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249454 (2009 HH41)
Classification: Main-belt Asteroid          SPK-ID: 2249454
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 .07208538134324897 6.0143e-08  
a 3.153770368133131 3.436e-08 au
q 2.926429628477216 2.1022e-07 au
i 16.35312836593954 6.4938e-06 deg
node 198.0992627110434 1.7055e-05 deg
peri 73.6056797077285 4.775e-05 deg
M 300.3860350859725 4.5679e-05 deg
tp 2459339.257591359436
(2021-May-04.75759136)
0.00026198 TDB
period 2045.707462425483
5.60
3.3432e-05
9.153e-08
d
yr
n .175978240590259 2.8759e-09 deg/d
Q 3.381111107789047 3.6837e-08 au
  Orbit Determination Parameters
   # obs. used (total)      322  
   data-arc span      10244 days (28.05 yr)  
   first obs. used      1992-04-09  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:43:56  

Additional Information
 Earth MOID = 1.96329 au 
 Jupiter MOID = 1.7208 au 
 T_jup = 3.140 
[ 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 15.4   n/a MPO433634  
diameter diameter 5.123 km 0.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249454 (2009 HH41)          Discovered 2009-Apr-20 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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