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312998 (1999 TL250)
Classification: Main-belt Asteroid          SPK-ID: 2312998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1345613921343165 6.3479e-08  
a 3.052627753351504 3.236e-08 au
q 2.641861913192675 1.9803e-07 au
i 9.243442218681816 6.8079e-06 deg
node 336.8383502431971 3.8073e-05 deg
peri 9.760166070372778 4.3746e-05 deg
M 336.3191809487327 2.3518e-05 deg
tp 2459128.645517104589
(2020-Oct-06.14551710)
0.00012822 TDB
period 1948.090818048925
5.33
3.0977e-05
8.481e-08
d
yr
n .1847963127101803 2.9384e-09 deg/d
Q 3.463393593510333 3.6714e-08 au
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      7214 days (19.75 yr)  
   first obs. used      1999-09-30  
   last obs. used      2019-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52108  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:37  

Additional Information
 Earth MOID = 1.63511 au 
 Jupiter MOID = 1.94602 au 
 T_jup = 3.203 
[ 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 15.6   n/a MPO476407  

312998 (1999 TL250)          Discovered 1999-Oct-09 by CSS at Catalina
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 1999 TL250 = 2004 PK81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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