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268520 (2005 YR203)
Classification: Main-belt Asteroid          SPK-ID: 2268520
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06190610513121371 4.9644e-08  
a 2.899860157574855 3.3343e-08 au
q 2.720341109794208 1.4642e-07 au
i 4.835238214406488 5.6772e-06 deg
node 296.1513176691702 5.9668e-05 deg
peri 272.9470963172128 7.7539e-05 deg
M 245.0801734206824 5.2604e-05 deg
tp 2459576.279861126690
(2021-Dec-27.77986113)
0.00026767 TDB
period 1803.698771356422
4.94
3.1109e-05
8.517e-08
d
yr
n .1995898681736484 3.4424e-09 deg/d
Q 3.079379205355502 3.5408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      185  
   data-arc span      5995 days (16.41 yr)  
   first obs. used      2003-07-05  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60523  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 17:26:50  

Additional Information
 Earth MOID = 1.72042 au 
 Jupiter MOID = 1.92495 au 
 T_jup = 3.279 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457222.5 (2015-Jul-19.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06339033132437333 4.9416e-08  
q 2.714255278022101 1.4569e-07 au
tp 2457779.768933695488
(2017-Jan-26.26893370)
0.00025165 TDB
node 296.2961417281069 5.9596e-05 deg
peri 274.2917900996341 7.6924e-05 deg
i 4.839905269550528 5.6809e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      185  
   data-arc span      5995 days (16.41 yr)  
   first obs. used      2003-07-05  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60523  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 17:26:50  

Additional Information
 Jupiter MOID = 1.92495 au 
 T_jup = 3.279 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.441895212229613E-15 -7.0336459359391E-15 -1.054007711246019E-12 4.502521443534332E-15 -1.214735950944816E-13 1.900119767850385E-15
q -7.0336459359391E-15 2.122465050962913E-14 5.555667139153821E-12 -1.47646181754861E-14 7.838996323258004E-13 -4.243476801328799E-15
tp -1.054007711246019E-12 5.555667139153821E-12 6.332770401794158E-8 -3.465327596328717E-11 1.225394172528979E-8 6.608224550706967E-12
node 4.502521443534332E-15 -1.47646181754861E-14 -3.465327596328717E-11 3.551629681628553E-9 -3.545030814394356E-9 -1.078674629545908E-11
peri -1.214735950944816E-13 7.838996323258004E-13 1.225394172528979E-8 -3.545030814394356E-9 5.917306207522646E-9 1.200460880739445E-11
i 1.900119767850385E-15 -4.243476801328799E-15 6.608224550706967E-12 -1.078674629545908E-11 1.200460880739445E-11 3.227240126719265E-11

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 16.5   n/a MPO503221  

268520 (2005 YR203)          Discovered 2005-Dec-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

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