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46234 (2001 HK9)
Classification: Main-belt Asteroid          SPK-ID: 2046234
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2276017404597325 3.8307e-08  
a 2.983672660028273 1.7361e-08 au
q 2.304583569643718 1.1071e-07 au
i 9.553200956987009 3.7815e-06 deg
node 207.4628613994109 2.3213e-05 deg
peri 122.9418218997236 2.4455e-05 deg
M 173.3083809749634 1.107e-05 deg
tp 2458094.262032232166
(2017-Dec-06.76203223)
5.3007e-05 TDB
period 1882.45753933591
5.15
1.643e-05
4.498e-08
d
yr
n .1912393732540709 1.6691e-09 deg/d
Q 3.662761750412828 2.1312e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1588  
   data-arc span      8211 days (22.48 yr)  
   first obs. used      1997-10-29  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:31:32  

Additional Information
 Earth MOID = 1.31134 au 
 Jupiter MOID = 1.86042 au 
 T_jup = 3.198 
[ 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 13.5   n/a MPO365793  
diameter diameter 6.220 km 1.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.870 h n/a LCDB (Rev. 2019-August); 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 0.240   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46234 (2001 HK9)          Discovered 2001-Apr-16 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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