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9489 Tanemahuta (1146 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2009489
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09820454243089828 5.5474e-08  
a 2.634248544959035 1.8936e-08 AU
q 2.375553371952074 1.526e-07 AU
i 4.744271779223487 8.9274e-06 deg
node 199.6065713869465 6.489e-05 deg
peri 79.39937756948173 8.0325e-05 deg
M 306.922828751911 4.5412e-05 deg
tp 2457030.744263387224
(2015-Jan-08.24426339)
0.00019738 JED
period 1561.649441187676
4.28
1.6839e-05
4.61e-08
d
yr
n .2305254883107507 2.4857e-09 deg/d
Q 2.892943717965997 2.0796e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      730  
   data-arc span      15804 days (43.27 yr)  
   first obs. used      1971-03-24  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58497  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:21:54  

Additional Information
 Earth MOID = 1.36448 AU 
 T_jup = 3.387 
[ 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 14.4 mag n/a MPO250304  

9489 Tanemahuta           Discovered 1971 Mar. 25 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named for the god of the forests of the Maori people in New Zealand and for the great kauri tree in the Waipoua forest that also bears this name.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1146 T-1 = 1994 TY8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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