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8553 Bradsmith (1995 HG)
Classification: Main-belt Asteroid          SPK-ID: 2008553
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 .126169626236923 3.2617e-08  
a 2.247993559928723 7.2981e-09 au
q 1.964365052689506 7.3605e-08 au
i 5.447487690183362 3.7376e-06 deg
node 54.20694266338629 4.0226e-05 deg
peri 234.46300706063 4.3457e-05 deg
M 99.47674003507345 1.5786e-05 deg
tp 2458660.318991198231
5.4149e-05 TDB
period 1231.093450845475
n .2924229673651205 1.424e-09 deg/d
Q 2.531622067167939 8.2189e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2108  
   data-arc span      11262 days (30.83 yr)  
   first obs. used      1989-09-30  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48645  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:00:16  

Additional Information
 Earth MOID = .95404 au 
 Jupiter MOID = 2.60774 au 
 T_jup = 3.613 
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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 13.9   n/a MPO448998  

8553 Bradsmith           Discovered 1995 Apr. 20 by K. Endate and K. Watanabe at Kitami.
Bradford A. Smith (b. 1931) is an American astronomer who served as the principal investigator of the Imaging Experiment Team of the Voyager missions to the outer planets and has also contributed to many other NASA missions. He has also served as president of IAU Commission 16.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2188-Aug-21 13:38 < 00:01 Juno 0.0331644383472651 0.0331472582449451 0.0331816257842304 8.54190090860595 8.54190086566033 2520444.067895800 0.417094541670796 1157.19767324996 27.0388696372993 42.2560223686551 123396.213104018 T 30 CATAB v2.0f-lin.ifort 2020-Aug-25 00:00:30 2020-Aug-25 00:00

Alternate Designations
 1995 HG = 1991 CP6 = 1996 TK64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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