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74988 (1999 TN258)
Classification: Main-belt Asteroid          SPK-ID: 2074988
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 .1025589696497141 6.3613e-08  
a 2.199231027741638 1.0988e-08 au
q 1.973680159514773 1.4071e-07 au
i 3.388451050883091 6.8401e-06 deg
node 329.8057006878397 7.1984e-05 deg
peri 329.7033324977457 7.566e-05 deg
M 179.6110596943307 2.2092e-05 deg
tp 2458406.159558643856
(2018-Oct-14.65955864)
7.2617e-05 TDB
period 1191.254921898139
3.26
8.9276e-06
2.444e-08
d
yr
n .3022023190690184 2.2648e-09 deg/d
Q 2.424781895968501 1.2115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      383  
   data-arc span      7425 days (20.33 yr)  
   first obs. used      1999-09-30  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61557  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:19  

Additional Information
 Earth MOID = .958977 au 
 Jupiter MOID = 2.73744 au 
 T_jup = 3.657 
[ 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 16.7   n/a MPO453162  

74988 (1999 TN258)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TN258 = 2002 OD22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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