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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 132 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5715151975466239 1.1916e-08  
a 2.423106550682613 2.1421e-08 AU
q 1.038264331692721 2.5353e-08 AU
i 12.85529982096384 3.3485e-06 deg
node 250.1503259218766 2.1515e-06 deg
peri 345.6556292214736 9.0347e-06 deg
M 148.390147443363 2.3314e-06 deg
tp 2456432.615833576950
(2013-May-20.11583358)
7.4647e-06 JED
period 1377.708044870884
3.77
1.8269e-05
5.002e-08
d
yr
n .2613035478309474 3.4651e-09 deg/d
Q 3.807948769672506 3.3664e-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 = .0358143 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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 (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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