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20789 Hughgrant (2000 SU44)
Classification: Main-belt Asteroid          SPK-ID: 2020789
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2425292833461503 6.6406e-08  
a 2.550553730409725 1.2074e-08 au
q 1.931969762037604 1.7591e-07 au
i 9.764964120944992 5.6297e-06 deg
node 66.39628890977113 1.9243e-05 deg
peri 15.18123371691283 2.0988e-05 deg
M 299.140572514011 8.4894e-06 deg
tp 2459252.021725653037
(2021-Feb-06.52172565)
3.6083e-05 TDB
period 1487.819142826134
4.07
1.0565e-05
2.893e-08
d
yr
n .2419648932034675 1.7182e-09 deg/d
Q 3.169137698781846 1.5003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1711  
   data-arc span      25109 days (68.74 yr)  
   first obs. used      1952-01-31  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44737  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:00:40  

Additional Information
 Earth MOID = .94936 au 
 Jupiter MOID = 2.11204 au 
 T_jup = 3.379 
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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 13.3   n/a MPO302192  
diameter diameter 5.254 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.443   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20789 Hughgrant           Discovered 2000 Sept. 28 by C. W. Juels at Fountain Hills.
Hugh M. Grant (b. 1933) is a retired educator and businessman from Vancouver and a member of the Royal Astronomical Society of Canada. He recently completed construction of a roll-off roof observatory at his winter home in Fountain Hills, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 2000 SU44 = 1952 BA2 = 1989 FD1 = 1994 LE7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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