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91741 (1999 TL178)
Classification: Main-belt Asteroid          SPK-ID: 2091741
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1198437065516819 4.324e-08  
a 3.001607806395421 1.8698e-08 au
q 2.641884001262531 1.3735e-07 au
i 4.611139032468788 3.8817e-06 deg
node 293.2185154923932 5.6912e-05 deg
peri 156.7481510875288 6.09e-05 deg
M 9.122235108147423 1.9875e-05 deg
tp 2459348.368642963244
(2021-May-13.86864296)
0.00010486 TDB
period 1899.456473968379
5.20
1.7749e-05
4.859e-08
d
yr
n .189527901762277 1.7709e-09 deg/d
Q 3.361331611528312 2.0939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      608  
   data-arc span      8243 days (22.57 yr)  
   first obs. used      1998-06-18  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4804  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:41:21  

Additional Information
 Earth MOID = 1.6593 au 
 Jupiter MOID = 1.82026 au 
 T_jup = 3.237 
[ 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 15.43   n/a E2021B10  

91741 (1999 TL178)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TL178 = 1998 MX3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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