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144870 (2004 MA8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2144870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .546699699574181 3.6164e-08  
a 3.271073583371512 2.9463e-08 au
q 1.482778638057267 1.2621e-07 au
i 13.15116304987575 3.7555e-06 deg
node 32.69317744999447 2.1378e-05 deg
peri 185.4860162063542 2.2572e-05 deg
M 315.9308763113127 9.5487e-06 deg
tp 2459465.024444736310
(2021-Sep-07.52444474)
5.9295e-05 TDB
period 2160.896158902226
5.92
2.9196e-05
7.993e-08
d
yr
n .1665975472800537 2.2509e-09 deg/d
Q 5.059368528685757 4.5571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      10642 days (29.14 yr)  
   first obs. used      1992-01-25  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4767  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:54:25  

Additional Information
 Earth MOID = .475434 au 
 Jupiter MOID = .00785279 au 
 T_jup = 2.884 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.51   n/a MPCxxxxx  

144870 (2004 MA8)          Discovered 2004-Jun-29 by Siding Spring Survey at Siding Spring
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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