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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0713143270657976 4.8437e-08  
a 2.560681651200893 1.6841e-08 au
q 2.378068362415766 1.2453e-07 au
i 16.08207355536709 7.1454e-06 deg
node 44.40375363655237 1.7946e-05 deg
peri 228.2716504294317 5.443e-05 deg
M 86.28569802635462 5.0744e-05 deg
tp 2457041.769645138663
(2015-Jan-19.26964514)
0.00021059 JED
period 1496.689842048176
4.10
1.4765e-05
4.042e-08
d
yr
n .2405307966193922 2.3729e-09 deg/d
Q 2.743294939986021 1.8042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      973  
   data-arc span      11716 days (32.08 yr)  
   first obs. used      1983-11-08  
   last obs. used      2015-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48625  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:39:34  

Additional Information
 Earth MOID = 1.38741 au 
 Jupiter MOID = 2.3112 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 13.7 mag n/a MPO319315  

18378 (1991 UX2)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro
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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