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202889 (1991 TF15)
Classification: Main-belt Asteroid          SPK-ID: 2202889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2113395283615369 2.3753e-07  
a 2.57910027865205 2.5616e-08 au
q 2.034034442164617 6.0201e-07 au
i 6.893673442072129 9.9698e-06 deg
node 39.61535133857002 7.2802e-05 deg
peri 337.3121847130926 7.5934e-05 deg
M 340.1883613416047 4.1029e-05 deg
tp 2459083.756599166892
(2020-Aug-22.25659917)
0.00017313 TDB
period 1512.867068539027
4.14
2.2539e-05
6.171e-08
d
yr
n .2379587787231375 3.5451e-09 deg/d
Q 3.124166115139483 3.103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      9685 days (26.52 yr)  
   first obs. used      1991-10-06  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59207  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:21:18  

Additional Information
 Earth MOID = 1.03813 au 
 Jupiter MOID = 2.33884 au 
 T_jup = 3.384 
[ 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 16.2   n/a MPO475694  

202889 (1991 TF15)          Discovered 1991-Oct-06 by Lowe, A. at Palomar
Reference: 20090111/Numbers.arcLast Updated: 2009-02-03

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