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101023 (1998 QB61)
Classification: Main-belt Asteroid          SPK-ID: 2101023
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1009733445290226 4.7874e-08  
a 2.964426710056637 2.0691e-08 au
q 2.665098630531051 1.3428e-07 au
i 9.545933100528741 4.8843e-06 deg
node 305.1896927606683 2.326e-05 deg
peri 51.08432916987544 3.2287e-05 deg
M 114.2430172035594 2.2773e-05 deg
tp 2458608.888418674858
(2019-May-05.38841867)
0.00011685 TDB
period 1864.272972566548
5.10
1.9518e-05
5.344e-08
d
yr
n .1931047680771703 2.0218e-09 deg/d
Q 3.263754789582223 2.278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1041  
   data-arc span      8236 days (22.55 yr)  
   first obs. used      1998-08-17  
   last obs. used      2021-03-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48752  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:50  

Additional Information
 Earth MOID = 1.6698 au 
 Jupiter MOID = 2.1583 au 
 T_jup = 3.236 
[ 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 14.6   n/a MPO502724  
diameter diameter 4.667 km 0.251 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.107   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101023 (1998 QB61)          Discovered 1998-Aug-23 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QB61 = 2003 NL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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