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74930 (1999 TL156)
Classification: Main-belt Asteroid          SPK-ID: 2074930
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1529582500556628 4.4047e-08  
a 2.258935380000893 8.5736e-09 au
q 1.913412577287133 1.0123e-07 au
i 6.933666136598069 5.3944e-06 deg
node 29.72370364508011 3.4888e-05 deg
peri 308.2630070148645 3.8139e-05 deg
M 66.27035018005795 1.482e-05 deg
tp 2458772.218402628216
(2019-Oct-15.71840263)
5.101e-05 TDB
period 1240.092663318567
3.40
7.06e-06
1.933e-08
d
yr
n .2903008869003522 1.6527e-09 deg/d
Q 2.604458182714653 9.885e-09 au
  Orbit Determination Parameters
   # obs. used (total)      704  
   data-arc span      7888 days (21.60 yr)  
   first obs. used      1998-03-29  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55604  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:49:54  

Additional Information
 Earth MOID = .91418 au 
 Jupiter MOID = 2.78742 au 
 T_jup = 3.596 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO436307  

74930 (1999 TL156)          Discovered 1999-Oct-15 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TL156 = 1998 HN55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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