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243750 (2000 QS121)
Classification: Main-belt Asteroid          SPK-ID: 2243750
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2088443974958259 4.7226e-08  
a 2.260603910313322 9.1612e-09 au
q 1.788489448687228 1.0787e-07 au
i 5.829122489464909 4.9716e-06 deg
node 323.3401312405938 4.1248e-05 deg
peri 56.26999251904722 4.2533e-05 deg
M 275.1409474465074 9.5763e-06 deg
tp 2459293.138064969027
(2021-Mar-19.63806497)
3.3611e-05 TDB
period 1241.466882068244
3.40
7.5466e-06
2.066e-08
d
yr
n .2899795437154565 1.7627e-09 deg/d
Q 2.732718371939415 1.1074e-08 au
  Orbit Determination Parameters
   # obs. used (total)      642  
   data-arc span      6824 days (18.68 yr)  
   first obs. used      2000-07-31  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51466  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:24:30  

Additional Information
 Earth MOID = .798042 au 
 Jupiter MOID = 2.75942 au 
 T_jup = 3.584 
[ 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 16.5   n/a MPO338728  

243750 (2000 QS121)          Discovered 2000-Aug-25 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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