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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135934779810303 6.334e-08  
a 3.053200887078906 3.1276e-08 au
q 2.638164696777213 1.9866e-07 au
i 9.234963239077505 6.8071e-06 deg
node 336.9827416996272 3.8133e-05 deg
peri 9.841538168886352 4.3754e-05 deg
M 262.3471490542537 2.2911e-05 deg
tp 2459129.083890152989
(2020-Oct-06.58389015)
0.00012756 TDB
period 1948.639477620546
5.34
2.9941e-05
8.197e-08
d
yr
n .1847442813996514 2.8386e-09 deg/d
Q 3.468237077380599 3.5527e-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 = 1.63057 au 
 Jupiter MOID = 1.93888 au 
 T_jup = 3.202 
[ 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 15.5   n/a MPO446478  

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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