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JPL Small-Body Database Browser
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154136 (2002 ES121)
Classification: Main-belt Asteroid          SPK-ID: 2154136
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06858955762799472 4.9832e-08  
a 2.800453523712412 2.6346e-08 au
q 2.608371655363218 1.4064e-07 au
i 2.077845699515471 5.5297e-06 deg
node 132.5941107632338 0.0001535 deg
peri 186.4304203293671 0.00015968 deg
M 158.5318797128405 4.4408e-05 deg
tp 2458246.701811443930
(2018-May-08.20181144)
0.00021219 TDB
period 1711.752540698637
4.69
2.4155e-05
6.613e-08
d
yr
n .2103107729888744 2.9678e-09 deg/d
Q 2.992535392061605 2.8153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      300  
   data-arc span      9803 days (26.84 yr)  
   first obs. used      1993-03-23  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61185  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:30:16  

Additional Information
 Earth MOID = 1.59514 au 
 Jupiter MOID = 2.20321 au 
 T_jup = 3.321 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456828.5 (2014-Jun-20.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0702730029300795 5.0039e-08  
q 2.602009179579788 1.4121e-07 au
tp 2456525.889814512205
(2013-Aug-21.38981451)
0.00021019 TDB
node 132.6303429780652 0.00015337 deg
peri 184.4548705764124 0.00015923 deg
i 2.077763887662988 5.5369e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      300  
   data-arc span      9803 days (26.84 yr)  
   first obs. used      1993-03-23  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61185  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:30:16  

Additional Information
 Jupiter MOID = 2.20321 au 
 T_jup = 3.321 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.503915991436562E-15 -6.960991901039862E-15 1.732309842133185E-12 -5.389926796471339E-15 3.325046701089161E-13 2.876315649857327E-16
q -6.960991901039862E-15 1.99390615680159E-14 -5.951647596777263E-12 1.820706222398154E-14 -1.138367938207503E-12 -5.231729477345017E-16
tp 1.732309842133185E-12 -5.951647596777263E-12 4.417997213040117E-8 -5.671031721737646E-11 9.03467318667587E-9 -2.597385302638037E-12
node -5.389926796471339E-15 1.820706222398154E-14 -5.671031721737646E-11 2.352267429090546E-8 -2.351828714990656E-8 9.194285965074569E-11
peri 3.325046701089161E-13 -1.138367938207503E-12 9.03467318667587E-9 -2.351828714990656E-8 2.535497941123773E-8 -9.239642650058236E-11
i 2.876315649857327E-16 -5.231729477345017E-16 -2.597385302638037E-12 9.194285965074569E-11 -9.239642650058236E-11 3.065733268996501E-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 MPO459711  
diameter diameter 2.918 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

154136 (2002 ES121)          Discovered 2002-Mar-12 by Spacewatch at Kitt Peak
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2002 ES121 = 1997 CB23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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