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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03589160045352149 4.8594e-08  
a 2.514371142764562 1.1105e-08 au
q 2.424126338316592 1.1778e-07 au
i 11.55077601614029 5.0125e-06 deg
node 338.6094279310365 1.7185e-05 deg
peri 213.6992283635567 6.3305e-05 deg
M 126.3108235859168 6.0531e-05 deg
tp 2458689.547452845498
(2019-Jul-25.04745285)
0.00024481 TDB
period 1456.272010216943
3.99
9.6474e-06
2.641e-08
d
yr
n .247206564072031 1.6377e-09 deg/d
Q 2.604615947212532 1.1503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1856  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1999-01-13  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49525  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:23  

Additional Information
 Earth MOID = 1.43344 au 
 Jupiter MOID = 2.38112 au 
 T_jup = 3.431 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456928.5 (2014-Sep-28.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03606301209984283 4.8673e-08  
q 2.423606107725813 1.1811e-07 au
tp 2457226.758273654869
(2015-Jul-23.25827366)
0.00024117 TDB
node 338.6855016077756 1.7213e-05 deg
peri 211.8663119240459 6.254e-05 deg
i 11.54177479026613 5.0085e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1856  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1999-01-13  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49525  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:23  

Additional Information
 Jupiter MOID = 2.38112 au 
 T_jup = 3.431 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.369036428366479E-15 -5.730337510656793E-15 -3.515687728190269E-12 -1.492293597069303E-14 -7.982461154930439E-13 7.240711909133388E-15
q -5.730337510656793E-15 1.395055159988175E-14 8.897593715871583E-12 3.591552478608466E-14 2.025707434157981E-12 -1.782657309307652E-14
tp -3.515687728190269E-12 8.897593715871583E-12 5.816169881418936E-8 -6.960095100465554E-13 1.450313002468399E-8 -2.637130001904264E-11
node -1.492293597069303E-14 3.591552478608466E-14 -6.960095100465554E-13 2.962840713020343E-10 -2.904464220466915E-10 -8.426098464190338E-12
peri -7.982461154930439E-13 2.025707434157981E-12 1.450313002468399E-8 -2.904464220466915E-10 3.911273961255434E-9 1.881302719910648E-12
i 7.240711909133388E-15 -1.782657309307652E-14 -2.637130001904264E-11 -8.426098464190338E-12 1.881302719910648E-12 2.508490219550809E-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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1925-Apr-09 22:26 00:02 Amphi 0.0426490208162913 0.0426307246910406 0.042667317030813 2.97841775563888 2.97841771038265 2424250.434823755 2.17170305011898 916.952728017813 66.4888482335673 -6.18135607685738 12421.6740890586 T 30 CATAB v2.0f-lin.ifort 2021-Apr-13 15:37:27 2021-Apr-13 15:37
2092-Aug-19 16:44 00:01 Amphi 0.0260695573843177 0.0260500663151756 0.0260890489990605 2.62236225181872 2.62236216772826 2485379.197325611 1.34574746906302 988.707018847101 74.5993615856325 -10.9816521336756 10671.2317260366 T 30 CATAB v2.0f-lin.ifort 2021-Apr-13 15:37:27 2021-Apr-13 15:37

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