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120785 (1998 FT3)
Classification: Main-belt Asteroid          SPK-ID: 2120785
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1729487822053402 4.8221e-08  
a 2.538897206798528 1.1833e-08 au
q 2.099798026738183 1.258e-07 au
i 1.962699882005139 4.186e-06 deg
node 15.26054276812552 0.00015971 deg
peri 73.47434737628191 0.00016036 deg
M 233.3975715245091 1.5489e-05 deg
tp 2459520.143667402868
(2021-Nov-01.64366740)
6.4244e-05 TDB
period 1477.631373408038
4.05
1.0331e-05
2.828e-08
d
yr
n .2436331594460456 1.7033e-09 deg/d
Q 2.977996386858873 1.388e-08 au
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      9695 days (26.54 yr)  
   first obs. used      1994-04-03  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57428  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:47  

Additional Information
 Earth MOID = 1.11726 au 
 Jupiter MOID = 2.22624 au 
 T_jup = 3.425 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457427.5 (2016-Feb-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1738112421218646 4.7635e-08  
q 2.096395202493291 1.2421e-07 au
tp 2458038.841614016580
(2017-Oct-12.34161402)
6.2313e-05 TDB
node 15.51907692237633 0.00015928 deg
peri 72.48400363683307 0.00015994 deg
i 1.966637826808785 4.1824e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      9695 days (26.54 yr)  
   first obs. used      1994-04-03  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57428  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:54:47  

Additional Information
 Jupiter MOID = 2.22624 au 
 T_jup = 3.425 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.269052601643566E-15 -5.900444962221578E-15 1.712335523147529E-12 -9.81248321770965E-15 4.458722124025608E-13 -1.29311781265116E-15
q -5.900444962221578E-15 1.542751701061561E-14 -4.291698158404451E-12 2.641741650190563E-14 -1.13213744474462E-12 3.410205314175938E-15
tp 1.712335523147529E-12 -4.291698158404451E-12 3.882925118772406E-9 1.710669317671152E-11 9.446446237121474E-10 -1.976449207599799E-12
node -9.81248321770965E-15 2.641741650190563E-14 1.710669317671152E-11 2.53688832493747E-8 -2.534963407825514E-8 -3.250659853795787E-10
peri 4.458722124025608E-13 -1.13213744474462E-12 9.446446237121474E-10 -2.534963407825514E-8 2.557922555309184E-8 3.243717363699334E-10
i -1.29311781265116E-15 3.410205314175938E-15 -1.976449207599799E-12 -3.250659853795787E-10 3.243717363699334E-10 1.749273380752145E-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 16.4   n/a MPO436583  
rotation period rot_per 4.590 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

120785 (1998 FT3)          Discovered 1998-Mar-20 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1998 FT3 = 2002 CQ90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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