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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06866929575547272 3.8637e-08  
a 2.615369694184621 1.3929e-08 au
q 2.435774099144757 9.9957e-08 au
i 9.733946554731915 4.2082e-06 deg
node 154.6445380564036 2.1234e-05 deg
peri 346.5735971914828 3.9701e-05 deg
M 172.7267073214408 3.6412e-05 deg
tp 2458259.266479888976
(2018-May-20.76647989)
0.00015303 TDB
period 1544.891762125573
4.23
1.2342e-05
3.379e-08
d
yr
n .2330260338139717 1.8616e-09 deg/d
Q 2.794965289224484 1.4885e-08 au
  Orbit Determination Parameters
   # obs. used (total)      903  
   data-arc span      8183 days (22.40 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56883  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:49:00  

Additional Information
 Earth MOID = 1.44894 au 
 Jupiter MOID = 2.20339 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 15.0   n/a MPO436194  
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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