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44821 Amadora (1999 TZ236)
Classification: Main-belt Asteroid          SPK-ID: 2044821
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .103383484616332 7.7228e-08  
a 2.47066425376212 2.5391e-08 AU
q 2.215238373891183 1.9121e-07 AU
i 12.07444097320343 9.1319e-06 deg
node 89.79448215153921 3.9992e-05 deg
peri 89.26221602530312 6.4144e-05 deg
M 137.0506418511748 4.7639e-05 deg
tp 2456260.495228103492
(2012-Nov-28.99522810)
0.00018879 JED
period 1418.466307467908
3.88
2.1866e-05
5.987e-08
d
yr
n .2537952421602687 3.9124e-09 deg/d
Q 2.726090133633058 2.8016e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      489  
   data-arc span      5382 days (14.74 yr)  
   first obs. used      1998-09-16  
   last obs. used      2013-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56055  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 06:22:42  

Additional Information
 Earth MOID = 1.25817 AU 
 T_jup = 3.446 
[ 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 14.8 mag n/a MPO263717  

44821 Amadora           Discovered 1999 Oct. 3 by the Catalina Sky Survey.
Amadora Gonzalez is the wife of D. Martinez-Delgado, who first observed this minor planet on 1998 Sept. 15 at the Las Campanas Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1999 TZ236 = 1998 SM35 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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