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JPL Small-Body Database Browser
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59155 (1998 XL99)
Classification: Main-belt Asteroid          SPK-ID: 2059155
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1903111913730564 5.7257e-08  
a 3.166546419642899 3.1531e-08 au
q 2.563917197982572 1.822e-07 au
i 6.08569584023539 5.8571e-06 deg
node 77.24392648318099 6.02e-05 deg
peri 229.9929734989918 6.2184e-05 deg
M 317.5942524390015 1.771e-05 deg
tp 2458842.937299706673
(2019-Dec-25.43729971)
0.00010304 TDB
period 2058.150909115753
5.63
3.0741e-05
8.416e-08
d
yr
n .1749142875799459 2.6126e-09 deg/d
Q 3.769175641303225 3.7532e-08 au
  Orbit Determination Parameters
   # obs. used (total)      296  
   data-arc span      9324 days (25.53 yr)  
   first obs. used      1992-10-01  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66285  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:30:30  

Additional Information
 Earth MOID = 1.55356 au 
 Jupiter MOID = 1.51097 au 
 T_jup = 3.166 
[ 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 15.3   n/a MPO436195  
diameter diameter 4.353 km 1.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59155 (1998 XL99)          Discovered 1998-Dec-15 by ODAS at Caussols
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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