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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .100872965926994 4.7933e-08  
a 2.96401047694152 2.2605e-08 au
q 2.665021949093744 1.3509e-07 au
i 9.545888743705733 4.8955e-06 deg
node 305.1899719449763 2.8149e-05 deg
peri 51.00160188929507 3.7708e-05 deg
M 75.71549697407207 2.426e-05 deg
tp 2458608.487148394319
(2019-May-04.98714839)
0.00012563 TDB
period 1863.880344421061
5.10
2.1322e-05
5.838e-08
d
yr
n .1931454457779689 2.2095e-09 deg/d
Q 3.262999004789295 2.4885e-08 au
  Orbit Determination Parameters
   # obs. used (total)      883  
   data-arc span      8126 days (22.25 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51415  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:28:43  

Additional Information
 Earth MOID = 1.67139 au 
 Jupiter MOID = 2.15855 au 
 T_jup = 3.237 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457108.5 (2015-Mar-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1017847364040378 4.88e-08  
q 2.660457961558509 1.3784e-07 au
tp 2456732.694147169132
(2014-Mar-16.19414717)
0.00012457 TDB
node 305.4971375844095 2.8061e-05 deg
peri 48.5081579937353 3.7353e-05 deg
i 9.566841113495135 4.9019e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      883  
   data-arc span      8126 days (22.25 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51415  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:28:43  

Additional Information
 Jupiter MOID = 2.15855 au 
 T_jup = 3.237 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.381476549499222E-15 -6.666522223049586E-15 -7.057515490014957E-13 -9.95596348081408E-15 -1.918251656159973E-13 -2.657105027280337E-15
q -6.666522223049586E-15 1.899899884546782E-14 1.735602081685445E-12 2.549676550712315E-14 5.03626398434976E-13 8.460765499416071E-15
tp -7.057515490014957E-13 1.735602081685445E-12 1.551889370833444E-8 -6.44926936473336E-13 3.09618798957299E-9 -6.224544012580113E-12
node -9.95596348081408E-15 2.549676550712315E-14 -6.44926936473336E-13 7.873959910658355E-10 -7.756541903637719E-10 -5.57653277647469E-12
peri -1.918251656159973E-13 5.03626398434976E-13 3.09618798957299E-9 -7.756541903637719E-10 1.39526807330992E-9 4.236144829048708E-12
i -2.657105027280337E-15 8.460765499416071E-15 -6.224544012580113E-12 -5.57653277647469E-12 4.236144829048708E-12 2.402873102827757E-11

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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