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101558 (1999 AE8)
Classification: Main-belt Asteroid          SPK-ID: 2101558
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03589159986368012 4.868e-08  
a 2.514371142251477 1.1147e-08 au
q 2.424126339305003 1.1795e-07 au
i 11.55077607339766 5.0151e-06 deg
node 338.6094278298035 1.7238e-05 deg
peri 213.6992283837864 6.3382e-05 deg
M 126.310823788012 6.0608e-05 deg
tp 2458689.547452184381
(2019-Jul-25.04745218)
0.00024511 TDB
period 1456.272009771191
3.99
9.684e-06
2.651e-08
d
yr
n .2472065641476987 1.6439e-09 deg/d
Q 2.604615945197952 1.1547e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1999-01-13  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4963  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:52  

Additional Information
 Earth MOID = 1.43344 au 
 Jupiter MOID = 2.38112 au 
 T_jup = 3.431 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456918.5 (2014-Sep-18.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03607413475517029 4.8746e-08  
q 2.423527620224033 1.1825e-07 au
tp 2457226.897899980175
(2015-Jul-23.39789998)
0.00024145 TDB
node 338.6863833514832 1.7267e-05 deg
peri 211.9041498899275 6.2622e-05 deg
i 11.54161110370066 5.011e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1999-01-13  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4963  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:59:52  

Additional Information
 Jupiter MOID = 2.38112 au 
 T_jup = 3.431 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.376188039324604E-15 -5.745786178960239E-15 -3.487753288787198E-12 -1.477725887979339E-14 -7.917744419998567E-13 7.292360625397209E-15
q -5.745786178960239E-15 1.398384300623762E-14 8.836430435572332E-12 3.558399739198066E-14 2.011567166205917E-12 -1.79488959183657E-14
tp -3.487753288787198E-12 8.836430435572332E-12 5.82971195504934E-8 -2.053877794619221E-12 1.453700148277856E-8 -2.657275513916167E-11
node -1.477725887979339E-14 3.558399739198066E-14 -2.053877794619221E-12 2.981627056546982E-10 -2.926225488672536E-10 -8.315461170623881E-12
peri -7.917744419998567E-13 2.011567166205917E-12 1.453700148277856E-8 -2.926225488672536E-10 3.921559080981383E-9 1.722681247702676E-12
i 7.292360625397209E-15 -1.79488959183657E-14 -2.657275513916167E-11 -8.315461170623881E-12 1.722681247702676E-12 2.511017298190019E-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 14.02   n/a E2021B55  
diameter diameter 9.405 km 0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101558 (1999 AE8)          Discovered 1999-Jan-13 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 AE8 = 2001 QB137 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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