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JPL Small-Body Database Browser
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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782995545916227 4.9417e-08  
a 2.422472875532359 1.4639e-08 au
q 1.990547040814652 1.1968e-07 au
i 7.726725193665995 6.644e-06 deg
node 337.9232876042887 3.0571e-05 deg
peri 323.9718475866729 3.4923e-05 deg
M 310.2453265726778 1.8833e-05 deg
tp 2459190.834795817847
(2020-Dec-07.33479582)
7.2778e-05 TDB
period 1377.167646261702
3.77
1.2484e-05
3.418e-08
d
yr
n .26140608296834 2.3696e-09 deg/d
Q 2.854398710250066 1.725e-08 au
  Orbit Determination Parameters
   # obs. used (total)      607  
   data-arc span      9448 days (25.87 yr)  
   first obs. used      1993-03-25  
   last obs. used      2019-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55619  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:49:21  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1977-Nov-18 14:18 < 00:01 Europ 0.0282972646476061 0.0282925580105028 0.0283019713471821 5.47560556594245 5.47560549734704 2443466.095693443 0.782143518065033 244.308309568383 54.3867485771531 16.6201384893723 27760.461430018 T 25 CATAB v2.0e-lin.ifort 2019-Jul-13 02:49:24 2019-Jul-13 02:49
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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