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JPL Small-Body Database Browser
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173738 (2001 QJ278)
Classification: Main-belt Asteroid          SPK-ID: 2173738
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2899685750327931 5.1097e-08  
a 2.666158709748336 2.0845e-08 au
q 1.893056467871341 1.3919e-07 au
i 16.18162352088461 5.3396e-06 deg
node 116.9972945702902 1.8298e-05 deg
peri 158.0172379111013 1.9476e-05 deg
M 64.47302725347812 7.5843e-06 deg
tp 2458315.724261987095
(2018-Jul-16.22426199)
3.3032e-05 TDB
period 1590.110935563604
4.35
1.8648e-05
5.106e-08
d
yr
n .2263992982806576 2.6551e-09 deg/d
Q 3.439260951625332 2.6889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      9065 days (24.82 yr)  
   first obs. used      1995-01-30  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4836  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 14:34:45  

Additional Information
 Earth MOID = .884774 au 
 Jupiter MOID = 1.77458 au 
 T_jup = 3.267 
[ 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 15.1   n/a MPO449899  
diameter diameter 3.529 km 0.704 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.129   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

173738 (2001 QJ278)          Discovered 2001-Aug-19 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2001 QJ278 = 2000 EH168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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