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18351 (1990 QN5)
Classification: Main-belt Asteroid          SPK-ID: 2018351
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .17334569458434 6.8408e-08  
a 2.793708714908578 2.5837e-08 au
q 2.309431337256427 1.9264e-07 au
i 8.634241761918194 8.3981e-06 deg
node 345.1888472757464 3.5565e-05 deg
peri 40.81553833300413 4.0561e-05 deg
M 164.4718023147261 2.2983e-05 deg
tp 2456821.281847009204
(2014-Jun-12.78184701)
0.00010434 JED
period 1705.572208298043
4.67
2.3661e-05
6.478e-08
d
yr
n .2110728576887618 2.9281e-09 deg/d
Q 3.277986092560729 3.0316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1132  
   data-arc span      9363 days (25.63 yr)  
   first obs. used      1990-08-22  
   last obs. used      2016-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48349  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:29:44  

Additional Information
 Earth MOID = 1.31921 au 
 Jupiter MOID = 2.22867 au 
 T_jup = 3.289 
[ 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 13.2 mag n/a MPO358808  

18351 (1990 QN5)          Discovered 1990-Aug-29 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 QN5 = 1997 DV 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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