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364888 (2008 EN57)
Classification: Main-belt Asteroid          SPK-ID: 2364888
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1998489052981469 6.304e-08  
a 2.575887610021903 2.2504e-08 au
q 2.061099290987966 1.6671e-07 au
i 14.75423319414073 5.3124e-06 deg
node 159.9450237675897 2.0208e-05 deg
peri 222.3519877137753 2.2378e-05 deg
M 186.9665984822515 9.9897e-06 deg
tp 2459926.298784642222
(2022-Dec-12.79878464)
4.6955e-05 TDB
period 1510.041183836978
4.13
1.9789e-05
5.418e-08
d
yr
n .2384040937779252 3.1242e-09 deg/d
Q 3.090675929055841 2.7002e-08 au
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      4809 days (13.17 yr)  
   first obs. used      2008-02-18  
   last obs. used      2021-04-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50102  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 12:19:42  

Additional Information
 Earth MOID = 1.08302 au 
 Jupiter MOID = 2.42865 au 
 T_jup = 3.353 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.76   n/a E2021B25  
rotation period rot_per 3.91917 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

364888 (2008 EN57)          Discovered 2008-Feb-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-06-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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