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JPL Small-Body Database Browser
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442285 (2011 SD1)
Classification: Main-belt Asteroid          SPK-ID: 2442285
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1555063606434955 5.9403e-08  
a 2.619129919343059 3.5811e-08 au
q 2.211838557533528 1.4706e-07 au
i 12.99564022445242 8.7243e-06 deg
node 346.4146664683336 2.8018e-05 deg
peri 81.09705232934293 5.1335e-05 deg
M 228.0719470793385 3.9336e-05 deg
tp 2459167.872969550001
(2020-Nov-14.37296955)
0.0001719 TDB
period 1548.224691535729
4.24
3.1753e-05
8.693e-08
d
yr
n .2325243887196409 4.769e-09 deg/d
Q 3.026421281152589 4.138e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      4279 days (11.72 yr)  
   first obs. used      2007-10-14  
   last obs. used      2019-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58373  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:57  

Additional Information
 Earth MOID = 1.26805 au 
 Jupiter MOID = 2.36615 au 
 T_jup = 3.352 
[ 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 17.4   n/a MPO402745  

442285 (2011 SD1)          Discovered 2009-Feb-19 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 SD1 = 2009 DC121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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