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78846 (2003 QN56)
Classification: Main-belt Asteroid          SPK-ID: 2078846
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .141022966621656 3.2984e-08  
a 2.246345833770487 8.9868e-09 au
q 1.929559480233976 7.2725e-08 au
i 6.692051652203004 3.8106e-06 deg
node 139.2186045927929 3.7677e-05 deg
peri 180.9183623518226 4.088e-05 deg
M 9.879231433773716 1.6149e-05 deg
tp 2458966.753090006836
(2020-Apr-27.25309001)
5.5132e-05 TDB
period 1229.740155292464
3.37
7.3796e-06
2.02e-08
d
yr
n .2927447708775376 1.7568e-09 deg/d
Q 2.563132187306999 1.0254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      7831 days (21.44 yr)  
   first obs. used      1999-05-18  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:19  

Additional Information
 Earth MOID = .916618 au 
 Jupiter MOID = 2.72199 au 
 T_jup = 3.608 
[ 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 16.5   n/a MPO436332  
rotation period rot_per 5.45 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

78846 (2003 QN56)          Discovered 2003-Aug-23 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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