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79469 (1998 AH2)
Classification: Main-belt Asteroid          SPK-ID: 2079469
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08271727024602546 4.3513e-08  
a 3.075524773057187 1.9343e-08 au
q 2.821125759255869 1.3292e-07 au
i 11.0479936112239 4.3647e-06 deg
node 109.1648012299495 2.4132e-05 deg
peri 306.667025643465 3.64e-05 deg
M 101.7595930775313 2.6618e-05 deg
tp 2458443.634731300875
(2018-Nov-21.13473130)
0.00014574 TDB
period 1970.050102096461
5.39
1.8585e-05
5.088e-08
d
yr
n .1827364692993849 1.7239e-09 deg/d
Q 3.329923786858505 2.0943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1052  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-01-01  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58256  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:23:09  

Additional Information
 Earth MOID = 1.85055 au 
 Jupiter MOID = 1.95102 au 
 T_jup = 3.196 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457047.5 (2015-Jan-25.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08222221555278116 4.3378e-08  
q 2.823690582358838 1.327e-07 au
tp 2456480.150074940100
(2013-Jul-06.65007494)
0.00014889 TDB
node 109.1953319774929 2.4123e-05 deg
peri 307.9131571707164 3.6557e-05 deg
i 11.04859807204278 4.3649e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1052  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-01-01  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58256  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:23:09  

Additional Information
 Jupiter MOID = 1.95102 au 
 T_jup = 3.196 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.881677705367373E-15 -5.705356378821837E-15 -8.682173335609055E-13 -5.693831600839998E-15 -2.038106166153503E-13 -8.89181535720665E-16
q -5.705356378821837E-15 1.760995179685142E-14 2.178747945749385E-12 1.526489557065162E-14 5.520556322375004E-13 3.165361555487697E-15
tp -8.682173335609055E-13 2.178747945749385E-12 2.216685170909943E-8 8.355105203139536E-12 4.114037210216284E-9 -4.554104381299353E-12
node -5.693831600839998E-15 1.526489557065162E-14 8.355105203139536E-12 5.819417907327605E-10 -5.694372926059799E-10 -2.009961111929372E-12
peri -2.038106166153503E-13 5.520556322375004E-13 4.114037210216284E-9 -5.694372926059799E-10 1.33641315723782E-9 1.196668677308953E-12
i -8.89181535720665E-16 3.165361555487697E-15 -4.554104381299353E-12 -2.009961111929372E-12 1.196668677308953E-12 1.905275871106626E-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 14.3   n/a MPO417373  
diameter diameter 4.956 km 0.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.150   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79469 (1998 AH2)          Discovered 1998-Jan-01 by Spacewatch at Kitt Peak
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1998 AH2 = 2001 PF24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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