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JPL Small-Body Database Browser
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59109 (1998 WT28)
Classification: Main-belt Asteroid          SPK-ID: 2059109
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06331442135208992 5.3238e-08  
a 2.362381138822602 1.2961e-08 au
q 2.212808344004958 1.2495e-07 au
i 5.71212458081287 4.0102e-06 deg
node 276.730627070574 5.7641e-05 deg
peri 251.636538364224 7.0225e-05 deg
M 272.4343875118669 4.4673e-05 deg
tp 2459323.092648201969
(2021-Apr-18.59264820)
0.000166 TDB
period 1326.243830801131
3.63
1.0914e-05
2.988e-08
d
yr
n .2714432984638567 2.2338e-09 deg/d
Q 2.511953933640246 1.3781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      621  
   data-arc span      10725 days (29.36 yr)  
   first obs. used      1990-09-23  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58148  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:42:35  

Additional Information
 Earth MOID = 1.22735 au 
 Jupiter MOID = 2.48877 au 
 T_jup = 3.541 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457030.5 (2015-Jan-08.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06270355069615274 5.3457e-08  
q 2.214280305878169 1.2533e-07 au
tp 2456671.701624889695
(2014-Jan-14.20162489)
0.00015615 TDB
node 276.7890452880767 5.7693e-05 deg
peri 251.900328569071 7.0396e-05 deg
i 5.709060827153091 4.0085e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      621  
   data-arc span      10725 days (29.36 yr)  
   first obs. used      1990-09-23  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58148  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:42:35  

Additional Information
 Jupiter MOID = 2.48877 au 
 T_jup = 3.541 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.85768352969076E-15 -6.668574582126487E-15 1.708142841605006E-12 -3.32682412013887E-15 4.814430198570793E-13 3.631395288397274E-15
q -6.668574582126487E-15 1.570726030967586E-14 -3.211239736424652E-12 9.781340744241153E-15 -9.182105072614614E-13 -8.06318628825359E-15
tp 1.708142841605006E-12 -3.211239736424652E-12 2.438436207083593E-8 3.843622518103328E-11 6.339281644966196E-9 7.410527538352388E-12
node -3.32682412013887E-15 9.781340744241153E-15 3.843622518103328E-11 3.328434525599617E-9 -3.3019321891089E-9 1.500861954795872E-13
peri 4.814430198570793E-13 -9.182105072614614E-13 6.339281644966196E-9 -3.3019321891089E-9 4.955611578259245E-9 1.795879312772471E-12
i 3.631395288397274E-15 -8.06318628825359E-15 7.410527538352388E-12 1.500861954795872E-13 1.795879312772471E-12 1.606830528671193E-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 15.9   n/a MPO452970  
diameter diameter 1.588 km 0.391 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.160   0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59109 (1998 WT28)          Discovered 1998-Nov-21 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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