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18378 (1991 UX2)
Classification: Main-belt Asteroid          SPK-ID: 2018378
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07112799137666448 5.7202e-08  
a 2.560447492791864 1.8648e-08 AU
q 2.378328005604162 1.5087e-07 AU
i 16.0820265868707 7.9218e-06 deg
node 44.41408173092497 1.8027e-05 deg
peri 228.3355082651231 5.7423e-05 deg
M 350.0145074213633 5.5306e-05 deg
tp 2457042.008709418906
(2015-Jan-19.50870942)
0.00023001 JED
period 1496.484552276973
4.10
1.6349e-05
4.476e-08
d
yr
n .2405637929587998 2.6281e-09 deg/d
Q 2.742566979979566 1.9975e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      895  
   data-arc span      11192 days (30.64 yr)  
   first obs. used      1983-11-08  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49094  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:30:56  

Additional Information
 Earth MOID = 1.39035 AU 
 T_jup = 3.377 
[ 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 13.6 mag n/a MPO263511  

18378 (1991 UX2)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 UX2 = 1983 VQ3 = 1995 UV51 = 1999 VZ175 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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