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249652 (1999 TY268)
Classification: Main-belt Asteroid          SPK-ID: 2249652
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08593238123215578 8.9628e-08  
a 3.129175884008143 4.6404e-08 au
q 2.860278349001087 3.0029e-07 au
i 9.233768990082069 6.4615e-06 deg
node 275.5646336852855 5.5225e-05 deg
peri 66.75787365440171 6.6703e-05 deg
M 289.4836820683444 4.1285e-05 deg
tp 2459396.532215298230
(2021-Jul-01.03221530)
0.00023666 TDB
period 2021.824191750101
5.54
4.4974e-05
1.231e-07
d
yr
n .1780570246755146 3.9607e-09 deg/d
Q 3.398073419015198 5.0392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      223  
   data-arc span      7158 days (19.60 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5259  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:41:04  

Additional Information
 Earth MOID = 1.86736 au 
 Jupiter MOID = 1.94545 au 
 T_jup = 3.188 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457398.5 (2016-Jan-11.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08588444541540617 8.9312e-08  
q 2.859032085297245 2.9817e-07 au
tp 2457384.817659405519
(2015-Dec-28.31765941)
0.0002169 TDB
node 275.5778399293105 5.5266e-05 deg
peri 68.15863171377035 6.6932e-05 deg
i 9.231121356506442 6.4584e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      223  
   data-arc span      7158 days (19.60 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5259  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:41:04  

Additional Information
 Jupiter MOID = 1.94545 au 
 T_jup = 3.188 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.976598311769931E-15 -2.639567728124767E-14 -3.651566632948498E-12 9.64221451474371E-14 -6.095907069170124E-13 3.577017221147783E-15
q -2.639567728124767E-14 8.89057450310237E-14 1.515615101717298E-11 -3.091050962222557E-13 2.535161529343574E-12 -7.683055075722508E-15
tp -3.651566632948498E-12 1.515615101717298E-11 4.704370381251441E-8 -1.372171560611134E-10 8.346610041584922E-9 1.399404347088035E-11
node 9.64221451474371E-14 -3.091050962222557E-13 -1.372171560611134E-10 3.05433894961451E-9 -3.03663924525912E-9 9.663027999958035E-11
peri -6.095907069170124E-13 2.535161529343574E-12 8.346610041584922E-9 -3.03663924525912E-9 4.479921240774844E-9 -9.292706930162078E-11
i 3.577017221147783E-15 -7.683055075722508E-15 1.399404347088035E-11 9.663027999958035E-11 -9.292706930162078E-11 4.171090768992872E-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 15.5   n/a MPO254460  
diameter diameter 4.620 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249652 (1999 TY268)          Discovered 1999-Oct-03 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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