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186143 (2001 TB257)
Classification: Main-belt Asteroid          SPK-ID: 2186143
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07454136644733067 4.7639e-08  
a 2.648095865910655 1.6268e-08 au
q 2.450703181582148 1.2775e-07 au
i 1.145982921338737 5.4193e-06 deg
node 202.3126462584213 0.00021882 deg
peri 137.6918917707842 0.00022149 deg
M 250.803182174703 3.6968e-05 deg
tp 2459873.926436573068
(2022-Oct-21.42643657)
0.00016334 TDB
period 1573.979174386596
4.31
1.4504e-05
3.971e-08
d
yr
n .2287196716819951 2.1077e-09 deg/d
Q 2.845488550239163 1.7481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      299  
   data-arc span      8102 days (22.18 yr)  
   first obs. used      1999-03-06  
   last obs. used      2021-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56741  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:44:58  

Additional Information
 Earth MOID = 1.44117 au 
 Jupiter MOID = 2.42348 au 
 T_jup = 3.387 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.76   n/a E2021B55  

186143 (2001 TB257)          Discovered 2001-Oct-15 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2001 TB257 = 1999 ER1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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