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11667 Testa (1997 UB1)
Classification: Main-belt Asteroid          SPK-ID: 2011667
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1559221581536135 3.8369e-08  
a 2.31889151420509 8.1179e-09 au
q 1.957324944786132 8.8541e-08 au
i 4.753886492835774 4.1943e-06 deg
node 32.10134856637974 4.883e-05 deg
peri 261.8799047759587 5.2246e-05 deg
M 280.4525111397851 2.1116e-05 deg
tp 2459485.498810595213
(2021-Sep-27.99881060)
7.607e-05 TDB
period 1289.790203114648
3.53
6.7729e-06
1.854e-08
d
yr
n .2791151608460465 1.4657e-09 deg/d
Q 2.680458083624049 9.3836e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1420  
   data-arc span      14108 days (38.63 yr)  
   first obs. used      1982-07-09  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50968  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:54:21  

Additional Information
 Earth MOID = .946363 au 
 Jupiter MOID = 2.5081 au 
 T_jup = 3.558 
[ 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 14.9   n/a MPO458941  
diameter diameter 2.503 km 0.384 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.407   0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11667 Testa           Discovered 1997 Oct. 19 by L. Tesi and A. Boattini at San Marcello Pistoiese.
Augusto Testa (b. 1950), Italian amateur astronomer, observes minor planets at the Sormano Astronomical Observatory. Over the past few years he has developed a lot of software dedicated to the observation of minor planets, and these are widely used by the Italian community of astrometric observers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

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