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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1515520871259079 3.7661e-08  
a 2.904632292219734 1.7166e-08 au
q 2.464429206000523 1.0672e-07 au
i 12.60159281293615 6.3789e-06 deg
node 348.75161419952 1.8672e-05 deg
peri 72.78735927123758 3.1834e-05 deg
M 303.6377245214621 2.3605e-05 deg
tp 2459283.587821526705
(2021-Mar-10.08782153)		 0.00011904 TDB
period 1808.152969062092
4.95		 1.6029e-05
4.389e-08		 d
yr
n .1990981991898262 1.765e-09 deg/d
Q 3.344835378438944 1.9768e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1345  
   data-arc span      10212 days (27.96 yr)  
   first obs. used      1990-08-22  
   last obs. used      2018-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48071  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 17:57:57  

Additional Information
 Earth MOID = 1.51107 au 
 Jupiter MOID = 2.12574 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 13.4   n/a MPO400201  
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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