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216905 (2009 HR95)
Classification: Main-belt Asteroid          SPK-ID: 2216905
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1331294094679958 4.4915e-08  
a 3.131167626150746 2.8175e-08 au
q 2.714317129135991 1.5152e-07 au
i 2.3891794986626 4.4248e-06 deg
node 122.7747193787434 0.00017943 deg
peri 151.1164062640328 0.00018176 deg
M 358.2252580775028 2.8572e-05 deg
tp 2459210.476784957762
(2020-Dec-26.97678496)
0.00016062 TDB
period 2023.754856559988
5.54
2.7315e-05
7.478e-08
d
yr
n .1778871580384661 2.401e-09 deg/d
Q 3.548018123165501 3.1926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      6302 days (17.25 yr)  
   first obs. used      2003-03-24  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:45  

Additional Information
 Earth MOID = 1.69647 au 
 Jupiter MOID = 1.56044 au 
 T_jup = 3.198 
[ 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 16.27   n/a E2021B55  
diameter diameter 4.476 km 0.635 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216905 (2009 HR95)          Discovered 2009-Apr-18 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

[ show close-approach data ]
Alternate Designations
 2009 HR95 = 2005 US261 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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