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129909 (1999 TH97)
Classification: Main-belt Asteroid          SPK-ID: 2129909
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2983028834446592 5.695e-08  
a 2.79580334686681 1.3607e-08 au
q 1.961807146952212 1.6007e-07 au
i 9.998014228707675 6.5232e-06 deg
node 59.14807403871215 2.7111e-05 deg
peri 16.81329149177708 2.9114e-05 deg
M 111.5580940277552 8.111e-06 deg
tp 2458471.376631356565
(2018-Dec-18.87663136)
3.7701e-05 TDB
period 1707.490741678009
4.67
1.2466e-05
3.413e-08
d
yr
n .2108356966235822 1.5392e-09 deg/d
Q 3.629799546781408 1.7666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      7532 days (20.62 yr)  
   first obs. used      1999-09-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52425  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:48:01  

Additional Information
 Earth MOID = .979011 au 
 Jupiter MOID = 1.69666 au 
 T_jup = 3.239 
[ 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 15.2   n/a MPO469356  
diameter diameter 5.353 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129909 (1999 TH97)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

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