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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1539950052302727 4.8517e-08  
a 2.141444343987487 9.6257e-09 AU
q 1.811672611034796 1.0349e-07 AU
i 1.78437055398513 4.9076e-06 deg
node 317.7069641455323 0.00016932 deg
peri 341.990944684421 0.00017064 deg
M 298.930981514519 2.217e-05 deg
tp 2457194.667730056468
(2015-Jun-21.16773006)
7.0523e-05 JED
period 1144.61284222125
3.13
7.7175e-06
2.113e-08
d
yr
n .3145168276300129 2.1206e-09 deg/d
Q 2.471216076940178 1.1108e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      10131 days (27.74 yr)  
   first obs. used      1987-09-29  
   last obs. used      2015-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52659  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:26:13  

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
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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