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325102 (2008 EY5)
Classification: Aten [NEO]          SPK-ID: 2325102
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .626742898754364 1.1465e-07  
a .626209974623962 1.071e-08 au
q .2337373198992434 7.2908e-08 au
i 5.109657176049199 9.3867e-06 deg
node 245.5003501038462 0.00030019 deg
peri 106.6144445426347 0.00029649 deg
M 29.61006607366485 7.597e-05 deg
tp 2458985.612722828744
(2020-May-16.11272283)
3.7886e-05 TDB
period 180.9999264546979
0.50
4.6433e-06
1.271e-08
d
yr
n 1.988951084408886 5.1023e-08 deg/d
Q 1.018682629348681 1.7422e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -5.179939918392275E-14 1.439E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      158  
   data-arc span      4347 days (11.90 yr)  
   first obs. used      2008-03-04  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .37555  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-12 09:00:37  

Additional Information
 Earth MOID = .0788292 au 
 Jupiter MOID = 4.42326 au 
 T_jup = 8.848 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457472.5 (2016-Mar-25.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .626604584792376 1.1471e-07  
q .2338906043502099 7.3048e-08 au
tp 2457537.385134892253
(2016-May-28.88513489)
1.9519e-05 TDB
node 245.7118034544849 0.00030088 deg
peri 106.4018032614626 0.00029713 deg
i 5.102727543913001 9.3153e-06 deg

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -5.179939918392275E-14 1.439E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      158  
   data-arc span      4347 days (11.90 yr)  
   first obs. used      2008-03-04  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .37555  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-12 09:00:37  

Additional Information
 Jupiter MOID = 4.42326 au 
 T_jup = 8.848 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
Orbit Covariance (7×7)
  e q tp node peri i A2
e 1.315890312550876E-14 -8.376252449384164E-15 -8.331092267919774E-13 -1.16816937455657E-12 1.589795451629796E-12 4.369524695355509E-13 -1.015640188628226E-23
q -8.376252449384164E-15 5.33600424700482E-15 5.363300577915082E-13 4.494830787148015E-13 -7.256868536179174E-13 -2.73842914032916E-13 3.314392437962963E-23
tp -8.331092267919774E-13 5.363300577915082E-13 3.809922869211143E-10 6.684344705456455E-10 -5.538058676696859E-10 -6.934544062440225E-11 -2.847049729315419E-20
node -1.16816937455657E-12 4.494830787148015E-13 6.684344705456455E-10 9.052608063627466E-8 -8.934295299660775E-8 -2.183495164883047E-9 -2.299789139713517E-18
peri 1.589795451629796E-12 -7.256868536179174E-13 -5.538058676696859E-10 -8.934295299660775E-8 8.828453506231553E-8 2.162925064751687E-9 2.232862225732054E-18
i 4.369524695355509E-13 -2.73842914032916E-13 -6.934544062440225E-11 -2.183495164883047E-9 2.162925064751687E-9 8.67755961166605E-11 4.763744482123107E-20
A2 -1.015640188628226E-23 3.314392437962963E-23 -2.847049729315419E-20 -2.299789139713517E-18 2.232862225732054E-18 4.763744482123107E-20 2.071432108517405E-28

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 20.1   n/a MPO258248  
diameter diameter 0.361 km 0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.124   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

325102 (2008 EY5)          Discovered 2008-Mar-04 by Siding Spring Survey at Siding Spring
Reference: 20120406/Numbers.arcLast Updated: 2012-04-09

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