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70451 (1999 TQ18)
Classification: Main-belt Asteroid          SPK-ID: 2070451
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2203871132868882 3.0134e-08  
a 2.591936962989362 1.0313e-08 au
q 2.020707457894553 7.8659e-08 au
i 4.238937582495927 5.3511e-06 deg
node 16.52462770346132 5.3921e-05 deg
peri 300.2807015616109 5.5908e-05 deg
M 23.37612302196113 1.4692e-05 deg
tp 2458901.529659843213
(2020-Feb-22.02965984)
6.1889e-05 TDB
period 1524.17586196696
4.17
9.0968e-06
2.491e-08
d
yr
n .2361932169266986 1.4097e-09 deg/d
Q 3.163166468084172 1.2586e-08 au
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      8689 days (23.79 yr)  
   first obs. used      1997-02-01  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55037  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:54:39  

Additional Information
 Earth MOID = 1.0115 au 
 Jupiter MOID = 2.15916 au 
 T_jup = 3.381 
[ 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 15.4   n/a MPO436274  

70451 (1999 TQ18)          Discovered 1999-Oct-14 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TQ18 = 1998 HL72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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