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JPL Small-Body Database Browser
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47166 (1999 TT18)
Classification: Main-belt Asteroid          SPK-ID: 2047166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1707707295044149 3.3555e-08  
a 2.265224783373994 8.1632e-09 au
q 1.878390694625737 7.4272e-08 au
i 8.723993643271928 5.7552e-06 deg
node 29.25553707188317 2.4088e-05 deg
peri 231.888044895062 2.9527e-05 deg
M 134.0647022445704 1.6954e-05 deg
tp 2458536.757038821440
(2019-Feb-22.25703882)
5.8265e-05 TDB
period 1245.275327727386
3.41
6.7314e-06
1.843e-08
d
yr
n .2890926945906784 1.5627e-09 deg/d
Q 2.652058872122252 9.5572e-09 au
  Orbit Determination Parameters
   # obs. used (total)      808  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59532  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:42:43  

Additional Information
 Earth MOID = .878054 au 
 Jupiter MOID = 2.43284 au 
 T_jup = 3.582 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457071.5 (2015-Feb-18.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1704201879397113 3.3527e-08  
q 1.879368981106426 7.4148e-08 au
tp 2457291.618565552783
(2015-Sep-26.11856555)
5.8051e-05 TDB
node 29.27342000431061 2.4078e-05 deg
peri 231.9341425099841 2.9549e-05 deg
i 8.725807399725745 5.7563e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      808  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59532  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:42:43  

Additional Information
 Jupiter MOID = 2.43284 au 
 T_jup = 3.582 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.124037102465141E-15 -2.476381280956694E-15 -5.935092517089619E-13 -4.124284294040571E-15 -1.90322297505298E-13 5.27339467113172E-16
q -2.476381280956694E-15 5.497910484473145E-15 1.347836474836175E-12 9.313323844636579E-15 4.274404459980188E-13 -1.388937250887447E-15
tp -5.935092517089619E-13 1.347836474836175E-12 3.369970832013278E-9 2.070677573028394E-12 1.002212092590516E-9 -5.445357063496815E-12
node -4.124284294040571E-15 9.313323844636579E-15 2.070677573028394E-12 5.797608283671163E-10 -5.719595455477728E-10 -4.329497991371208E-11
peri -1.90322297505298E-13 4.274404459980188E-13 1.002212092590516E-9 -5.719595455477728E-10 8.731616660014272E-10 4.122568653843827E-11
i 5.27339467113172E-16 -1.388937250887447E-15 -5.445357063496815E-12 -4.329497991371208E-11 4.122568653843827E-11 3.313457267872681E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO436111  

47166 (1999 TT18)          Discovered 1999-Oct-15 by Comba, P. G. at Prescott
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TT18 = 1998 HM53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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