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9111 Matarazzo (1997 BD2)
Classification: Main-belt Asteroid          SPK-ID: 2009111
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1416027341199419 5.8002e-08  
a 2.29168478278888 1.1512e-08 au
q 1.967175951804909 1.306e-07 au
i 10.05615926620268 4.8945e-06 deg
node 128.7332938027026 3.2062e-05 deg
peri 267.841046944895 3.7394e-05 deg
M 307.8283130722637 2.2065e-05 deg
tp 2457784.138242212411
7.8471e-05 JED
period 1267.157937370083
n .2841003393366737 2.1408e-09 deg/d
Q 2.61619361377285 1.3143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1209  
   data-arc span      12140 days (33.24 yr)  
   first obs. used      1983-01-12  
   last obs. used      2016-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55018  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:04:28  

Additional Information
 Earth MOID = 1.00272 au 
 Jupiter MOID = 2.82278 au 
 T_jup = 3.564 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO337334  
rotation period rot_per 60. h n/a LCDB (Rev. 2016-February); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Higgins, D.J. (2011) id/lightcurves.htm]

9111 Matarazzo           Discovered 1997 Jan. 28 by P. Sicoli and F. Manca at Sormano.
The Sicilian amateur astronomer Giuseppe "Corrado" Matarazzo (b. 1946) is an experienced mathematician whose interests include orbital computations. In 1995 he co-authored Elementi di Calcolo delle Orbite.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1997 BD2 = 1983 AR1 = 1990 DO5 = 1995 OK10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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