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117997 Irazu (1090 T-2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2117997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1136238870490724 4.4223e-08  
a 1.928253303984655 6.4239e-09 au
q 1.709157668370702 8.3796e-08 au
i 19.28934143809055 6.6734e-06 deg
node 359.9235084813737 1.495e-05 deg
peri 80.09629576951023 4.5574e-05 deg
M 90.84183215097868 3.7524e-05 deg
tp 2458753.709784556717
(2019-Sep-27.20978456)
0.00010218 TDB
period 978.0128323691524
2.68
4.8873e-06
1.338e-08
d
yr
n .3680933297448979 1.8394e-09 deg/d
Q 2.147348939598608 7.1538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      687  
   data-arc span      17046 days (46.67 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50895  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:14:51  

Additional Information
 Earth MOID = .808863 au 
 Jupiter MOID = 3.05885 au 
 T_jup = 3.840 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO502792  

117997 Irazu           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
This Hungaria minor planet is named for the 3432-m active volcano Irazú in Costa Rica.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-02-14Last Updated: 2014-04-17

Alternate Designations
 1090 T-2 = 1996 EE3 = 2000 VM61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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