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173740 (2001 QX287)
Classification: Main-belt Asteroid          SPK-ID: 2173740
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1196479438264998 5.2223e-08  
a 2.98372761151122 2.371e-08 au
q 2.626730737855549 1.6287e-07 au
i 10.89170996494548 5.8788e-06 deg
node 329.9884318524263 2.1946e-05 deg
peri 345.5583972323445 2.9302e-05 deg
M 253.6543444154725 2.2178e-05 deg
tp 2459556.601976824363
(2021-Dec-08.10197682)
0.00011972 TDB
period 1882.509544526215
5.15
2.2439e-05
6.143e-08
d
yr
n .1912340901785993 2.2795e-09 deg/d
Q 3.340724485166891 2.6547e-08 au
  Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2001-07-22  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:18:00  

Additional Information
 Earth MOID = 1.61503 au 
 Jupiter MOID = 1.9807 au 
 T_jup = 3.220 
[ 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 14.9   n/a MPO433116  
diameter diameter 3.828 km 0.954 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.159   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173740 (2001 QX287)          Discovered 2001-Aug-17 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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