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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1333344966932092 4.2265e-08  
a 2.319746295268074 1.2068e-08 au
q 2.010444090532568 1.02e-07 au
i 7.342969286390548 6.0018e-06 deg
node 65.2057378336978 4.1941e-05 deg
peri 249.191193055059 4.9567e-05 deg
M 16.22334438791541 2.8839e-05 deg
tp 2458942.343662495656
(2020-Apr-02.84366250)
0.00010319 TDB
period 1290.503425246828
3.53
1.007e-05
2.757e-08
d
yr
n .278960902355718 2.1769e-09 deg/d
Q 2.629048500003579 1.3677e-08 au
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      7732 days (21.17 yr)  
   first obs. used      1998-05-01  
   last obs. used      2019-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:23:10  

Additional Information
 Earth MOID = 1.01035 au 
 Jupiter MOID = 2.62436 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 16.1   n/a MPO474635  

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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