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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2337595378982475 3.3085e-08  
a 2.370783615412098 7.9985e-09 au
q 1.816590333016629 8.0131e-08 au
i 3.404676568322355 3.9094e-06 deg
node 23.69658617521236 5.9077e-05 deg
peri 17.70434605031821 5.9643e-05 deg
M 321.3477252272161 1.0771e-05 deg
tp 2459343.655770910202
(2021-May-09.15577091)
4.0388e-05 TDB
period 1333.325860654409
3.65
6.7475e-06
1.847e-08
d
yr
n .2700015132259631 1.3664e-09 deg/d
Q 2.924976897807566 9.8682e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1301  
   data-arc span      25247 days (69.12 yr)  
   first obs. used      1951-11-29  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5119  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:10:20  

Additional Information
 Earth MOID = .824244 au 
 Jupiter MOID = 2.49589 au 
 T_jup = 3.505 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.03   n/a E2021B10  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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