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249464 (2009 HH97)
Classification: Main-belt Asteroid          SPK-ID: 2249464
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585992072169125 1.0597e-07  
a 3.02028018238258 4.9088e-08 au
q 2.541266139883751 3.0012e-07 au
i 14.34696901747691 1.2258e-05 deg
node 186.4509535265353 2.9326e-05 deg
peri 149.1961925426448 6.0883e-05 deg
M 303.3224470319273 6.3908e-05 deg
tp 2459302.340747093256
(2021-Mar-28.84074709)
0.00034666 TDB
period 1917.208193776176
5.25
4.674e-05
1.28e-07
d
yr
n .1877730343364201 4.5777e-09 deg/d
Q 3.499294224881409 5.6873e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      6814 days (18.66 yr)  
   first obs. used      2000-09-30  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66984  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:18:46  

Additional Information
 Earth MOID = 1.54427 au 
 Jupiter MOID = 2.0003 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 15.8   n/a MPO433635  
diameter diameter 3.891 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249464 (2009 HH97)          Discovered 2009-Apr-17 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 HH97 = 2000 TJ30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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