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JPL Small-Body Database Browser
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393687 (2004 SW20)
Classification: Inner Main-belt Asteroid          SPK-ID: 2393687
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08036702750887495 1.0409e-07  
a 1.907322551124814 1.4656e-08 au
q 1.754036707190268 1.994e-07 au
i 21.7442150163771 1.4552e-05 deg
node 194.9586682282649 1.7478e-05 deg
peri 161.6547421792748 6.2832e-05 deg
M 348.7354576219207 6.2401e-05 deg
tp 2459030.605489624700
(2020-Jun-30.10548962)
0.00016692 TDB
period 962.1319625005433
2.63
1.109e-05
3.036e-08
d
yr
n .3741690475227266 4.3128e-09 deg/d
Q 2.06060839505936 1.5834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      86  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      1998-04-24  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57949  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:06:13  

Additional Information
 Earth MOID = .758505 au 
 Jupiter MOID = 3.19116 au 
 T_jup = 3.849 
[ 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 18.4   n/a MPO419003  

393687 (2004 SW20)          Discovered 2004-Sep-18 by LINEAR at Socorro
Reference: Last Updated: 2014-05-15

Alternate Designations
 2004 SW20 = 1998 HT28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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