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4517 Ralpharvey (1975 SV)
Classification: Main-belt Asteroid          SPK-ID: 2004517
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1743874212758431 3.8816e-08  
a 2.157464884987042 7.5816e-09 au
q 1.781230147200968 8.3746e-08 au
i 4.195027493364207 3.6494e-06 deg
node 32.08564201048702 5.5932e-05 deg
peri 284.5216562985187 5.6932e-05 deg
M 74.62511840145915 9.6384e-06 deg
tp 2458760.563365394834
3.1016e-05 TDB
period 1157.481425934606
n .3110201096396157 1.6394e-09 deg/d
Q 2.533699622773116 8.9037e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2703  
   data-arc span      17816 days (48.78 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:15:05  

Additional Information
 Earth MOID = .773681 au 
 Jupiter MOID = 2.7535 au 
 T_jup = 3.676 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO337289  
diameter diameter 3.445 km 0.430 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 3.600 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2014) Observatoire de Geneve web site,]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Owings, L.E. (2018) Minor Planet Bull. 45, 227-231.]
geometric albedo albedo 0.959   0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

4517 Ralpharvey           Discovered 1975 Sept. 30 by S. J. Bus at Palomar.
An assistant professor at Case Western University, Ralph Harvey (b. 1960) leads the Antarctic Search for Meteorites, a program that has provided invaluable clues to the physical and chemical history of the solar system. His research interests focus on igneous processes that formed the martian meteorites.
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

Alternate Designations
 1975 SV = 1975 VJ2 = 1977 DY4 = 1987 HZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-May-30 19:49 UT
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