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181057 (2005 PT18)
Classification: Main-belt Asteroid          SPK-ID: 2181057
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .283027210029911 5.9888e-08  
a 3.091316969091103 2.2901e-08 au
q 2.216390152011127 1.9063e-07 au
i 13.63086870313845 6.8387e-06 deg
node 308.4376163055719 2.5195e-05 deg
peri 17.17889407801109 2.7123e-05 deg
M 347.6582167580232 1.114e-05 deg
tp 2459464.559561639128
(2021-Sep-07.05956164)
6.1815e-05 TDB
period 1985.243275603143
5.44
2.206e-05
6.04e-08
d
yr
n .1813379772766777 2.015e-09 deg/d
Q 3.966243786171078 2.9382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      7548 days (20.67 yr)  
   first obs. used      2000-11-06  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56518  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 15:21:27  

Additional Information
 Earth MOID = 1.20705 au 
 Jupiter MOID = 1.40292 au 
 T_jup = 3.120 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457303.5 (2015-Oct-08.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2813813156820043 5.995e-08  
q 2.221627382739992 1.9031e-07 au
tp 2457481.298613316347
(2016-Apr-02.79861332)
5.4169e-05 TDB
node 308.4460568986854 2.5205e-05 deg
peri 17.38193902404844 2.7159e-05 deg
i 13.62410019809747 6.8352e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      7548 days (20.67 yr)  
   first obs. used      2000-11-06  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56518  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 15:21:27  

Additional Information
 Jupiter MOID = 1.40292 au 
 T_jup = 3.120 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.593954745052138E-15 -1.13684910650125E-14 2.265797158596882E-13 -7.983654698614184E-15 -3.199710960308977E-14 -7.598382989232702E-15
q -1.13684910650125E-14 3.62171718439978E-14 -5.387604942578814E-13 2.721284099699397E-14 1.258325862780514E-13 2.559526246090433E-14
tp 2.265797158596882E-13 -5.387604942578814E-13 2.934262407343845E-9 -5.787153846519978E-12 5.8530165901769E-10 -7.446687438133293E-12
node -7.983654698614184E-15 2.721284099699397E-14 -5.787153846519978E-12 6.353067361715319E-10 -6.170034174827796E-10 1.458713151063092E-11
peri -3.199710960308977E-14 1.258325862780514E-13 5.8530165901769E-10 -6.170034174827796E-10 7.376151381141515E-10 -1.547029214622977E-11
i -7.598382989232702E-15 2.559526246090433E-14 -7.446687438133293E-12 1.458713151063092E-11 -1.547029214622977E-11 4.671989775051394E-11

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 14.9   n/a MPO396423  
diameter diameter 2.732 km 0.593 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.285   0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181057 (2005 PT18)          Discovered 2005-Aug-09 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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