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102520 (1999 TW318)
Classification: Main-belt Asteroid          SPK-ID: 2102520
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1309679405789593 6.8362e-08  
a 2.448495428899323 1.2449e-08 au
q 2.127821025059383 1.7158e-07 au
i 6.343275161044491 4.8488e-06 deg
node 34.28402233597001 4.5609e-05 deg
peri 137.2394420998728 4.845e-05 deg
M 56.90502438670597 1.7219e-05 deg
tp 2458979.294721415444
(2020-May-09.79472142)
6.6571e-05 TDB
period 1399.417734175401
3.83
1.0672e-05
2.922e-08
d
yr
n .2572498484250865 1.9619e-09 deg/d
Q 2.769169832739262 1.4079e-08 au
  Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      8994 days (24.62 yr)  
   first obs. used      1995-10-26  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:54:18  

Additional Information
 Earth MOID = 1.13721 au 
 Jupiter MOID = 2.19935 au 
 T_jup = 3.477 
[ 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 16.45   n/a E2021B55  

102520 (1999 TW318)          Discovered 1999-Oct-12 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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