4.8091e-06 deg
node 348.7515521241295 1.4889e-05 deg
peri 72.8225984383633 2.4517e-05 deg
M 343.4360564610819 1.6727e-05 deg
tp 2459283.697867272115
(2021-Mar-10.19786727)
8.3975e-05 TDB
period 1808.218685821348
4.95
1.0972e-05
3.004e-08
d
yr
n .1990909632904701 1.2081e-09 deg/d
Q 3.345207675560993 1.3533e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1986  
   data-arc span      11158 days (30.55 yr)  
   first obs. used      1990-08-22  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43545  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:10:47  

Additional Information
 Earth MOID = 1.51016 au 
 Jupiter MOID = 2.12518 au 
 T_jup = 3.233 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.35   n/a E2021B10  
diameter diameter 6.132 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.270   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19987 (1990 QJ3)          Discovered 1990-Aug-28 by Holt, H. E. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 QJ3 = 1995 UE25 = 1998 FU112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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