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79470 (1998 AE4)
Classification: Main-belt Asteroid          SPK-ID: 2079470
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1183909336100471 5.1751e-08  
a 3.011223556015974 2.0796e-08 au
q 2.654721987910677 1.5611e-07 au
i 2.005736901227838 4.8347e-06 deg
node 321.2186720416206 0.0001549 deg
peri 264.6994741562074 0.00015634 deg
M 4.419967976129596 2.0146e-05 deg
tp 2458977.066910698874
(2020-May-07.56691070)
0.00010684 TDB
period 1908.591237304021
5.23
1.9771e-05
5.413e-08
d
yr
n .1886207968284072 1.954e-09 deg/d
Q 3.367725124121271 2.3258e-08 au
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      8156 days (22.33 yr)  
   first obs. used      1997-12-29  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56095  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:40:41  

Additional Information
 Earth MOID = 1.64628 au 
 Jupiter MOID = 1.62717 au 
 T_jup = 3.238 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457197.5 (2015-Jun-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179343144530781 5.1701e-08  
q 2.65659890355214 1.5584e-07 au
tp 2457064.002865878075
(2015-Feb-10.50286588)
0.00011168 TDB
node 321.2657566175282 0.00015488 deg
peri 264.025610401935 0.00015633 deg
i 2.005812312391475 4.8344e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      8156 days (22.33 yr)  
   first obs. used      1997-12-29  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56095  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:40:41  

Additional Information
 Jupiter MOID = 1.62717 au 
 T_jup = 3.238 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.673001941483508E-15 -8.000990686646763E-15 1.246883574387592E-13 7.722806917948672E-15 9.857097060945094E-14 -4.147320943106377E-16
q -8.000990686646763E-15 2.428676588604751E-14 -9.933892481136155E-13 -1.518724713244094E-14 -4.151897303595667E-13 9.248034302471714E-16
tp 1.246883574387592E-13 -9.933892481136155E-13 1.247315768918072E-8 -2.13639692595059E-13 2.418415387254547E-9 6.52293865729064E-13
node 7.722806917948672E-15 -1.518724713244094E-14 -2.13639692595059E-13 2.398747730980955E-8 -2.397143736821739E-8 2.869097560600605E-11
peri 9.857097060945094E-14 -4.151897303595667E-13 2.418415387254547E-9 -2.397143736821739E-8 2.444001688364701E-8 -2.8587891948217E-11
i -4.147320943106377E-16 9.248034302471714E-16 6.52293865729064E-13 2.869097560600605E-11 -2.8587891948217E-11 2.337160201994067E-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 15.4   n/a MPO432344  
diameter diameter 3.226 km 0.817 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.098   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79470 (1998 AE4)          Discovered 1998-Jan-02 by Spacewatch at Kitt Peak
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1998 AE4 = 2000 QJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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