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58918 (1998 KB54)
Classification: Main-belt Asteroid          SPK-ID: 2058918
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06926047310682329 3.8172e-08  
a 2.613883084707193 1.3669e-08 au
q 2.43284430561445 9.8752e-08 au
i 9.737482272740463 4.1587e-06 deg
node 154.6431989557041 2.0459e-05 deg
peri 346.6901007593618 3.8834e-05 deg
M 219.2378850143855 3.6062e-05 deg
tp 2459804.046793759263
(2022-Aug-12.54679376)
0.00015742 TDB
period 1543.574745062191
4.23
1.2107e-05
3.315e-08
d
yr
n .2332248575273856 1.8294e-09 deg/d
Q 2.794921863799936 1.4615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-05-23  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57192  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:33:35  

Additional Information
 Earth MOID = 1.44585 au 
 Jupiter MOID = 2.20258 au 
 T_jup = 3.384 
[ 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 15.06   n/a E2021B10  
diameter diameter 2.289 km 0.454 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.405   0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58918 (1998 KB54)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KB54 = 1999 RH217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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