Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
13937 Roberthargraves (1989 PU)
Classification: Main-belt Asteroid          SPK-ID: 2013937
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2439880236449827 9.6094e-08  
a 2.540422540098128 1.7333e-08 AU
q 1.920589865316418 2.4714e-07 AU
i 29.63405899860769 1.0233e-05 deg
node 137.9479287377242 1.6595e-05 deg
peri 194.5576630638205 2.6781e-05 deg
M 87.43814611296222 2.6113e-05 deg
tp 2456641.283891913340
(2013-Dec-14.78389191)
0.00010512 JED
period 1478.963183232756
4.05
1.5136e-05
4.144e-08
d
yr
n .2434137672129894 2.4912e-09 deg/d
Q 3.160255214879836 2.1562e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      384  
   data-arc span      9298 days (25.46 yr)  
   first obs. used      1989-08-02  
   last obs. used      2015-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59677  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:38:52  

Additional Information
 Earth MOID = .916199 AU 
 T_jup = 3.226 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO266032  

13937 Roberthargraves           Discovered 1989 Aug. 2 by C. S. and E. M. Shoemaker at Palomar.
Robert Bero Hargraves (b. 1928), Princeton University professor of geosciences, is known for his research in paleomagnetism; he participated in the magnetic properties experiment on the Mars Pathfinder. His studies include impact structures in Africa and the United States.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1989 PU = 1993 OA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-06 20:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin