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311974 (2007 EY56)
Classification: Outer Main-belt Asteroid          SPK-ID: 2311974
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09835429914213932 6.0471e-08  
a 3.243799697035313 3.834e-08 au
q 2.924758051275921 1.9909e-07 au
i 11.69980664427536 6.3336e-06 deg
node 37.81260970209824 2.0231e-05 deg
peri 140.7085355117349 3.2338e-05 deg
M 88.8968740439451 2.3602e-05 deg
tp 2458473.557218895792
(2018-Dec-21.05721890)
0.00013958 TDB
period 2133.926566458786
5.84
3.7833e-05
1.036e-07
d
yr
n .1687030873782193 2.991e-09 deg/d
Q 3.562841342794705 4.2111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      6676 days (18.28 yr)  
   first obs. used      2001-03-23  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50325  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:42:48  

Additional Information
 Earth MOID = 1.93729 au 
 Jupiter MOID = 1.4274 au 
 T_jup = 3.143 
[ 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 14.9   n/a MPO437378  
rotation period rot_per 2.76 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) ArXiv:1901.08719.]

311974 (2007 EY56)          Discovered 2007-Mar-14 by Lowe, A. at Mayhill
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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