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JPL Small-Body Database Browser
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344010 (2011 SN121)
Classification: Main-belt Asteroid          SPK-ID: 2344010
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104382354509399 6.1961e-08  
a 3.160663402025067 6.2714e-08 au
q 2.830745914310003 2.0913e-07 au
i 15.81298292270906 6.2109e-06 deg
node 191.7343549752431 2.3373e-05 deg
peri 240.8692080026902 3.5895e-05 deg
M 75.57972088703308 2.5316e-05 deg
tp 2458169.607850793799
(2018-Feb-20.10785079)
0.0001467 TDB
period 2052.417922343053
5.62
6.1086e-05
1.672e-07
d
yr
n .175402872914412 5.2205e-09 deg/d
Q 3.49058088974013 6.926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      195  
   data-arc span      6229 days (17.05 yr)  
   first obs. used      2002-02-08  
   last obs. used      2019-02-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55876  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:21:11  

Additional Information
 Earth MOID = 1.88065 au 
 Jupiter MOID = 1.94755 au 
 T_jup = 3.138 
[ 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 15.6   n/a MPO437457  
diameter diameter 3.449 km 1.364 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.031   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

344010 (2011 SN121)          Discovered 2009-Apr-20 by Spacewatch at Kitt Peak
Reference: 20121029/Numbers.arcLast Updated: 2012-11-08

[ show close-approach data ]
Alternate Designations
 2011 SN121 = 2010 HF40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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