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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1541047742413517 4.689e-08  
a 2.14165406846702 9.1187e-09 au
q 1.811614951742837 1.0064e-07 au
i 1.7842259378166 4.8534e-06 deg
node 317.7044637129285 0.00015529 deg
peri 341.9426917719773 0.00015659 deg
M 64.76481027837664 1.924e-05 deg
tp 2457194.551322441218
(2015-Jun-21.05132244)
6.1367e-05 JED
period 1144.78099453208
3.13
7.3113e-06
2.002e-08
d
yr
n .3144706295086135 2.0084e-09 deg/d
Q 2.471693185191202 1.0524e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1090  
   data-arc span      10310 days (28.23 yr)  
   first obs. used      1987-09-29  
   last obs. used      2015-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51357  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:44:05  

Additional Information
 Earth MOID = .794226 au 
 Jupiter MOID = 2.7129 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 15.5 mag n/a MPO347679  

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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