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JPL Small-Body Database Browser
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233958 (2009 YP21)
Classification: Main-belt Asteroid          SPK-ID: 2233958
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1498595904225808 5.5332e-08  
a 2.76857930311536 3.3667e-08 au
q 2.353681142698058 1.5729e-07 au
i 3.083342155438063 8.6994e-06 deg
node 1.959962753158046 0.00011502 deg
peri 94.72454174275093 0.00012133 deg
M 18.35531015027718 3.75e-05 deg
tp 2458514.708728357269
(2019-Jan-31.20872836)
0.0001744 TDB
period 1682.611600595418
4.61
3.0692e-05
8.403e-08
d
yr
n .2139531189922906 3.9026e-09 deg/d
Q 3.183477463532662 3.8713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      6534 days (17.89 yr)  
   first obs. used      2001-02-17  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54087  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:52:47  

Additional Information
 Earth MOID = 1.37304 au 
 Jupiter MOID = 1.98716 au 
 T_jup = 3.320 
[ 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 16.4   n/a MPO273545  
diameter diameter 2.642 km 0.350 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233958 (2009 YP21)          Discovered 2009-Dec-27 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
Alternate Designations
 2009 YP21 = 2004 XF149 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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