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JPL Small-Body Database Browser
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46721 (1997 QW3)
Classification: Main-belt Asteroid          SPK-ID: 2046721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2682429897371608 5.1019e-08  
a 3.076639014156348 2.1528e-08 au
q 2.251352166657059 1.6435e-07 au
i 1.260155765859462 5.5954e-06 deg
node 109.3812388266849 0.00025365 deg
peri 266.2119489631795 0.00025383 deg
M 1.011147117410089 1.0976e-05 deg
tp 2458594.963630230239
(2019-Apr-21.46363023)
6.0064e-05 TDB
period 1971.120802103519
5.40
2.0689e-05
5.664e-08
d
yr
n .1826372080370819 1.917e-09 deg/d
Q 3.901925861655638 2.7303e-08 au
  Orbit Determination Parameters
   # obs. used (total)      683  
   data-arc span      8928 days (24.44 yr)  
   first obs. used      1994-03-06  
   last obs. used      2018-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59425  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 23:57:48  

Additional Information
 Earth MOID = 1.25231 au 
 Jupiter MOID = 1.5575 au 
 T_jup = 3.172 
[ 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 14.8   n/a MPO279979  
diameter diameter 6.281 km 2.885 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.28 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]
geometric albedo albedo 0.049   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46721 (1997 QW3)          Discovered 1997-Aug-30 by ODAS at Caussols
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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