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18468 (1995 UE8)
Classification: Main-belt Asteroid          SPK-ID: 2018468
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06084746384070929 5.6568e-08  
a 2.806986304039448 1.4318e-08 au
q 2.636188306403041 1.6027e-07 au
i 8.311590929073468 5.8385e-06 deg
node 35.55299265143965 3.1033e-05 deg
peri 171.1304803941271 4.651e-05 deg
M 324.0058291174431 3.5836e-05 deg
tp 2459372.246755180539
(2021-Jun-06.74675518)
0.00017121 TDB
period 1717.745689065359
4.70
1.3143e-05
3.598e-08
d
yr
n .2095770068244964 1.6035e-09 deg/d
Q 2.977784301675854 1.5189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      12050 days (32.99 yr)  
   first obs. used      1988-03-18  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49609  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:29:45  

Additional Information
 Earth MOID = 1.63043 au 
 Jupiter MOID = 1.97985 au 
 T_jup = 3.305 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.93   n/a E2021B10  
diameter diameter 7.056 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.09056 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.141   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18468 (1995 UE8)          Discovered 1995-Oct-27 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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