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18350 (1990 QJ2)
Classification: Main-belt Asteroid          SPK-ID: 2018350
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600899020545951 5.5415e-08  
a 2.191621168705269 1.1505e-08 AU
q 1.840764750466465 1.1891e-07 AU
i 1.546874175161181 5.6223e-06 deg
node 34.14231391336669 0.00019855 deg
peri 1.07003601706724 0.00019929 deg
M 135.2042207321386 1.7353e-05 deg
tp 2456555.423765211010
(2013-Sep-19.92376521)
5.7143e-05 JED
period 1185.077238390901
3.24
9.3317e-06
2.555e-08
d
yr
n .3037776681027208 2.392e-09 deg/d
Q 2.542477586944073 1.3347e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      8917 days (24.41 yr)  
   first obs. used      1990-08-22  
   last obs. used      2015-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5377  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:51:17  

Additional Information
 Earth MOID = .847131 AU 
 T_jup = 3.655 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6 mag n/a MPO279707  

18350 (1990 QJ2)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar (675)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QJ2 = 1995 CJ7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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