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26387 (1999 TG2)
Classification: Main-belt Asteroid          SPK-ID: 2026387
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 .08249731819223526 4.2343e-08  
a 2.789977882382592 1.2963e-08 au
q 2.559812189270377 1.1914e-07 au
i 8.944043905326737 4.8275e-06 deg
node 358.7578256332392 2.3888e-05 deg
peri 182.7425357712311 3.4442e-05 deg
M 354.6309167150193 2.3728e-05 deg
tp 2459025.886171372612
(2020-Jun-25.38617137)
0.00011218 TDB
period 1702.156813194839
4.66
1.1863e-05
3.248e-08
d
yr
n .2114963775425033 1.474e-09 deg/d
Q 3.020143575494808 1.4033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2322  
   data-arc span      25768 days (70.55 yr)  
   first obs. used      1949-11-25  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44189  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:27:29  

Additional Information
 Earth MOID = 1.5627 au 
 Jupiter MOID = 1.94236 au 
 T_jup = 3.307 
[ 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 12.9   n/a MPO365564  
diameter diameter 7.168 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.14720 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.377   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26387 (1999 TG2)          Discovered 1999-Oct-02 by Juels, C. W. at Fountain Hills
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 TG2 = 1997 EJ52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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