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181944 (1999 TN180)
Classification: Main-belt Asteroid          SPK-ID: 2181944
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 .2325519173993262 5.1943e-08  
a 2.400123722843645 1.4536e-08 au
q 1.841970349100746 1.2355e-07 au
i 2.963589062285281 4.5711e-06 deg
node 130.3658943344945 9.6138e-05 deg
peri 216.8398289544134 9.6919e-05 deg
M 280.0806040306383 1.7027e-05 deg
tp 2459502.007807928743
(2021-Oct-14.50780793)
6.639e-05 TDB
period 1358.153543802545
3.72
1.2339e-05
3.378e-08
d
yr
n .2650657590540724 2.4081e-09 deg/d
Q 2.958277096586543 1.7917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      9518 days (26.06 yr)  
   first obs. used      1994-04-02  
   last obs. used      2020-04-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60832  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:42  

Additional Information
 Earth MOID = .834313 au 
 Jupiter MOID = 2.46489 au 
 T_jup = 3.487 
[ 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 16.46   n/a E2021B55  

181944 (1999 TN180)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

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