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413553 (2005 SR221)
Classification: Main-belt Asteroid          SPK-ID: 2413553
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216899642530729 6.1579e-08  
a 2.721205975546381 2.5062e-08 au
q 2.390062517656894 1.7384e-07 au
i 13.2786489372809 6.1186e-06 deg
node 289.236726132436 2.3006e-05 deg
peri 64.51550137595694 3.159e-05 deg
M 168.6821043195374 2.1724e-05 deg
tp 2458432.242054939089
(2018-Nov-09.74205494)
9.6159e-05 TDB
period 1639.609971298504
4.49
2.2651e-05
6.202e-08
d
yr
n .2195644124528559 3.0333e-09 deg/d
Q 3.052349433435869 2.8112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      257  
   data-arc span      5609 days (15.36 yr)  
   first obs. used      2005-09-30  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54971  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 13:01:50  

Additional Information
 Earth MOID = 1.41472 au 
 Jupiter MOID = 2.38491 au 
 T_jup = 3.309 
[ 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 16.03   n/a MPCxxxxx  

413553 (2005 SR221)          Discovered 2005-Sep-30 by CSS at Catalina
Reference: Last Updated: 2014-11-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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