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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782995669228945 4.4262e-08  
a 2.422472875078573 1.3623e-08 au
q 1.990547010569604 1.0918e-07 au
i 7.726725697260432 6.2477e-06 deg
node 337.9232868832441 3.0462e-05 deg
peri 323.971862096337 3.4438e-05 deg
M 310.2453149808351 1.6971e-05 deg
tp 2459190.834840108562
(2020-Dec-07.33484011)
6.5432e-05 TDB
period 1377.167645874738
3.77
1.1617e-05
3.181e-08
d
yr
n .2614060830417913 2.205e-09 deg/d
Q 2.854398739587542 1.6052e-08 au
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      9896 days (27.09 yr)  
   first obs. used      1993-03-25  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5473  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:51:16  

Additional Information
 Earth MOID = .981441 au 
 Jupiter MOID = 2.40886 au 
 T_jup = 3.479 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456944.5 (2014-Oct-14.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1786566471132287 4.4269e-08  
q 1.98965119695084 1.0905e-07 au
tp 2456433.669588613323
(2013-May-21.16958861)
6.112e-05 TDB
node 337.9634180142052 3.0475e-05 deg
peri 323.475128620525 3.441e-05 deg
i 7.726680001469679 6.2433e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      9896 days (27.09 yr)  
   first obs. used      1993-03-25  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5473  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:51:16  

Additional Information
 Jupiter MOID = 2.40886 au 
 T_jup = 3.479 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.959736570663124E-15 -4.802164693266297E-15 1.330078931858458E-12 7.882056021272681E-15 3.25508657555669E-13 3.165520259966237E-16
q -4.802164693266297E-15 1.189249757479407E-14 -3.226465154451508E-12 -1.896844309817002E-14 -7.779168277041762E-13 -6.561000158761227E-16
tp 1.330078931858458E-12 -3.226465154451508E-12 3.735630024974756E-9 2.742145015139296E-12 9.852647556143218E-10 -1.978092486906144E-12
node 7.882056021272681E-15 -1.896844309817002E-14 2.742145015139296E-12 9.287479775505017E-10 -9.193702024080862E-10 4.679502534342383E-11
peri 3.25508657555669E-13 -7.779168277041762E-13 9.852647556143218E-10 -9.193702024080862E-10 1.184063829844531E-9 -4.689007945309336E-11
i 3.165520259966237E-16 -6.561000158761227E-16 -1.978092486906144E-12 4.679502534342383E-11 -4.689007945309336E-11 3.897875393236635E-11

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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