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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1051369223006736 4.3848e-08  
a 2.554797816586547 1.1913e-08 au
q 2.286194237050156 1.1198e-07 au
i 10.98239969258701 4.5212e-06 deg
node 203.1126338293417 2.3422e-05 deg
peri 298.4122897682046 3.0786e-05 deg
M 358.2445509613613 2.23e-05 deg
tp 2459007.773089918041
(2020-Jun-07.27308992)
9.2408e-05 TDB
period 1491.534252982318
4.08
1.0433e-05
2.856e-08
d
yr
n .2413622075927396 1.6883e-09 deg/d
Q 2.823401396122938 1.3166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1069  
   data-arc span      9247 days (25.32 yr)  
   first obs. used      1994-10-10  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5304  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:14:01  

Additional Information
 Earth MOID = 1.31971 au 
 Jupiter MOID = 2.23423 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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