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48178 (2001 HU31)
Classification: Main-belt Asteroid          SPK-ID: 2048178
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03335619926160701 4.497e-08  
a 2.692025974120765 1.6709e-08 au
q 2.602230219310571 1.2114e-07 au
i 21.30537940889871 5.254e-06 deg
node 229.3743832386766 1.1231e-05 deg
peri 231.0919266095942 6.9543e-05 deg
M 248.9894889443019 6.9136e-05 deg
tp 2459497.983747224176
(2021-Oct-10.48374722)
0.00031056 TDB
period 1613.308030902092
4.42
1.502e-05
4.112e-08
d
yr
n .2231439955076054 2.0775e-09 deg/d
Q 2.781821728930958 1.7266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      942  
   data-arc span      7598 days (20.80 yr)  
   first obs. used      1998-10-29  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48511  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:14:43  

Additional Information
 Earth MOID = 1.63858 au 
 Jupiter MOID = 2.3525 au 
 T_jup = 3.272 
[ 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 14.1   n/a MPO436119  
diameter diameter 4.256 km 0.333 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.245   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48178 (2001 HU31)          Discovered 2001-Apr-28 by Yeung, W. K. Y. at Desert Beaver
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HU31 = 1999 AZ29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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