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171429 Hunstead (2007 RD5)
Classification: Main-belt Asteroid          SPK-ID: 2171429
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0901834331328448 6.1476e-08  
a 3.118534840127205 3.6038e-08 au
q 2.837294661900146 1.9658e-07 au
i 15.53775569296119 6.4155e-06 deg
node 20.3952153774607 2.2715e-05 deg
peri 294.4808759789524 4.226e-05 deg
M 131.975814938842 3.5939e-05 deg
tp 2458263.077848960294
(2018-May-24.57784896)
0.00020215 TDB
period 2011.519872010752
5.51
3.4868e-05
9.546e-08
d
yr
n .1789691491539367 3.1023e-09 deg/d
Q 3.399775018354264 3.9288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      270  
   data-arc span      7164 days (19.61 yr)  
   first obs. used      2000-03-27  
   last obs. used      2019-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55179  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 14:28:19  

Additional Information
 Earth MOID = 1.86764 au 
 Jupiter MOID = 1.95505 au 
 T_jup = 3.154 
[ 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 15.3   n/a MPO454173  
diameter diameter 5.587 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

171429 Hunstead           Discovered 2007 Sept. 1 by K. Sárneczky and L. Kiss at Siding Spring.
Richard (Dick) W. Hunstead (b. 1943) is an Australian astronomer who has spent most of his career in Sydney. His primary research interest is the high-redshift universe, including quasars, high-redshift radio galaxies, clusters of galaxies and giant radio galaxies. He is also renowned as an enthusiastic teacher.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080122/MPCPages.arcLast Updated: 2008-03-05

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Alternate Designations
 2007 RD5 = 2000 FL65 = 2002 TB195 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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