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226735 (2004 QP9)
Classification: Main-belt Asteroid          SPK-ID: 2226735
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3157851792733273 4.9211e-08  
a 2.788346550524661 2.0543e-08 au
q 1.907828035191067 1.4048e-07 au
i 6.856707146150579 6.9398e-06 deg
node 8.325423621581498 4.877e-05 deg
peri 28.444577962459 4.992e-05 deg
M 144.0307792385722 1.3194e-05 deg
tp 2458520.088946526174
(2019-Feb-05.58894653)
5.7497e-05 TDB
period 1700.664125720282
4.66
1.8795e-05
5.146e-08
d
yr
n .2116820097251885 2.3394e-09 deg/d
Q 3.668865065858255 2.7031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      356  
   data-arc span      6943 days (19.01 yr)  
   first obs. used      2001-02-22  
   last obs. used      2020-02-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:37:01  

Additional Information
 Earth MOID = .916778 au 
 Jupiter MOID = 1.80396 au 
 T_jup = 3.245 
[ 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 16.36   n/a E2021B55  
diameter diameter 3.187 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 29.8389 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.063   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226735 (2004 QP9)          Discovered 2004-Aug-21 by Siding Spring Survey at Siding Spring
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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