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249955 (2001 TJ238)
Classification: Main-belt Asteroid          SPK-ID: 2249955
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1879133922680726 4.6646e-08  
a 2.734687255082008 1.8503e-08 au
q 2.220802896187284 1.312e-07 au
i 9.573769891419616 4.8918e-06 deg
node 71.00729704294616 2.9746e-05 deg
peri 274.9475516098153 3.3067e-05 deg
M 329.8353519522235 1.2651e-05 deg
tp 2458738.906245710079
(2019-Sep-12.40624571)
5.8043e-05 TDB
period 1651.809375554812
4.52
1.6764e-05
4.59e-08
d
yr
n .2179428239890469 2.2119e-09 deg/d
Q 3.248571613976733 2.198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      311  
   data-arc span      6603 days (18.08 yr)  
   first obs. used      2001-10-15  
   last obs. used      2019-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56256  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:46:34  

Additional Information
 Earth MOID = 1.23818 au 
 Jupiter MOID = 2.24774 au 
 T_jup = 3.307 
[ 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 16.1   n/a MPO450109  
diameter diameter 3.508 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249955 (2001 TJ238)          Discovered 2001-Oct-15 by NEAT at Palomar
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

Alternate Designations
 2001 TJ238 = 2006 VT70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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