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243273 (2008 BH18)
Classification: Main-belt Asteroid          SPK-ID: 2243273
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09280340854973231 4.7846e-08  
a 3.096544658811654 2.95e-08 au
q 2.809174759747465 1.4749e-07 au
i 12.52993595062864 5.1548e-06 deg
node 148.1080996772836 2.4449e-05 deg
peri 103.8925830803234 4.4566e-05 deg
M 2.077884409812714 3.266e-05 deg
tp 2458989.012293466538
(2020-May-19.51229347)
0.00018063 TDB
period 1990.281236297918
5.45
2.8441e-05
7.787e-08
d
yr
n .180878959935144 2.5848e-09 deg/d
Q 3.383914557875843 3.2237e-08 au
  Orbit Determination Parameters
   # obs. used (total)      284  
   data-arc span      7205 days (19.73 yr)  
   first obs. used      2000-11-27  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57523  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:57:36  

Additional Information
 Earth MOID = 1.82838 au 
 Jupiter MOID = 1.80188 au 
 T_jup = 3.180 
[ 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 15.5   n/a MPO433594  
diameter diameter 4.574 km 1.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243273 (2008 BH18)          Discovered 2008-Jan-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

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