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213691 (2002 TA231)
Classification: Main-belt Asteroid          SPK-ID: 2213691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2403648206637715 8.0198e-08  
a 2.53507406252581 1.1483e-08 au
q 1.925731440117415 2.0736e-07 au
i 7.487908431547867 4.7004e-06 deg
node 79.38332176138401 5.085e-05 deg
peri 258.4892265517685 5.1605e-05 deg
M 196.818668411089 1.1089e-05 deg
tp 2459868.770632997656
(2022-Oct-16.27063300)
4.8655e-05 TDB
period 1474.295040594611
4.04
1.0017e-05
2.743e-08
d
yr
n .2441845018042015 1.659e-09 deg/d
Q 3.144416684934205 1.4243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      8234 days (22.54 yr)  
   first obs. used      1998-09-22  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61027  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:39:35  

Additional Information
 Earth MOID = .93159 au 
 Jupiter MOID = 2.28902 au 
 T_jup = 3.396 
[ 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 16.42   n/a MPCxxxxx  
diameter diameter 1.511 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.52155 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.194   0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

213691 (2002 TA231)          Discovered 2002-Oct-08 by NEAT at Palomar
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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