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308411 (2005 SM98)
Classification: Main-belt Asteroid          SPK-ID: 2308411
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 .1657039095977721 1.0441e-07  
a 3.181994348447363 4.1716e-08 au
q 2.65472544459162 3.4669e-07 au
i 7.56964220365783 1.1557e-05 deg
node 339.6977593726235 6.378e-05 deg
peri 29.98044026020192 7.1034e-05 deg
M 216.2543745885515 3.0025e-05 deg
tp 2459828.327155836474
(2022-Sep-05.82715584)
0.00018189 TDB
period 2073.230230472079
5.68
4.077e-05
1.116e-07
d
yr
n .173642075399425 3.4147e-09 deg/d
Q 3.709263252303107 4.8628e-08 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      7548 days (20.67 yr)  
   first obs. used      1999-08-21  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:12:17  

Additional Information
 Earth MOID = 1.65699 au 
 Jupiter MOID = 1.78185 au 
 T_jup = 3.164 
[ 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 MPO291878  

308411 (2005 SM98)          Discovered 2005-Sep-25 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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