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JPL Small-Body Database Browser
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390654 (2002 QW87)
Classification: Main-belt Asteroid          SPK-ID: 2390654
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2180045083313341 1.958e-07  
a 2.326934843324138 5.211e-08 au
q 1.819652556886209 4.7898e-07 au
i .565681068577162 2.2157e-05 deg
node 124.4790340670241 0.0016828 deg
peri 142.8437682985898 0.0016846 deg
M 295.683687605322 0.00011364 deg
tp 2458832.129247461537
(2019-Dec-14.62924746)
0.00041566 TDB
period 1296.506686739916
3.55
4.3552e-05
1.192e-07
d
yr
n .2776692196669074 9.3273e-09 deg/d
Q 2.834217129762067 6.347e-08 au
  Orbit Determination Parameters
   # obs. used (total)      35  
   data-arc span      7058 days (19.32 yr)  
   first obs. used      1995-09-17  
   last obs. used      2015-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .77261  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 21:37:38  

Additional Information
 Earth MOID = .803287 au 
 Jupiter MOID = 2.25939 au 
 T_jup = 3.541 
[ 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 18.4   n/a MPO288622  

390654 (2002 QW87)          Discovered 2002-Aug-27 by NEAT at Palomar
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2002 QW87 = 1995 SH56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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