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JPL Small-Body Database Browser
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(1997 WQ23)
Classification: Apollo [NEO, PHA]          SPK-ID: 3007574
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4948624739413153 3.0369e-08  
a 1.737564392044786 1.4262e-08 au
q .8777089783651658 5.2367e-08 au
i 2.448149300138864 1.6645e-05 deg
node 55.83779430985507 7.2681e-05 deg
peri 296.5674361368057 7.3437e-05 deg
M 326.4966005270833 1.3107e-05 deg
tp 2459078.356730789827
(2020-Aug-16.85673079)
3.1412e-05 TDB
period 836.5844518851005
2.29
1.03e-05
2.82e-08
d
yr
n .4303211698338421 5.2981e-09 deg/d
Q 2.597419805724407 2.132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   # delay obs. used      2  
   # Doppler obs. used      1  
   data-arc span      5883 days (16.11 yr)  
   first obs. used      1997-11-29  
   last obs. used      2014-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49986  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:17:55  

Additional Information
 Earth MOID = .0103213 au 
 Jupiter MOID = 2.84566 au 
 T_jup = 3.998 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.7   n/a MPO281842  
rotation period rot_per 14.6 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:
[Warner, B.D. (2014) Minor Planet Bull. 41, 113-124.]

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