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JPL Small-Body Database Browser
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285263 (1998 QE2)
Classification: Amor [NEO, PHA]          SPK-ID: 2285263
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 150 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5717177589499584 1.1998e-08  
a 2.424061001434591 2.1337e-08 au
q 1.038182278136415 2.7873e-08 au
i 12.86064341138105 4.2495e-06 deg
node 250.1327455007078 3.1099e-06 deg
peri 345.6873559448661 8.3656e-06 deg
M 206.3927685535438 7.8462e-06 deg
tp 2459188.697134916299
(2020-Dec-05.19713492)
3.7659e-05 TDB
period 1378.522134510827
3.77
1.8201e-05
4.983e-08
d
yr
n .2611492343775438 3.4481e-09 deg/d
Q 3.809939724732767 3.3536e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1841  
   data-arc span      7793 days (21.34 yr)  
   first obs. used      1998-08-19  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .28733  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-21 06:15:25  

Additional Information
 Earth MOID = .0340189 au 
 Jupiter MOID = 1.24606 au 
 T_jup = 3.238 
[ 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 17.2   n/a MPO427557  
rotation period rot_per 4.749 h n/a LCDB (Rev. 2019-January); 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 Bull. 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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