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4248 Ranald (1984 HX)
Classification: Main-belt Asteroid          SPK-ID: 2004248
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1033553973471858 4.1336e-08  
a 2.304505845368276 1.0468e-08 au
q 2.066322728031325 9.3891e-08 au
i 5.824390175777276 5.4498e-06 deg
node 305.695450145978 4.9847e-05 deg
peri 118.3940763610727 5.8109e-05 deg
M 154.5633152858802 2.941e-05 deg
tp 2458051.883239099135
(2017-Oct-25.38323910)
0.00010384 TDB
period 1277.806661684319
3.50
8.7068e-06
2.384e-08
d
yr
n .2817327619230535 1.9197e-09 deg/d
Q 2.542688962705226 1.155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      14860 days (40.68 yr)  
   first obs. used      1978-09-01  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5105  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:19:26  

Additional Information
 Earth MOID = 1.08711 au 
 Jupiter MOID = 2.69735 au 
 T_jup = 3.575 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO270213  
diameter diameter 4.136 km 0.501 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.259   0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4248 Ranald           Discovered 1984 Apr. 23 by A. C. Gilmore and P. M. Kilmartin at Lake Tekapo.
The orbit programs constructed by Ranald McIntosh (b. 1933) enabled the discoverers to follow many of the new minor planets they found in the 1980s. He maintains the database for the Variable Star Section of the Royal Astronomical Society of New Zealand.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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