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58118 (1981 EX7)
Classification: Main-belt Asteroid          SPK-ID: 2058118
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1153312923621832 5.9115e-08  
a 2.650820247356255 1.5981e-08 au
q 2.345097722408816 1.6009e-07 au
i 13.46690839640885 6.6781e-06 deg
node 193.0682323411723 1.7167e-05 deg
peri 153.7374804109236 2.4836e-05 deg
M 129.4646388989078 1.71e-05 deg
tp 2458033.585573044870
(2017-Oct-07.08557305)
7.5081e-05 TDB
period 1576.408781885296
4.32
1.4255e-05
3.903e-08
d
yr
n .2283671622086882 2.0651e-09 deg/d
Q 2.956542772303695 1.7824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      920  
   data-arc span      13796 days (37.77 yr)  
   first obs. used      1981-02-02  
   last obs. used      2018-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52839  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:33:11  

Additional Information
 Earth MOID = 1.34629 au 
 Jupiter MOID = 2.52189 au 
 T_jup = 3.342 
[ 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 15.0   n/a MPO365923  
diameter diameter 2.916 km 0.612 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.665 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.274   0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58118 (1981 EX7)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EX7 = 2000 RU33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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