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15409 (1997 WQ31)
Classification: Main-belt Asteroid          SPK-ID: 2015409
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1224493526919641 5.3755e-08  
a 2.943329414129433 1.3438e-08 au
q 2.582920632610066 1.5926e-07 au
i 3.135172435428769 3.6706e-06 deg
node 79.78859944777808 8.4089e-05 deg
peri 293.2461731873483 8.492e-05 deg
M 196.2981718684149 1.3462e-05 deg
tp 2459839.202159720836
(2022-Sep-16.70215972)
7.0846e-05 TDB
period 1844.406876487686
5.05
1.2631e-05
3.458e-08
d
yr
n .1951846984465542 1.3367e-09 deg/d
Q 3.3037381956488 1.5084e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1766  
   data-arc span      10067 days (27.56 yr)  
   first obs. used      1992-11-18  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:49:47  

Additional Information
 Earth MOID = 1.58545 au 
 Jupiter MOID = 2.16236 au 
 T_jup = 3.259 
[ 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 13.8   n/a MPO473974  
diameter diameter 6.705 km 0.404 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.723 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.143   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15409 (1997 WQ31)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1997 WQ31 = 1999 CH33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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