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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354500550343954 3.5213e-08  
a 2.409314473621774 8.6542e-09 au
q 2.08297269557454 8.7379e-08 au
i 5.170919211282567 4.0284e-06 deg
node 144.5117148471429 4.8624e-05 deg
peri 344.2193347349531 5.2126e-05 deg
M 279.8624406516589 1.9639e-05 deg
tp 2459504.569088343700
(2021-Oct-17.06908834)
7.5372e-05 TDB
period 1365.962136779227
3.74
7.3597e-06
2.015e-08
d
yr
n .2635504969770512 1.42e-09 deg/d
Q 2.735656251669009 9.8264e-09 au
  Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      22052 days (60.38 yr)  
   first obs. used      1960-09-28  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5269  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:43  

Additional Information
 Earth MOID = 1.09825 au 
 Jupiter MOID = 2.30756 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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