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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2685251904923349 4.4341e-08  
a 3.077450165276423 1.7739e-08 au
q 2.251077273414904 1.4042e-07 au
i 1.260177433279594 5.3902e-06 deg
node 109.3801967095895 0.0002344 deg
peri 266.2119153870242 0.0002346 deg
M 74.02931289766433 1.0116e-05 deg
tp 2458595.004360890772
(2019-Apr-21.50436089)
5.3664e-05 TDB
period 1971.900377910004
5.40
1.705e-05
4.668e-08
d
yr
n .1825650038069165 1.5785e-09 deg/d
Q 3.903823057137942 2.2503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      9463 days (25.91 yr)  
   first obs. used      1994-03-06  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57881  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:33:27  

Additional Information
 Earth MOID = 1.25283 au 
 Jupiter MOID = 1.5588 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-August); 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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