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11257 Rodionta (1978 TP2)
Classification: Main-belt Asteroid          SPK-ID: 2011257
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1523372668721278 3.5343e-08  
a 2.314787676397181 6.2407e-09 au
q 1.962159248385551 8.3433e-08 au
i 4.307647109492214 4.697e-06 deg
node 159.8832147818208 3.86e-05 deg
peri 246.8245559171119 4.1525e-05 deg
M 279.1709199949114 1.5924e-05 deg
tp 2459289.322022045330
(2021-Mar-15.82202205)
5.7225e-05 TDB
period 1286.367826155797
3.52
5.2021e-06
1.424e-08
d
yr
n .2798577457241215 1.1318e-09 deg/d
Q 2.667416104408812 7.1914e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1831  
   data-arc span      24547 days (67.21 yr)  
   first obs. used      1953-08-15  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45197  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:00:43  

Additional Information
 Earth MOID = .97625 au 
 Jupiter MOID = 2.71099 au 
 T_jup = 3.563 
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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 14.6   n/a MPO337353  
diameter diameter 6.439 km 0.314 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.068   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

11257 Rodionta           Discovered 1978 Oct. 3 by N. S. Chernykh at the Crimean Astrophysical Observatory.
Tatiana Vladimirovna Rodionova (b. 1964) is an engineer in Orenburg, wife of Igor' Victorovich Rodionov, building engineer, and the discoverer's friend.
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

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Alternate Designations
 1978 TP2 = 1971 UT2 = 1978 VF12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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