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487931 (2015 TR209)
Classification: Main-belt Asteroid          SPK-ID: 2487931
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2260694553038056 9.619e-08  
a 2.613157721363289 2.1924e-08 au
q 2.022402578671756 2.6119e-07 au
i 5.157294022305507 9.0127e-06 deg
node 14.19360715768111 5.6432e-05 deg
peri 5.283586907808834 6.2838e-05 deg
M 41.54488282945995 1.9978e-05 deg
tp 2458822.441832638016
(2019-Dec-04.94183264)
8.4947e-05 TDB
period 1542.932267096429
4.22
1.9418e-05
5.316e-08
d
yr
n .2333219725046433 2.9363e-09 deg/d
Q 3.203912864054821 2.6881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      178  
   data-arc span      7711 days (21.11 yr)  
   first obs. used      1998-09-20  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52663  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 18:49:01  

Additional Information
 Earth MOID = 1.02479 au 
 Jupiter MOID = 2.26071 au 
 T_jup = 3.366 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO495393  

487931 (2015 TR209)          Discovered 1998-Sep-20 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: Last Updated: 2017-03-14

Alternate Designations
 2015 TR209 = 1998 SG21 = 2007 YY12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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