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72857 (2001 HL46)
Classification: Main-belt Asteroid          SPK-ID: 2072857
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07146248273962665 4.0778e-08  
a 3.122563028023918 2.3781e-08 au
q 2.899416921530363 1.2512e-07 au
i 3.196896703284884 4.3804e-06 deg
node 42.71374474080847 7.7735e-05 deg
peri 165.6580210611804 8.348e-05 deg
M 228.644542232596 3.2221e-05 deg
tp 2460131.878398102330
(2023-Jul-06.37839810)
0.00018352 TDB
period 2015.418527836257
5.52
2.3024e-05
6.304e-08
d
yr
n .1786229485478107 2.0405e-09 deg/d
Q 3.345709134517474 2.548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      10299 days (28.20 yr)  
   first obs. used      1992-09-26  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57318  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:04:26  

Additional Information
 Earth MOID = 1.895 au 
 Jupiter MOID = 1.61132 au 
 T_jup = 3.209 
[ 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 15.25   n/a MPCxxxxx  
diameter diameter 6.782 km 0.464 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72857 (2001 HL46)          Discovered 2001-Apr-18 by Spacewatch at Kitt Peak
Reference: 20031109/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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