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19988 (1990 QW3)
Classification: Main-belt Asteroid          SPK-ID: 2019988
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538272770507221 3.9948e-08  
a 2.141523757365873 6.6459e-09 au
q 1.812098989030849 8.5793e-08 au
i 1.783711302767553 3.8976e-06 deg
node 317.6294483156233 0.00011034 deg
peri 342.0267021278261 0.00011103 deg
M 270.7534911972653 1.3318e-05 deg
tp 2459484.273284727304
(2021-Sep-26.77328473)
4.2665e-05 TDB
period 1144.676513090662
3.13
5.3285e-06
1.459e-08
d
yr
n .3144993331155097 1.464e-09 deg/d
Q 2.470948525700897 7.6682e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1454  
   data-arc span      11891 days (32.56 yr)  
   first obs. used      1987-09-29  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:07:54  

Additional Information
 Earth MOID = .794566 au 
 Jupiter MOID = 2.72168 au 
 T_jup = 3.697 
[ 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 15.48   n/a E2021B10  
diameter diameter 1.999 km 0.553 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.335   0.139 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19988 (1990 QW3)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 QW3 = 1987 SA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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