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175819 (1999 TN18)
Classification: Main-belt Asteroid          SPK-ID: 2175819
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1925678604635261 5.9807e-08  
a 2.399978363369374 1.172e-08 au
q 1.937819664776578 1.4024e-07 au
i 2.356130359755023 4.5258e-06 deg
node .6584768975339655 0.00010672 deg
peri 38.98371449368575 0.00010723 deg
M 238.6783368626706 1.1604e-05 deg
tp 2459658.162439207759
(2022-Mar-19.66243921)
4.5826e-05 TDB
period 1358.03016422793
3.72
9.9476e-06
2.724e-08
d
yr
n .2650898407729168 1.9418e-09 deg/d
Q 2.862137061962169 1.3977e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      8525 days (23.34 yr)  
   first obs. used      1997-02-13  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58281  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:06:57  

Additional Information
 Earth MOID = .945288 au 
 Jupiter MOID = 2.55868 au 
 T_jup = 3.500 
[ 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 16.98   n/a E2021B55  

175819 (1999 TN18)          Discovered 1999-Oct-14 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

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