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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1008729658374888 4.7934e-08  
a 2.964010477200372 2.2616e-08 au
q 2.66502194959178 1.351e-07 au
i 9.545888738132707 4.8956e-06 deg
node 305.1899716859276 2.8172e-05 deg
peri 51.0016018457453 3.7735e-05 deg
M 75.71549718677464 2.4269e-05 deg
tp 2458608.487147241710
(2019-May-04.98714724)
0.00012568 TDB
period 1863.880344665225
5.10
2.1333e-05
5.841e-08
d
yr
n .1931454457526673 2.2106e-09 deg/d
Q 3.262999004808964 2.4898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      8106 days (22.19 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:53  

Additional Information
 Earth MOID = 1.67139 au 
 Jupiter MOID = 2.15855 au 
 T_jup = 3.237 
[ 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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