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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09101542445252588 4.8581e-08  
a 3.193142367615519 2.1028e-08 au
q 2.90251715968965 1.5654e-07 au
i 20.36714509786097 6.1512e-06 deg
node 63.04337917211027 1.4446e-05 deg
peri 272.3258648845499 3.7034e-05 deg
M 142.3501996286936 3.559e-05 deg
tp 2458176.397123759307
(2018-Feb-26.89712376)
0.00020538 TDB
period 2084.135015057949
5.71
2.0587e-05
5.636e-08
d
yr
n .1727335308888279 1.7062e-09 deg/d
Q 3.483767575541389 2.2941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      7573 days (20.73 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48679  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:50:32  

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

[ hide close-approach data ]
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
1905-Jun-01 00:05 00:03 Jupiter 1.96913113293911 1.96912968641352 1.96913257946482 6.14450996386067 6.07410091495933 2416997.503360987 2.77454237167672 217.992982793759 71.642388519733 88.9456309446288 2707867.20160652 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 11:51:01 2020-Jan-29 11:51
2036-Aug-06 09:53 < 00:01 Jupiter 1.89176148873855 1.8917609342621 1.89176204321553 6.0370236830892 5.96239628205648 2464911.911673405 0.6621515526333 141.36153810954 24.4081749575115 -85.4917886795737 3284928.00093133 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 11:51:01 2020-Jan-29 11:51
2178-Oct-28 03:33 00:04 Jupiter 1.90550772355801 1.90550714580474 1.90550830131127 6.1410744854926 6.06825924767938 2516858.647661232 4.14784878772201 507.575564827966 27.8501508547007 -89.8326730432057 3366418.70057414 T 26 CATAB v2.0f-lin.ifort 2020-Jan-29 11:51:01 2020-Jan-29 11:51

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