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58957 (1998 QE91)
Classification: Main-belt Asteroid          SPK-ID: 2058957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3539659510919781 5.3192e-08  
a 3.165712710261051 2.2952e-08 au
q 2.045158199889535 1.6758e-07 au
i 21.3452827647357 7.2344e-06 deg
node 8.147234032076881 1.3107e-05 deg
peri 302.646174337056 1.6696e-05 deg
M 8.017925880709099 1.2981e-05 deg
tp 2459154.678931402172
(2020-Nov-01.17893140)
7.3898e-05 TDB
period 2057.338137149164
5.63
2.2374e-05
6.126e-08
d
yr
n .1749833892151773 1.903e-09 deg/d
Q 4.286267220632569 3.1076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      611  
   data-arc span      10705 days (29.31 yr)  
   first obs. used      1991-04-06  
   last obs. used      2020-07-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:33:52  

Additional Information
 Earth MOID = 1.10916 au 
 Jupiter MOID = 1.57205 au 
 T_jup = 3.003 
[ 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 14.38   n/a E2021B10  
diameter diameter 5.473 km 1.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.093   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

58957 (1998 QE91)          Discovered 1998-Aug-28 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

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