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JPL Small-Body Database Browser
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193921 (2001 QE287)
Classification: Main-belt Asteroid          SPK-ID: 2193921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1448006205476518 7.8834e-08  
a 2.30376544191169 1.3471e-08 au
q 1.970178776326642 1.8431e-07 au
i 3.861003113328694 5.8088e-06 deg
node 300.0388400469926 0.00011431 deg
peri 86.09269513004604 0.00011648 deg
M 345.4576941523404 2.3046e-05 deg
tp 2458652.092501956427
(2019-Jun-17.59250196)
8.1948e-05 TDB
period 1277.190900733464
3.50
1.1203e-05
3.067e-08
d
yr
n .2818685912914503 2.4724e-09 deg/d
Q 2.637352107496738 1.5422e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      5730 days (15.69 yr)  
   first obs. used      2001-07-14  
   last obs. used      2017-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48426  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:59:29  

Additional Information
 Earth MOID = .978042 au 
 Jupiter MOID = 2.81764 au 
 T_jup = 3.572 
[ 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 16.4   n/a MPO348494  
diameter diameter 3.572 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

193921 (2001 QE287)          Discovered 2001-Aug-17 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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