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JPL Small-Body Database Browser
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46978 (1998 SD145)
Classification: Main-belt Asteroid          SPK-ID: 2046978
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279578757095155 5.7011e-08  
a 2.660282271848861 1.707e-08 au
q 2.319878203555397 1.555e-07 au
i 4.237985005881391 5.5888e-06 deg
node 50.43338763729449 7.2371e-05 deg
peri 289.5425417120977 7.4646e-05 deg
M 30.11317824640647 1.9916e-05 deg
tp 2458867.930352527486
(2020-Jan-19.43035253)
8.717e-05 TDB
period 1584.856726167729
4.34
1.5254e-05
4.176e-08
d
yr
n .2271498704305593 2.1863e-09 deg/d
Q 3.000686340142324 1.9254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      753  
   data-arc span      7535 days (20.63 yr)  
   first obs. used      1998-09-18  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53989  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:34:43  

Additional Information
 Earth MOID = 1.31562 au 
 Jupiter MOID = 2.37869 au 
 T_jup = 3.370 
[ 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 14.8   n/a MPO302329  

46978 (1998 SD145)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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