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 ]  
12301 Eotvos (1991 RR12)
Classification: Main-belt Asteroid          SPK-ID: 2012301
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .235169604922708 5.0237e-08  
a 2.370702508075734 1.308e-08 AU
q 1.813185335862291 1.223e-07 AU
i 3.407750137283366 6.0863e-06 deg
node 23.82079335304381 9.0503e-05 deg
peri 17.78047196144502 9.1502e-05 deg
M 86.94067267563132 1.342e-05 deg
tp 2456678.515837174937
(2014-Jan-21.01583717)
4.859e-05 JED
period 1333.257439236634
3.65
1.1034e-05
3.021e-08
d
yr
n .2700153694294183 2.2347e-09 deg/d
Q 2.928219680289178 1.6157e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      796  
   data-arc span      23042 days (63.09 yr)  
   first obs. used      1951-11-29  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52246  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:15:32  

Additional Information
 Earth MOID = .821557 AU 
 T_jup = 3.505 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO270246  

12301 Eötvös           Discovered 1991 Sept. 4 by E. W. Elst at the European Southern Observatory.
Loránd Eötvös (1848-1919) was a Hungarian physicist who played a leading part in Hungarian science for almost half a century. He is well known from his torsion-balance experiments, improving the limits on any deviation from the proportionality of inertial and gravitational masses.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

[ show close-approach data ]
Alternate Designations
 1991 RR12 = 1984 UB1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Feb-01 04:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin