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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 ]

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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1713616128119396 4.1382e-08  
a 3.065794958901452 1.9505e-08 au
q 2.540435390193385 1.2611e-07 au
i 13.75969320176996 3.8119e-06 deg
node 52.05577972766259 1.9718e-05 deg
peri 278.8855306655191 2.2822e-05 deg
M 188.3516447517797 1.4454e-05 deg
tp 2460331.367863751313
(2024-Jan-21.86786375)
8.3478e-05 TDB
period 1960.708743545983
5.37
1.8712e-05
5.123e-08
d
yr
n .1836070763620569 1.7522e-09 deg/d
Q 3.591154527609519 2.2848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1225  
   data-arc span      10398 days (28.47 yr)  
   first obs. used      1992-11-24  
   last obs. used      2021-05-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51301  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:33:56  

Additional Information
 Earth MOID = 1.57555 au 
 Jupiter MOID = 1.98285 au 
 T_jup = 3.166 
[ 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 14.02   n/a MPCxxxxx  
diameter diameter 8.566 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 86.0116 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

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