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68267 (2001 EA16)
Classification: Apollo [NEO]          SPK-ID: 2068267
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4274392773075162 5.7594e-08  
a 1.509795009723889 2.7145e-09 au
q .8644493218850157 8.7305e-08 au
i 38.82351053608482 1.0088e-05 deg
node 8.011737813100311 3.0371e-06 deg
peri 317.4142775884851 7.2325e-06 deg
M 139.3950396464971 4.4994e-06 deg
tp 2458938.126345655559
(2020-Mar-29.62634566)
8.0492e-06 TDB
period 677.6031328197428
1.86
1.8274e-06
5.003e-09
d
yr
n .5312844385797252 1.4328e-09 deg/d
Q 2.155140697562763 3.8748e-09 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   # delay obs. used      3  
   # Doppler obs. used      1  
   data-arc span      7366 days (20.17 yr)  
   first obs. used      2001-03-04  
   last obs. used      2021-05-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49696  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-05 05:52:14  

Additional Information
 Earth MOID = .059492 au 
 Jupiter MOID = 3.45432 au 
 T_jup = 4.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457201.5 (2015-Jun-28.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4275736348907459 5.7605e-08  
q .864261794073939 8.7322e-08 au
tp 2456905.435758374744
(2014-Sep-04.93575837)
6.7389e-06 TDB
node 8.033462700263634 3.0351e-06 deg
peri 317.3821615389551 7.2291e-06 deg
i 38.8185267669748 1.0087e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      419  
   # delay obs. used      3  
   # Doppler obs. used      1  
   data-arc span      7366 days (20.17 yr)  
   first obs. used      2001-03-04  
   last obs. used      2021-05-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49696  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-05 05:52:14  

Additional Information
 Jupiter MOID = 3.45432 au 
 T_jup = 4.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.318323357861289E-15 -5.029400013385618E-15 1.994059431065477E-13 6.123864883002365E-14 5.906615392342333E-14 6.369902716642816E-14
q -5.029400013385618E-15 7.625074630183169E-15 -3.025917241649311E-13 -9.228630941815066E-14 -9.131371032345345E-14 -9.439947661216143E-14
tp 1.994059431065477E-13 -3.025917241649311E-13 4.541327657606384E-11 1.419804111585303E-11 3.314656560810469E-11 3.670479695076313E-11
node 6.123864883002365E-14 -9.228630941815066E-14 1.419804111585303E-11 9.21169250611775E-12 -5.057984568398362E-13 2.955682768634294E-11
peri 5.906615392342333E-14 -9.131371032345345E-14 3.314656560810469E-11 -5.057984568398362E-13 5.226022286672826E-11 -1.098880319717325E-11
i 6.369902716642816E-14 -9.439947661216143E-14 3.670479695076313E-11 2.955682768634294E-11 -1.098880319717325E-11 1.017480957809753E-10

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 16.84   n/a MPCxxxxx  
diameter diameter 0.875 km 0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 3.5 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Vaduvescu, O.; Aznar, A.M.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
geometric albedo albedo 0.401   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

68267 (2001 EA16)          Discovered 2001-Mar-04 by NEAT at Haleakala
Reference: 20030910/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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