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487839 (2015 TW84)
Classification: Outer Main-belt Asteroid          SPK-ID: 2487839
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0754075016376435 8.9162e-08  
a 3.204017473392089 8.4962e-08 au
q 2.962410520520237 2.9234e-07 au
i 5.102225711611942 9.0707e-06 deg
node 198.7876557782564 8.3996e-05 deg
peri 323.8869945654327 0.00010418 deg
M 180.276249357313 5.9058e-05 deg
tp 2460046.288142161213
(2023-Apr-11.78814216)
0.00034712 TDB
period 2094.791199447718
5.74
8.3323e-05
2.281e-07
d
yr
n .1718548369378831 6.8357e-09 deg/d
Q 3.445624426263941 9.1369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      82  
   data-arc span      4868 days (13.33 yr)  
   first obs. used      2004-12-13  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64527  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-15 06:51:39  

Additional Information
 Earth MOID = 1.97183 au 
 Jupiter MOID = 1.54165 au 
 T_jup = 3.183 
[ 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 16.3   n/a MPO446847  

487839 (2015 TW84)          Discovered 2009-Oct-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2017-03-14

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