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49203 (1998 SW115)
Classification: Main-belt Asteroid          SPK-ID: 2049203
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1312489733926503 2.8401e-08  
a 2.408060443543728 8.7296e-09 au
q 2.092004982461163 6.5917e-08 au
i 1.684606917387574 3.8551e-06 deg
node 290.6649093090609 0.00012343 deg
peri 311.6127209487315 0.00012462 deg
M 50.49169854367487 1.8068e-05 deg
tp 2458809.066921983126
(2019-Nov-21.56692198)
6.8334e-05 TDB
period 1364.895816021383
3.74
7.4219e-06
2.032e-08
d
yr
n .2637563950114418 1.4342e-09 deg/d
Q 2.724115904626292 9.8753e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1308  
   data-arc span      9546 days (26.14 yr)  
   first obs. used      1994-09-11  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49519  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:33:49  

Additional Information
 Earth MOID = 1.07958 au 
 Jupiter MOID = 2.28965 au 
 T_jup = 3.509 
[ 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 15.3   n/a MPO474372  
rotation period rot_per 6.27 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

49203 (1998 SW115)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SW115 = 2000 AY238 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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