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442349 (2011 SH221)
Classification: Main-belt Asteroid          SPK-ID: 2442349
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2413970863436168 1.6415e-07  
a 2.592100971419005 5.6526e-08 au
q 1.966375349409999 4.6434e-07 au
i 4.727999313921667 9.2482e-06 deg
node 144.5218041764624 6.6593e-05 deg
peri 220.6219153810286 8.1069e-05 deg
M 30.2072853980624 5.0001e-05 deg
tp 2458872.595596356514
(2020-Jan-24.09559636)
0.00020776 TDB
period 1524.320530788523
4.17
4.9861e-05
1.365e-07
d
yr
n .2361708005164596 7.7253e-09 deg/d
Q 3.217826593428012 7.0171e-08 au
  Orbit Determination Parameters
   # obs. used (total)      100  
   data-arc span      4368 days (11.96 yr)  
   first obs. used      2007-10-12  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62009  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:00:41  

Additional Information
 Earth MOID = .967162 au 
 Jupiter MOID = 2.24443 au 
 T_jup = 3.373 
[ 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 MPO495191  

442349 (2011 SH221)          Discovered 2007-Oct-12 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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