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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1558617462348768 3.8651e-08  
a 2.319276386882933 8.1482e-09 au
q 1.957789919222043 8.9146e-08 au
i 4.753494706165686 4.1997e-06 deg
node 32.10601705328989 4.8958e-05 deg
peri 261.813774914933 5.2425e-05 deg
M 224.701161367915 2.1256e-05 deg
tp 2459485.362676355996
(2021-Sep-27.86267636)
7.6885e-05 TDB
period 1290.11132137512
3.53
6.7988e-06
1.861e-08
d
yr
n .2790456870158139 1.4705e-09 deg/d
Q 2.680762854543822 9.4182e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1402  
   data-arc span      13799 days (37.78 yr)  
   first obs. used      1982-07-09  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5074  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:35:21  

Additional Information
 Earth MOID = .948758 au 
 Jupiter MOID = 2.50832 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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