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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2632369689589608 6.3275e-08  
a 2.62414372435976 3.3959e-08 au
q 1.933372084246618 1.7412e-07 au
i 8.701055743611832 1.5814e-05 deg
node 10.00103213585157 7.593e-05 deg
peri 43.45580173263551 8.7962e-05 deg
M 257.4915408489096 4.4499e-05 deg
tp 2459042.616840843467
(2020-Jul-12.11684084)
0.00019757 TDB
period 1552.672472318155
4.25
3.014e-05
8.252e-08
d
yr
n .2318583000718217 4.5008e-09 deg/d
Q 3.314915364472902 4.2899e-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 = .953706 au 
 Jupiter MOID = 2.13666 au 
 T_jup = 3.337 
[ 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 17.7   n/a MPO402745  

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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