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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 140 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5717949098642675 1.1076e-08  
a 2.422990272880132 2.0942e-08 au
q 1.03753676819664 2.3753e-08 au
i 12.85881751990781 3.282e-06 deg
node 250.1484853735911 2.1484e-06 deg
peri 345.6442660847342 8.0942e-06 deg
M 305.2409822554126 3.9387e-06 deg
tp 2457810.045858288285
(2017-Feb-25.54585829)
1.7577e-05 JED
period 1377.608877785962
3.77
1.786e-05
4.89e-08
d
yr
n .2613223577497393 3.3879e-09 deg/d
Q 3.808443777563625 3.2917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1784  
   data-arc span      6346 days (17.37 yr)  
   first obs. used      1998-08-19  
   last obs. used      2016-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .34526  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 12:16:41  

Additional Information
 Earth MOID = .0334491 au 
 Jupiter MOID = 1.24382 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 4.749 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm]
[Hill, K. (2014) Minor Planet Bul. 41, 2-3.]

285263 (1998 QE2)          Discovered 1998-Aug-19 by LINEAR at Socorro
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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