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JPL Small-Body Database Browser
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48164 (2001 HJ9)
Classification: Main-belt Asteroid          SPK-ID: 2048164
[ 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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .171211595240442 4.2629e-08  
a 3.06580584402523 2.1874e-08 au
q 2.540904334772201 1.322e-07 au
i 13.76072470044943 5.5173e-06 deg
node 52.0768358904455 2.0209e-05 deg
peri 278.7801680496561 2.5327e-05 deg
M 115.7672109365199 1.555e-05 deg
tp 2458369.980578967063
(2018-Sep-08.48057897)		 8.3822e-05 TDB
period 1960.719185817856
5.37		 2.0984e-05
5.745e-08		 d
yr
n .183606098519323 1.965e-09 deg/d
Q 3.59070735327826 2.5619e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1020  
   data-arc span      9919 days (27.16 yr)  
   first obs. used      1992-11-24  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54018  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:01:11  

Additional Information
 Earth MOID = 1.57674 au 
 Jupiter MOID = 1.98373 au 
 T_jup = 3.166 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456786.5 (2014-May-09.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739936760875569 4.2992e-08  
q 2.529178546208019 1.3338e-07 au
tp 2456399.303401259930
(2013-Apr-16.80340126)		 8.0659e-05 TDB
node 52.48615736616791 2.0315e-05 deg
peri 276.7158899397253 2.5063e-05 deg
i 13.73347422967123 5.505e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1020  
   data-arc span      9919 days (27.16 yr)  
   first obs. used      1992-11-24  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54018  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:01:11  

Additional Information
 Jupiter MOID = 1.98373 au 
 T_jup = 3.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.848317585702455E-15 -5.683105731609661E-15 6.563676072656904E-13 -1.509605021680553E-15 1.262021280887944E-13 -3.383295500188377E-15
q -5.683105731609661E-15 1.77899609179729E-14 -2.162752011667753E-12 4.315600596393585E-15 -4.015091548044559E-13 1.301410928348226E-14
tp 6.563676072656904E-13 -2.162752011667753E-12 6.505820652133033E-9 1.816079728502992E-12 1.21200166805767E-9 9.629559258513074E-13
node -1.509605021680553E-15 4.315600596393585E-15 1.816079728502992E-12 4.127061412586309E-10 -4.001993154528084E-10 -2.156699441325394E-11
peri 1.262021280887944E-13 -4.015091548044559E-13 1.21200166805767E-9 -4.001993154528084E-10 6.28169115497666E-10 2.090281563098873E-11
i -3.383295500188377E-15 1.301410928348226E-14 9.629559258513074E-13 -2.156699441325394E-11 2.090281563098873E-11 3.030515472502913E-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 14.0   n/a MPO459182  
diameter diameter 8.566 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48164 (2001 HJ9)          Discovered 2001-Apr-16 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HJ9 = 1999 BM18 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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