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102457 (1999 TP221)
Classification: Main-belt Asteroid          SPK-ID: 2102457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1903413743341119 3.8339e-08  
a 2.343455146580741 9.3498e-09 au
q 1.897398673290215 8.8844e-08 au
i 7.195000904318796 3.9766e-06 deg
node 153.0530222238054 3.6989e-05 deg
peri 188.0902296734236 3.8885e-05 deg
M 359.4651698838559 1.3979e-05 deg
tp 2459202.446689779643
(2020-Dec-18.94668978)
5.0888e-05 TDB
period 1310.338179390545
3.59
7.8419e-06
2.147e-08
d
yr
n .274738236023498 1.6442e-09 deg/d
Q 2.789511619871266 1.1129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      861  
   data-arc span      7606 days (20.82 yr)  
   first obs. used      1999-10-02  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:10:24  

Additional Information
 Earth MOID = .887283 au 
 Jupiter MOID = 2.60867 au 
 T_jup = 3.528 
[ 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 15.95   n/a E2021B55  

102457 (1999 TP221)          Discovered 1999-Oct-02 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 TP221 = 2002 LZ40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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