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49154 (1998 SM53)
Classification: Main-belt Asteroid          SPK-ID: 2049154
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782995735586642 3.829e-08  
a 2.422472876818281 1.2522e-08 au
q 1.990546995924151 9.7369e-08 au
i 7.726722693368067 5.0616e-06 deg
node 337.9232855615679 3.0413e-05 deg
peri 323.9718655136498 3.3888e-05 deg
M 310.2453119664543 1.4568e-05 deg
tp 2459190.834851845007
(2020-Dec-07.33485185)
5.5945e-05 TDB
period 1377.167647358265
3.77
1.0678e-05
2.923e-08
d
yr
n .2614060827601967 2.0269e-09 deg/d
Q 2.85439875771241 1.4755e-08 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      9946 days (27.23 yr)  
   first obs. used      1993-03-25  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5265  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:51:49  

Additional Information
 Earth MOID = .981441 au 
 Jupiter MOID = 2.40886 au 
 T_jup = 3.479 
[ 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 15.7   n/a MPO270384  

49154 (1998 SM53)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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