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5381 Sekhmet (1991 JY)
Classification: Aten [NEO]          SPK-ID: 2005381
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 89 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2963412966939172 3.3342e-07  
a .9474534819956352 1.1338e-09 au
q .6666838885838817 3.1611e-07 au
i 48.9667777193404 3.2202e-05 deg
node 58.53867711504974 5.7591e-06 deg
peri 37.42871844716527 2.7032e-05 deg
M 289.2007866207338 6.4699e-05 deg
tp 2459066.746235303307
(2020-Aug-05.24623530)
6.0509e-05 TDB
period 336.8490068023079
0.92
6.0468e-07
1.656e-09
d
yr
n 1.068728102889373 1.9185e-09 deg/d
Q 1.228223075407389 1.4699e-09 au
  Orbit Determination Parameters
   # obs. used (total)      360  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      9438 days (25.84 yr)  
   first obs. used      1991-05-14  
   last obs. used      2017-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37469  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Jul-29 06:21:58  

Additional Information
 Earth MOID = .112428 au 
 Jupiter MOID = 4.16102 au 
 T_jup = 6.027 
[ 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 16.6   n/a MPO337298  
diameter diameter 0.935 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 2.8233 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Harris, A.W. (2014) Minor Planet Bull. 41, 224-226.]
geometric albedo albedo 0.507   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

5381 Sekhmet (1991 JY)          Discovered 1991-May-14 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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