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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2686769291471367 4.3935e-08  
a 3.077399866609225 1.7251e-08 au
q 2.250573520690851 1.3878e-07 au
i 1.260205687108447 5.2119e-06 deg
node 109.3802929874255 0.00022936 deg
peri 266.2082304186176 0.00022954 deg
M 110.5288945705391 1.0213e-05 deg
tp 2458595.092706673079
(2019-Apr-21.59270667)
5.3137e-05 TDB
period 1971.852034208114
5.40
1.658e-05
4.539e-08
d
yr
n .1825694797351132 1.5351e-09 deg/d
Q 3.9042262125276 2.1885e-08 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      9877 days (27.04 yr)  
   first obs. used      1994-03-06  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .563  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:40:06  

Additional Information
 Earth MOID = 1.25092 au 
 Jupiter MOID = 1.55953 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 14.79   n/a MPCxxxxx  
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. 2020-October); 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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