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146471 (2001 RY78)
Classification: Main-belt Asteroid          SPK-ID: 2146471
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845155040771243 3.7805e-08  
a 2.742845322746635 1.2155e-08 au
q 2.236747835414457 1.0632e-07 au
i 11.09177356934492 4.0711e-06 deg
node 78.69926383483468 2.0866e-05 deg
peri 337.0078884362337 2.4887e-05 deg
M 32.20804777966632 1.1177e-05 deg
tp 2458852.056117857710
(2020-Jan-03.55611786)		 5.1508e-05 TDB
period 1659.20635540544
4.54		 1.1029e-05
3.02e-08		 d
yr
n .216971203628274 1.4422e-09 deg/d
Q 3.248942810078813 1.4397e-08 au
   Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      6766 days (18.52 yr)  
   first obs. used      2001-09-10  
   last obs. used      2020-03-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50174  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:27:29  

Additional Information
 Earth MOID = 1.25358 au 
 Jupiter MOID = 2.10564 au 
 T_jup = 3.298 
[ 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 15.0   n/a MPO502886  

146471 (2001 RY78)          Discovered 2001-Sep-10 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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