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442292 (2011 SB21)
Classification: Main-belt Asteroid          SPK-ID: 2442292
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2489305838190856 2.684e-07  
a 2.561052369362212 4.7695e-08 au
q 1.923528107865625 7.1458e-07 au
i 11.59909047966297 8.3324e-06 deg
node 289.4847892653277 5.7513e-05 deg
peri 2.375269551043522 7.8244e-05 deg
M 95.94698496454824 4.8645e-05 deg
tp 2458601.516489778985
(2019-Apr-28.01648978)
0.0002117 TDB
period 1497.014874752315
4.10
4.1819e-05
1.145e-07
d
yr
n .2404785724387428 6.7177e-09 deg/d
Q 3.1985766308588 5.9568e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      5460 days (14.95 yr)  
   first obs. used      2004-12-18  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58625  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 22:52:52  

Additional Information
 Earth MOID = .907365 au 
 Jupiter MOID = 2.00942 au 
 T_jup = 3.363 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO437720  

442292 (2011 SB21)          Discovered 2004-Dec-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2011 SB21 = 2008 YN114 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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