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18164 (2000 PA20)
Classification: Main-belt Asteroid          SPK-ID: 2018164
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08949388345163169 4.0182e-08  
a 3.035964583201046 1.7933e-08 au
q 2.76426432262877 1.3017e-07 au
i 9.395789816524529 4.769e-06 deg
node 6.999295931064979 2.2698e-05 deg
peri 323.2793151982951 3.4289e-05 deg
M 301.9555521202833 2.6709e-05 deg
tp 2459512.031281762646
(2021-Oct-24.53128176)
0.00014402 TDB
period 1932.161740377985
5.29
1.7119e-05
4.687e-08
d
yr
n .1863198056750538 1.6508e-09 deg/d
Q 3.307664843773321 1.9538e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1701  
   data-arc span      10012 days (27.41 yr)  
   first obs. used      1993-03-17  
   last obs. used      2020-08-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:24:28  

Additional Information
 Earth MOID = 1.75928 au 
 Jupiter MOID = 2.09255 au 
 T_jup = 3.215 
[ 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 13.31   n/a E2021B10  
diameter diameter 8.182 km 0.290 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.068 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.152   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18164 (2000 PA20)          Discovered 2000-Aug-01 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 PA20 = 1995 SZ53 = 1998 FQ127 = 1999 LL16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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