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181863 (1998 XB100)
Classification: Main-belt Asteroid          SPK-ID: 2181863
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2976298637127862 1.4929e-07  
a 2.540966441310997 2.0458e-08 au
q 1.784698945684841 3.9144e-07 au
i 13.22071027883388 1.0128e-05 deg
node 339.6345876658439 2.5562e-05 deg
peri 64.2424505458044 3.2321e-05 deg
M 176.1615612932201 2.3052e-05 deg
tp 2458476.555170231709
(2018-Dec-24.05517023)
8.7129e-05 TDB
period 1479.438174839879
4.05
1.7867e-05
4.892e-08
d
yr
n .2433356162645751 2.9387e-09 deg/d
Q 3.297233936937152 2.6547e-08 au
  Orbit Determination Parameters
   # obs. used (total)      904  
   data-arc span      7827 days (21.43 yr)  
   first obs. used      1998-12-12  
   last obs. used      2020-05-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48725  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:22  

Additional Information
 Earth MOID = .834384 au 
 Jupiter MOID = 2.33175 au 
 T_jup = 3.347 
[ 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 15.29   n/a E2021B55  
diameter diameter 3.582 km 0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.117   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181863 (1998 XB100)          Discovered 1998-Dec-12 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1998 XB100 = 2006 QQ144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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