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120851 (1998 OF12)
Classification: Main-belt Asteroid          SPK-ID: 2120851
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2144131222998149 3.7323e-08  
a 2.727251174786693 1.7685e-08 au
q 2.14249273510484 1.0697e-07 au
i 8.214441572434763 4.8244e-06 deg
node 326.8721079734711 2.9349e-05 deg
peri 293.748577874303 3.1603e-05 deg
M 16.94730849444094 1.1281e-05 deg
tp 2459123.056607873035
(2020-Sep-30.55660787)
5.1487e-05 TDB
period 1645.076631186149
4.50
1.6001e-05
4.381e-08
d
yr
n .2188347905352161 2.1285e-09 deg/d
Q 3.312009614468546 2.1477e-08 au
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      7972 days (21.83 yr)  
   first obs. used      1998-07-29  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .532  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:25  

Additional Information
 Earth MOID = 1.14134 au 
 Jupiter MOID = 1.86812 au 
 T_jup = 3.308 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457407.5 (2016-Jan-20.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2133833831318182 3.7328e-08  
q 2.144874016086638 1.0686e-07 au
tp 2457477.076530153518
(2016-Mar-29.57653015)
5.2808e-05 TDB
node 326.9099999501721 2.9358e-05 deg
peri 293.4932150143985 3.1632e-05 deg
i 8.212680167502716 4.8235e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      7972 days (21.83 yr)  
   first obs. used      1998-07-29  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .532  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:25  

Additional Information
 Jupiter MOID = 1.86812 au 
 T_jup = 3.308 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.393349746904014E-15 -3.957805922872071E-15 6.141733916413203E-14 7.745952780472174E-15 4.23673054975921E-14 -1.070628254490963E-15
q -3.957805922872071E-15 1.141841026806257E-14 -3.262464548884611E-13 -2.439530357362927E-14 -1.526012618441936E-13 3.379057098845029E-15
tp 6.141733916413203E-14 -3.262464548884611E-13 2.788715775890259E-9 -2.852054035384041E-12 6.386911998070446E-10 3.753137311608923E-12
node 7.745952780472174E-15 -2.439530357362927E-14 -2.852054035384041E-12 8.618800214861105E-10 -8.531849545078035E-10 1.901980869655701E-11
peri 4.23673054975921E-14 -1.526012618441936E-13 6.386911998070446E-10 -8.531849545078035E-10 1.000569489732123E-9 -1.809761975281946E-11
i -1.070628254490963E-15 3.379057098845029E-15 3.753137311608923E-12 1.901980869655701E-11 -1.809761975281946E-11 2.326593194967007E-11

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 15.50   n/a E2021B55  

120851 (1998 OF12)          Discovered 1998-Jul-29 by Broughton, J. at Reedy Creek
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 OF12 = 2003 SK128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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