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70538 (1999 TD122)
Classification: Main-belt Asteroid          SPK-ID: 2070538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817957160898263 3.53e-08  
a 2.57742146973414 9.956e-09 au
q 2.10885728797853 9.043e-08 au
i 6.732512176594454 4.5851e-06 deg
node .1432139790313311 3.168e-05 deg
peri 270.4674316697225 3.3848e-05 deg
M 83.89223271776598 1.329e-05 deg
tp 2458648.294736645071
(2019-Jun-13.79473665)
5.5047e-05 TDB
period 1511.390157350327
4.14
8.7572e-06
2.398e-08
d
yr
n .2381913090072845 1.3801e-09 deg/d
Q 3.045985651489751 1.1766e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2039  
   data-arc span      7717 days (21.13 yr)  
   first obs. used      1999-10-01  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48506  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:54:44  

Additional Information
 Earth MOID = 1.10612 au 
 Jupiter MOID = 2.11068 au 
 T_jup = 3.393 
[ show covariance matrix ]

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 14.3   n/a MPO474584  
diameter diameter 3.705 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.68668 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 0.224   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70538 (1999 TD122)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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