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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456941.5 (2014-Oct-11.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2248496844394761 3.787e-08  
q 2.31853724544187 1.0866e-07 au
tp 2456199.686501178528
(2012-Sep-29.18650118)
4.586e-05 TDB
node 208.0022927518961 2.3418e-05 deg
peri 121.3421852888646 2.4633e-05 deg
i 9.492583996772263 3.7639e-06 deg
  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
 Jupiter MOID = 1.86042 au 
 T_jup = 3.198 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.434119374130288E-15 -4.084484015767763E-15 2.621187786074493E-13 7.058934826941323E-15 4.489905869531416E-14 -4.665867236963149E-16
q -4.084484015767763E-15 1.180624848366565E-14 -5.557821523379614E-13 -1.581657713873027E-14 -8.776079952513896E-14 -3.365196058478074E-16
tp 2.621187786074493E-13 -5.557821523379614E-13 2.103117016715204E-9 1.632629110687175E-11 3.738972938736839E-10 -1.042004273394409E-12
node 7.058934826941323E-15 -1.581657713873027E-14 1.632629110687175E-11 5.484070621771945E-10 -5.376272914767911E-10 -1.42027875920881E-11
peri 4.489905869531416E-14 -8.776079952513896E-14 3.738972938736839E-10 -5.376272914767911E-10 6.067622082063624E-10 1.363459658484451E-11
i -4.665867236963149E-16 -3.365196058478074E-16 -1.042004273394409E-12 -1.42027875920881E-11 1.363459658484451E-11 1.416662476135842E-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 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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