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19988 (1990 QW3)
Classification: Main-belt Asteroid          SPK-ID: 2019988
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538843448344714 5.182e-08  
a 2.141609204329424 9.6912e-09 AU
q 1.812049075029717 1.0964e-07 AU
i 1.784406414710255 5.0077e-06 deg
node 317.7078037583632 0.00018777 deg
peri 341.9637072298936 0.00018907 deg
M 236.0475272617933 2.4947e-05 deg
tp 2457194.649933973158
(2015-Jun-21.14993397)
7.9593e-05 JED
period 1144.745022796143
3.13
7.7703e-06
2.127e-08
d
yr
n .3144805112326826 2.1346e-09 deg/d
Q 2.471169333629131 1.1183e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      934  
   data-arc span      9655 days (26.43 yr)  
   first obs. used      1987-09-29  
   last obs. used      2014-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55623  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:12:28  

Additional Information
 Earth MOID = .795706 AU 
 T_jup = 3.697 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4 mag n/a MPO250410  

19988 (1990 QW3)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar (675)
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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