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59498 (1999 JG8)
Classification: Main-belt Asteroid          SPK-ID: 2059498
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09999900412280541 4.5466e-08  
a 2.470243330579934 1.2028e-08 au
q 2.223221457580939 1.1508e-07 au
i 24.38463180322795 5.4398e-06 deg
node 201.1631167543433 9.6877e-06 deg
peri 331.5447140588981 2.5415e-05 deg
M 210.6160273544845 2.4954e-05 deg
tp 2459588.949954899473
(2022-Jan-09.44995490)
9.8964e-05 TDB
period 1418.103830097666
3.88
1.0357e-05
2.836e-08
d
yr
n .2538601140194414 1.8541e-09 deg/d
Q 2.71726520357893 1.3231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1308  
   data-arc span      7891 days (21.60 yr)  
   first obs. used      1999-03-24  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44665  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:46:30  

Additional Information
 Earth MOID = 1.23854 au 
 Jupiter MOID = 2.27272 au 
 T_jup = 3.355 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457513.5 (2016-May-05.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09922054351411354 4.5624e-08  
q 2.22592881587505 1.1543e-07 au
tp 2458171.291621858815
(2018-Feb-21.79162186)
9.823e-05 TDB
node 201.1940943585375 9.6799e-06 deg
peri 331.6719217710422 2.5513e-05 deg
i 24.39187675079355 5.4412e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1308  
   data-arc span      7891 days (21.60 yr)  
   first obs. used      1999-03-24  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44665  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:46:30  

Additional Information
 Jupiter MOID = 2.27272 au 
 T_jup = 3.355 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.081552037406316E-15 -5.243876181842082E-15 3.739553799811597E-13 3.482217864702948E-15 1.330694008695646E-13 5.229799156354204E-15
q -5.243876181842082E-15 1.33234030470355E-14 -8.503763163445716E-13 -9.114133589339875E-15 -3.281805045916974E-13 -1.272359822645363E-14
tp 3.739553799811597E-13 -8.503763163445716E-13 9.649114592382693E-9 -8.065010238504378E-12 2.325095319730711E-9 -1.673834412319502E-11
node 3.482217864702948E-15 -9.114133589339875E-15 -8.065010238504378E-12 9.370058673281266E-11 -8.665283894926586E-11 -4.383997670517513E-13
peri 1.330694008695646E-13 -3.281805045916974E-13 2.325095319730711E-9 -8.665283894926586E-11 6.508913816874986E-10 -3.464680042422064E-12
i 5.229799156354204E-15 -1.272359822645363E-14 -1.673834412319502E-11 -4.383997670517513E-13 -3.464680042422064E-12 2.960715104648261E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO449383  
diameter diameter 3.637 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.212   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59498 (1999 JG8)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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