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150219 (1998 SW121)
Classification: Main-belt Asteroid          SPK-ID: 2150219
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817188006078242 4.5256e-08  
a 2.325329954838098 8.0136e-09 au
q 1.902773784427473 1.0705e-07 au
i 2.692609242643583 5.161e-06 deg
node 326.1185769433539 7.1145e-05 deg
peri 26.60265035832835 7.2084e-05 deg
M 111.7361333399053 1.1356e-05 deg
tp 2458798.508894607327
(2019-Nov-11.00889461)
4.0004e-05 TDB
period 1295.165615773804
3.55
6.6951e-06
1.833e-08
d
yr
n .2779567304872558 1.4368e-09 deg/d
Q 2.747886125248723 9.4698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      555  
   data-arc span      8196 days (22.44 yr)  
   first obs. used      1998-09-26  
   last obs. used      2021-03-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52096  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:17:36  

Additional Information
 Earth MOID = .896024 au 
 Jupiter MOID = 2.68525 au 
 T_jup = 3.551 
[ 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 16.5   n/a MPO436757  

150219 (1998 SW121)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

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