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442319 (2011 SF121)
Classification: Main-belt Asteroid          SPK-ID: 2442319
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2634130881074095 6.3041e-08  
a 2.622962903398208 3.362e-08 au
q 1.932040145022909 1.7353e-07 au
i 8.702360805686897 1.582e-05 deg
node 9.976919469232321 7.5925e-05 deg
peri 43.59386446380827 8.7941e-05 deg
M 350.1819056751257 4.5681e-05 deg
tp 2459042.816656764329
(2020-Jul-12.31665676)
0.00019744 TDB
period 1551.624575103411
4.25
2.9832e-05
8.168e-08
d
yr
n .2320148867041547 4.4608e-09 deg/d
Q 3.313885661773507 4.2476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      86  
   data-arc span      15292 days (41.87 yr)  
   first obs. used      1977-10-11  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64994  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:00  

Additional Information
 Earth MOID = .952922 au 
 Jupiter MOID = 2.1389 au 
 T_jup = 3.338 
[ 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 17.5   n/a MPO495191  

442319 (2011 SF121)          Discovered 1977-Oct-11 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 SF121 = 2302 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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