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385279 (2001 SD221)
Classification: Main-belt Asteroid          SPK-ID: 2385279
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1050822578718965 5.1986e-08  
a 2.994003992548282 3.7293e-08 au
q 2.679387292933836 1.5494e-07 au
i 10.73957379210029 8.9705e-06 deg
node 8.985552982530514 3.0967e-05 deg
peri 307.6089876996152 6.589e-05 deg
M 295.8055343658486 6.4135e-05 deg
tp 2459537.920975680587
(2021-Nov-19.42097568)
0.00034106 TDB
period 1892.243358442856
5.18
3.5355e-05
9.68e-08
d
yr
n .190250370489474 3.5546e-09 deg/d
Q 3.308620692162728 4.1212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      8651 days (23.69 yr)  
   first obs. used      1996-10-04  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5755  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:49  

Additional Information
 Earth MOID = 1.68134 au 
 Jupiter MOID = 2.08629 au 
 T_jup = 3.220 
[ 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 15.99   n/a E2021B25  

385279 (2001 SD221)          Discovered 2001-Sep-19 by LINEAR at Socorro
Reference: Last Updated: 2014-02-19

Alternate Designations
 2001 SD221 = 2006 RQ65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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