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9009 Tirso (1984 HJ1)
Classification: Main-belt Asteroid          SPK-ID: 2009009
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1425803895762321 5.1739e-08  
a 2.26402742196144 1.5251e-08 AU
q 1.941221510126906 1.205e-07 AU
i 2.98944329512808 5.5717e-06 deg
node 81.55009400194936 0.00012475 deg
peri 178.0624453128004 0.00012817 deg
M 323.1158625430693 3.6576e-05 deg
tp 2457127.984704622668
(2015-Apr-15.48470462)
0.00012714 JED
period 1244.288109427826
3.41
1.2573e-05
3.442e-08
d
yr
n .2893220607609459 2.9235e-09 deg/d
Q 2.586833333795975 1.7426e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1056  
   data-arc span      10981 days (30.06 yr)  
   first obs. used      1984-04-23  
   last obs. used      2014-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51609  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:41:18  

Additional Information
 Earth MOID = .927447 AU 
 T_jup = 3.602 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO296210  

9009 Tirso           Discovered 1984 Apr. 23 by V. Zappala at the European Southern Observatory.
Tirso, the scepter of Dionysus, aided the enjoyment of life. As an acronym meaning, in Italian, "all together enjoying, studying, observing", it represents a scientific and cultural circle, where people share experiences for a better understanding of values, with the dissemination of astronomy as the main motivating force.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

Alternate Designations
 1984 HJ1 = 1997 AO23 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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