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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048927740463431 3.4339e-08  
a 2.55404745506307 1.0404e-08 au
q 2.286146332455502 8.3762e-08 au
i 10.98386243329542 3.8864e-06 deg
node 203.109162133768 1.854e-05 deg
peri 298.3128919855075 2.7029e-05 deg
M 93.95573115531838 2.1514e-05 deg
tp 2459007.398731934807
(2020-Jun-06.89873193)
8.8523e-05 TDB
period 1490.87719057722
4.08
9.1101e-06
2.494e-08
d
yr
n .2414685812321131 1.4755e-09 deg/d
Q 2.821948577670638 1.1496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      9797 days (26.82 yr)  
   first obs. used      1994-10-10  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50181  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:44:49  

Additional Information
 Earth MOID = 1.32045 au 
 Jupiter MOID = 2.2341 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 14.70   n/a MPO637055  
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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