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215118 (1998 TO12)
Classification: Main-belt Asteroid          SPK-ID: 2215118
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1619968725307842 5.4015e-08  
a 2.529781836775224 1.3687e-08 au
q 2.119965091032455 1.3677e-07 au
i .3726724657663135 9.2069e-06 deg
node 222.8245677672563 0.00067363 deg
peri 105.7731712081806 0.00067424 deg
M 185.3371991116316 2.7606e-05 deg
tp 2459713.551588137966
(2022-May-14.05158814)
0.00011377 TDB
period 1469.680838873816
4.02
1.1927e-05
3.265e-08
d
yr
n .2449511420968514 1.9879e-09 deg/d
Q 2.939598582517994 1.5904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      7782 days (21.31 yr)  
   first obs. used      1998-10-13  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60451  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:19:22  

Additional Information
 Earth MOID = 1.10873 au 
 Jupiter MOID = 2.39624 au 
 T_jup = 3.433 
[ 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 17.2   n/a MPO459959  

215118 (1998 TO12)          Discovered 1998-Oct-13 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 1998 TO12 = 1998 WM25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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