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187810 (1999 TC18)
Classification: Main-belt Asteroid          SPK-ID: 2187810
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1992675324024493 6.2747e-08  
a 3.084545098306674 2.3724e-08 au
q 2.469895407983033 2.0505e-07 au
i 13.01113292544929 4.6458e-06 deg
node 186.7999354816995 1.7058e-05 deg
peri 175.0888431126211 2.2896e-05 deg
M 346.3784634702124 1.1715e-05 deg
tp 2459275.370151514105
(2021-Mar-01.87015151)
6.4632e-05 TDB
period 1978.723507890337
5.42
2.2829e-05
6.25e-08
d
yr
n .1819354743421543 2.099e-09 deg/d
Q 3.699194788630316 2.8452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      400  
   data-arc span      7731 days (21.17 yr)  
   first obs. used      1999-10-09  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:55  

Additional Information
 Earth MOID = 1.46621 au 
 Jupiter MOID = 1.76861 au 
 T_jup = 3.157 
[ 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 15.72   n/a E2021B55  

187810 (1999 TC18)          Discovered 1999-Oct-10 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1999 TC18 = 2004 RV173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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