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JPL Small-Body Database Browser
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74855 (1999 TR87)
Classification: Main-belt Asteroid          SPK-ID: 2074855
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336556943342664 4.27e-08  
a 2.319601510073431 1.2093e-08 au
q 2.009573559665754 1.0282e-07 au
i 7.345108116566162 6.0594e-06 deg
node 65.2153019907276 4.2645e-05 deg
peri 249.4076887867171 5.0181e-05 deg
M 264.4692316375877 2.8546e-05 deg
tp 2458942.920116852654
(2020-Apr-03.42011685)		 0.00010333 TDB
period 1290.382608452442
3.53		 1.0091e-05
2.763e-08		 d
yr
n .2789870210911697 2.1816e-09 deg/d
Q 2.629629460481108 1.3709e-08 au
   Orbit Determination Parameters
   # obs. used (total)      586  
   data-arc span      7680 days (21.03 yr)  
   first obs. used      1998-05-01  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60456  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:42:12  

Additional Information
 Earth MOID = 1.00878 au 
 Jupiter MOID = 2.62376 au 
 T_jup = 3.556 
[ 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 16.0   n/a MPO231844  

74855 (1999 TR87)          Discovered 1999-Oct-15 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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