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14878 (1990 WE9)
Classification: Main-belt Asteroid          SPK-ID: 2014878
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1859073074336293 3.4266e-08  
a 2.422530502515049 6.1941e-09 au
q 1.972164379616639 8.3071e-08 au
i 2.702109114123621 3.6486e-06 deg
node 155.4237314779726 6.4666e-05 deg
peri 198.2331173601492 6.5149e-05 deg
M 32.93060997451752 7.1281e-06 deg
tp 2459074.520586430095
(2020-Aug-13.02058643)		 2.7237e-05 TDB
period 1377.216787671429
3.77		 5.282e-06
1.446e-08		 d
yr
n .2613967555599442 1.0025e-09 deg/d
Q 2.872896625413458 7.3456e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1788  
   data-arc span      12569 days (34.41 yr)  
   first obs. used      1986-09-14  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50487  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:41:16  

Additional Information
 Earth MOID = .96549 au 
 Jupiter MOID = 2.56374 au 
 T_jup = 3.487 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.97   n/a E2021B10  
diameter diameter 6.331 km 0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.064   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

14878 (1990 WE9)          Discovered 1990-Nov-19 by Elst, E. W. at La Silla
Reference: 20000523/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 WE9 = 1986 RJ16 = 1986 TW14 = 1992 ET25 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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