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74957 (1999 TN196)
Classification: Main-belt Asteroid          SPK-ID: 2074957
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1269636140878753 3.9358e-08  
a 2.569829572509096 1.3134e-08 au
q 2.243554722393442 9.6189e-08 au
i 12.94526158104897 5.118e-06 deg
node 231.6116293885325 2.4893e-05 deg
peri 42.86686943850849 4.1402e-05 deg
M 117.2412193501529 3.0387e-05 deg
tp 2458510.458640049307
(2019-Jan-26.95864005)
0.00012722 TDB
period 1504.71728765775
4.12
1.1536e-05
3.158e-08
d
yr
n .239247600165728 1.8342e-09 deg/d
Q 2.896104422624751 1.4802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      7409 days (20.28 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5316  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:41  

Additional Information
 Earth MOID = 1.24532 au 
 Jupiter MOID = 2.20308 au 
 T_jup = 3.384 
[ 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 15.5   n/a MPO436307  
diameter diameter 1.983 km 0.356 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.236   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74957 (1999 TN196)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TN196 = 2002 LG11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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