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JPL Small-Body Database Browser
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19538 (1999 JD12)
Classification: Main-belt Asteroid          SPK-ID: 2019538
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2699227087164953 3.3726e-08  
a 2.399053613646379 9.2586e-09 au
q 1.751494563894852 7.9248e-08 au
i 22.92891486161614 5.3338e-06 deg
node 176.8243971164157 9.4771e-06 deg
peri 105.414689958969 1.3617e-05 deg
M 219.627377714561 1.1641e-05 deg
tp 2459529.722462830227
(2021-Nov-11.22246283)
4.5928e-05 TDB
period 1357.245334004453
3.72
7.857e-06
2.151e-08
d
yr
n .2652431295805942 1.5355e-09 deg/d
Q 3.046612663397906 1.1758e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1691  
   data-arc span      14564 days (39.87 yr)  
   first obs. used      1980-03-16  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:50:13  

Additional Information
 Earth MOID = .87183 au 
 Jupiter MOID = 2.5693 au 
 T_jup = 3.373 
[ show covariance matrix ]

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 MPO459001  
diameter diameter 3.701 km 0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.448   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19538 (1999 JD12)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JD12 = 1980 FC5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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