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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1929-Jan-24 09:25 00:03 Eunom 0.0306132294262712 0.0306020017258691 0.030624491766318 5.47804937770519 5.47804929399876 2425635.892672151 2.94251226394989 1727.2296754211 64.3143168343689 -71.1812506826847 67367.7280313095 T 14 CATAB v2.0f-lin.ifort 2020-Feb-24 09:30:21 2020-Feb-24 09:30
2064-Aug-30 18:51 00:09 Iris 0.0434271292224127 0.0434095686562651 0.0434446903916032 3.65444340414833 3.6544433679248 2475163.285302493 8.94701286609459 911.679637910314 78.6889060577964 -16.3575901860427 24219.3361456061 T 14 CATAB v2.0f-lin.ifort 2020-Feb-24 09:30:21 2020-Feb-24 09:30

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