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226676 (2004 HQ28)
Classification: Main-belt Asteroid          SPK-ID: 2226676
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015957701077399 5.4211e-08  
a 2.321985236166345 1.7533e-08 au
q 2.086081357919223 1.2483e-07 au
i 6.082387140355196 7.1394e-06 deg
node 79.04528060263657 5.3894e-05 deg
peri 110.0353033724267 6.4477e-05 deg
M 226.2116362575605 3.5319e-05 deg
tp 2459480.789894983160
(2021-Sep-23.28989498)
0.00012877 TDB
period 1292.372201567556
3.54
1.4638e-05
4.008e-08
d
yr
n .2785575235704896 3.155e-09 deg/d
Q 2.557889114413467 1.9314e-08 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      6167 days (16.88 yr)  
   first obs. used      2001-07-18  
   last obs. used      2018-06-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57131  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:26:03  

Additional Information
 Earth MOID = 1.09508 au 
 Jupiter MOID = 2.41201 au 
 T_jup = 3.563 
[ 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 16.9   n/a MPO440184  

226676 (2004 HQ28)          Discovered 2004-Apr-20 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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