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58916 (1998 KM50)
Classification: Main-belt Asteroid          SPK-ID: 2058916
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812167963221687 4.0691e-08  
a 3.119047069412495 2.2155e-08 au
q 2.553823351915514 1.3587e-07 au
i 16.75892519323598 6.4124e-06 deg
node 175.831453167629 1.8129e-05 deg
peri 116.3269285146772 2.7076e-05 deg
M 315.946071513213 1.9522e-05 deg
tp 2459246.714406996953
(2021-Feb-01.21440700)
0.00010921 TDB
period 2012.015490184673
5.51
2.1437e-05
5.869e-08
d
yr
n .1789250638259039 1.9064e-09 deg/d
Q 3.684270786909476 2.6169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      685  
   data-arc span      8558 days (23.43 yr)  
   first obs. used      1997-03-11  
   last obs. used      2020-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57274  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:49:03  

Additional Information
 Earth MOID = 1.58984 au 
 Jupiter MOID = 1.91769 au 
 T_jup = 3.126 
[ 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 14.6   n/a MPO468490  
diameter diameter 6.247 km 0.392 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58916 (1998 KM50)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 KM50 = 1999 RA85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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