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JPL Small-Body Database Browser
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249455 (2009 HQ41)
Classification: Main-belt Asteroid          SPK-ID: 2249455
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1022529154566618 7.0466e-08  
a 3.104301945968498 5.4453e-08 au
q 2.786878021535431 2.2895e-07 au
i 6.329124789094108 6.7211e-06 deg
node 170.0352049009787 6.8207e-05 deg
peri 156.5981820977282 7.7183e-05 deg
M 195.8875727592867 3.7916e-05 deg
tp 2459511.216763338809
(2021-Oct-23.71676334)
0.00021861 TDB
period 1997.76482692004
5.47
5.2565e-05
1.439e-07
d
yr
n .1802013906486746 4.7414e-09 deg/d
Q 3.421725870401566 6.0021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      182  
   data-arc span      4931 days (13.50 yr)  
   first obs. used      2005-08-27  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60269  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:11:11  

Additional Information
 Earth MOID = 1.77603 au 
 Jupiter MOID = 1.92163 au 
 T_jup = 3.204 
[ 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 16.0   n/a MPO433634  
diameter diameter 4.048 km 0.713 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249455 (2009 HQ41)          Discovered 2009-Apr-20 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 HQ41 = 2005 QY109 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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