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74538 (1999 JS12)
Classification: Main-belt Asteroid          SPK-ID: 2074538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09101541898870549 4.611e-08  
a 3.193142367860356 2.0453e-08 au
q 2.902517177358959 1.473e-07 au
i 20.36714516419303 5.7271e-06 deg
node 63.04337877967647 1.3559e-05 deg
peri 272.3258611240043 3.5129e-05 deg
M 142.3502039267887 3.4314e-05 deg
tp 2458176.397098781717
(2018-Feb-26.89709878)
0.00019749 TDB
period 2084.135015297654
5.71
2.0024e-05
5.482e-08
d
yr
n .1727335308689611 1.6596e-09 deg/d
Q 3.483767558361754 2.2315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1579  
   data-arc span      7684 days (21.04 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47689  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:06:27  

Additional Information
 Earth MOID = 1.98712 au 
 Jupiter MOID = 1.8802 au 
 T_jup = 3.092 
[ show covariance matrix ]

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 12.9   n/a MPO459337  
diameter diameter 10.065 km 0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.110   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74538 (1999 JS12)          Discovered 1999-May-14 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JS12 = 2001 QO147 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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