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JPL Small-Body Database Browser
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212958 (2009 BW61)
Classification: Main-belt Asteroid          SPK-ID: 2212958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138246585587335 6.0216e-08  
a 3.078011259709879 3.9392e-08 au
q 2.652486712655617 1.8787e-07 au
i 1.617861122388166 9.0568e-06 deg
node 156.387843831407 0.00024396 deg
peri 146.0704184018172 0.00024632 deg
M 236.749067631817 3.588e-05 deg
tp 2459675.791752652195
(2022-Apr-06.29175265)
0.00020206 TDB
period 1972.439690992125
5.40
3.7865e-05
1.037e-07
d
yr
n .1825150860855584 3.5037e-09 deg/d
Q 3.503535806764142 4.4838e-08 au
  Orbit Determination Parameters
   # obs. used (total)      187  
   data-arc span      8888 days (24.33 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63928  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:52:44  

Additional Information
 Earth MOID = 1.63731 au 
 Jupiter MOID = 1.72054 au 
 T_jup = 3.213 
[ 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 16.1   n/a MPO422828  
diameter diameter 2.976 km 1.345 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212958 (2009 BW61)          Discovered 2009-Jan-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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