Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
4517 Ralpharvey (1975 SV)
Classification: Main-belt Asteroid          SPK-ID: 2004517
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.

Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1743616567704191 2.6262e-08  
a 2.157833266376392 6.1027e-09 au
q 1.781589883016679 5.6618e-08 au
i 4.194694275988346 7.244e-07 deg
node 32.08073414636622 2.0639e-05 deg
peri 284.5833587577045 1.9433e-05 deg
M 136.757742240284 5.3683e-06 deg
tp 2458760.680303373633
1.6555e-05 TDB
period 1157.777893900123
n .310940467853721 1.3191e-09 deg/d
Q 2.534076649736105 7.1668e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3178  
   data-arc span      18258 days (49.99 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40663  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:41:02  

Additional Information
 Earth MOID = .772084 au 
 Jupiter MOID = 2.75293 au 
 T_jup = 3.676 
[ 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 13.45   n/a MPCxxxxx  
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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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 2021-May-18 12:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin