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100244 (1994 QB)
Classification: Main-belt Asteroid          SPK-ID: 2100244
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2887015017870987 5.7101e-08  
a 3.139061091983434 3.1791e-08 au
q 2.232809440526367 1.8491e-07 au
i 24.61968870384728 6.9076e-06 deg
node 111.5289561615037 1.2238e-05 deg
peri 215.5120934658926 1.5638e-05 deg
M 274.4481782043857 1.113e-05 deg
tp 2459683.252843098117
(2022-Apr-13.75284310)
6.8122e-05 TDB
period 2031.412305053117
5.56
3.086e-05
8.449e-08
d
yr
n .1772166089102167 2.6921e-09 deg/d
Q 4.0453127434405 4.0969e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      9406 days (25.75 yr)  
   first obs. used      1994-08-16  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51552  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:07:14  

Additional Information
 Earth MOID = 1.25313 au 
 Jupiter MOID = 1.41252 au 
 T_jup = 3.010 
[ 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 14.74   n/a E2021B55  
diameter diameter 6.363 km 0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.026   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

100244 (1994 QB)          Discovered 1994-Aug-16 by Garradd, G. J. at Siding Spring
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1994 QB = 2004 HC54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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