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266520 (2008 ET152)
Classification: Main-belt Asteroid          SPK-ID: 2266520
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1425822418070519 1.1334e-07  
a 2.25892543136424 2.4983e-08 au
q 1.936842779285364 2.5787e-07 au
i 3.135124754748109 8.5106e-06 deg
node 79.35005855247593 0.00018663 deg
peri 343.7291760484051 0.00018969 deg
M 321.5299188301412 3.7956e-05 deg
tp 2459133.017084051145
(2020-Oct-10.51708405)
0.0001319 TDB
period 1240.08447104057
3.40
2.0573e-05
5.633e-08
d
yr
n .2903028046935541 4.8161e-09 deg/d
Q 2.581008083443114 2.8546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      8811 days (24.12 yr)  
   first obs. used      1994-01-08  
   last obs. used      2018-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:40:11  

Additional Information
 Earth MOID = .950293 au 
 Jupiter MOID = 2.7052 au 
 T_jup = 3.606 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456496.5 (2013-Jul-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1427418548894538 1.1408e-07  
q 1.936537879078091 2.596e-07 au
tp 2456650.910344651713
(2013-Dec-24.41034465)
0.00011458 TDB
node 79.37987884784192 0.00018653 deg
peri 343.4196419918882 0.00018955 deg
i 3.136471638855547 8.5177e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      8811 days (24.12 yr)  
   first obs. used      1994-01-08  
   last obs. used      2018-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:40:11  

Additional Information
 Jupiter MOID = 2.7052 au 
 T_jup = 3.606 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.301380843453384E-14 -2.95132568223421E-14 -4.626356385859074E-12 6.575936066060294E-14 -2.106996173539218E-12 3.359925165409365E-15
q -2.95132568223421E-14 6.739088775162802E-14 1.107442217388744E-11 -1.490962466682885E-13 4.909259016481954E-12 -7.568561609910215E-15
tp -4.626356385859074E-12 1.107442217388744E-11 1.312945497318956E-8 9.496308694815393E-11 3.897630915780853E-9 -1.073516366121159E-11
node 6.575936066060294E-14 -1.490962466682885E-13 9.496308694815393E-11 3.479234133067881E-8 -3.471546821672241E-8 -5.240846647154799E-10
peri -2.106996173539218E-12 4.909259016481954E-12 3.897630915780853E-9 -3.471546821672241E-8 3.593064641556054E-8 5.201316579390421E-10
i 3.359925165409365E-15 -7.568561609910215E-15 -1.073516366121159E-11 -5.240846647154799E-10 5.201316579390421E-10 7.255107355471413E-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 17.9   n/a MPO437227  

266520 (2008 ET152)          Discovered 2008-Mar-11 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2008 ET152 = 2005 JW184 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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