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118324 (1998 XB57)
Classification: Main-belt Asteroid          SPK-ID: 2118324
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1353145861555163 4.5041e-08  
a 2.409373094210421 9.7974e-09 au
q 2.083349771073102 1.0815e-07 au
i 5.17082313966977 4.9394e-06 deg
node 144.5108055848463 5.3251e-05 deg
peri 344.2278345375786 5.6483e-05 deg
M 227.1299850615926 1.9555e-05 deg
tp 2459504.672315157601
(2021-Oct-17.17231516)
7.5611e-05 TDB
period 1366.011989543861
3.74
8.3321e-06
2.281e-08
d
yr
n .2635408786713588 1.6075e-09 deg/d
Q 2.73539641734774 1.1123e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      21854 days (59.83 yr)  
   first obs. used      1960-09-28  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53694  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:02:45  

Additional Information
 Earth MOID = 1.09871 au 
 Jupiter MOID = 2.30841 au 
 T_jup = 3.503 
[ 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 15.9   n/a MPO236848  
diameter diameter 1.752 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118324 (1998 XB57)          Discovered 1998-Dec-15 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1998 XB57 = 2001 RM108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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