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308444 (2005 SF198)
Classification: Main-belt Asteroid          SPK-ID: 2308444
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1291920265227533 1.0591e-07  
a 3.054040109915433 5.8046e-08 au
q 2.659482479033686 3.1915e-07 au
i 4.740588849899144 1.3391e-05 deg
node 342.0780826949484 0.0001011 deg
peri 322.9363895292945 0.00011174 deg
M 307.074306946685 5.7324e-05 deg
tp 2459287.098943180667
(2021-Mar-13.59894318)
0.00031516 TDB
period 1949.442956582647
5.34
5.5578e-05
1.522e-07
d
yr
n .1846681375232831 5.2648e-09 deg/d
Q 3.44859774079718 6.5545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      89  
   data-arc span      5873 days (16.08 yr)  
   first obs. used      2003-03-09  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70526  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:26:41  

Additional Information
 Earth MOID = 1.64648 au 
 Jupiter MOID = 1.80675 au 
 T_jup = 3.218 
[ 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 16.3   n/a MPO455272  

308444 (2005 SF198)          Discovered 2005-Sep-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2005 SF198 = 2008 DK42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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