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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1539950325382103 5.1852e-08  
a 2.141444348760703 1.0147e-08 AU
q 1.811672556594532 1.0973e-07 AU
i 1.784370156935049 5.0785e-06 deg
node 317.7069465543248 0.00018198 deg
peri 341.9909779347014 0.00018347 deg
M 298.930961524463 2.591e-05 deg
tp 2457194.667794263645
(2015-Jun-21.16779426)
8.2636e-05 JED
period 1144.612846048213
3.13
8.1357e-06
2.227e-08
d
yr
n .3145168265784397 2.2355e-09 deg/d
Q 2.471216140926875 1.171e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      940  
   data-arc span      9702 days (26.56 yr)  
   first obs. used      1987-09-29  
   last obs. used      2014-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5256  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:35:14  

Additional Information
 Earth MOID = .797267 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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