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74308 (1998 TN31)
Classification: Main-belt Asteroid          SPK-ID: 2074308
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1052929419317169 4.8543e-08  
a 2.554678171495889 1.4704e-08 au
q 2.285688591130348 1.2085e-07 au
i 10.98346707002415 5.0458e-06 deg
node 203.1221494103935 2.3877e-05 deg
peri 298.5046911450075 3.3836e-05 deg
M 261.6199934047888 2.8496e-05 deg
tp 2459008.074560772844
(2020-Jun-07.57456077)
0.00012005 TDB
period 1491.429477962305
4.08
1.2877e-05
3.526e-08
d
yr
n .2413791636275401 2.084e-09 deg/d
Q 2.82366775186143 1.6253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      999  
   data-arc span      9163 days (25.09 yr)  
   first obs. used      1994-10-10  
   last obs. used      2019-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54622  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:46:04  

Additional Information
 Earth MOID = 1.31959 au 
 Jupiter MOID = 2.23523 au 
 T_jup = 3.405 
[ 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 14.6   n/a MPO417339  
diameter diameter 3.049 km 0.521 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.301   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74308 (1998 TN31)          Discovered 1998-Oct-11 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 TN31 = 2000 CX103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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