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285263 (1998 QE2)
Classification: Amor [NEO, PHA]          SPK-ID: 2285263
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 132 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5714453268791964 1.1887e-08  
a 2.423375845923104 2.1439e-08 AU
q 1.038549043498427 2.5276e-08 AU
i 12.85414292783105 3.3481e-06 deg
node 250.1536955185017 2.1516e-06 deg
peri 345.6638262316185 9.0366e-06 deg
M 96.11161939633418 1.9975e-06 deg
tp 2456432.622706015097
(2013-May-20.12270602)
7.4878e-06 JED
period 1377.937721436585
3.77
1.8285e-05
5.006e-08
d
yr
n .2612599933940974 3.4669e-09 deg/d
Q 3.808202648347781 3.369e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1769  
   data-arc span      5531 days (15.14 yr)  
   first obs. used      1998-08-19  
   last obs. used      2013-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .3438  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 10:04:24  

Additional Information
 Earth MOID = .0345524 AU 
 T_jup = 3.239 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.3 mag n/a MPO268323  
rotation period rot_per 4.751 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hills, K. (2013) Posting on CALL web site: http://www.MinorPlanet.info/call.html]

285263 (1998 QE2)          Discovered 1998-Aug-19 by LINEAR at Socorro (704)
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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