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78856 (2003 QR68)
Classification: Main-belt Asteroid          SPK-ID: 2078856
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944406708837165 4.7088e-08  
a 2.232119114361537 9.387e-09 au
q 1.798104376272713 1.0329e-07 au
i 5.535010882426853 5.0415e-06 deg
node 241.3921019065078 4.8011e-05 deg
peri 138.3390716888478 4.9797e-05 deg
M 345.202968306261 1.6813e-05 deg
tp 2459050.566424793507
(2020-Jul-20.06642479)
5.711e-05 TDB
period 1218.076253312941
3.33
7.6838e-06
2.104e-08
d
yr
n .2955479995779139 1.8644e-09 deg/d
Q 2.666133852450362 1.1212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      7811 days (21.39 yr)  
   first obs. used      1999-06-11  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:15  

Additional Information
 Earth MOID = .805501 au 
 Jupiter MOID = 2.80695 au 
 T_jup = 3.610 
[ 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 16.3   n/a MPO267948  
rotation period rot_per 2.086 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

78856 (2003 QR68)          Discovered 2003-Aug-25 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2003 QR68 = 1999 LJ36 = 2000 YB72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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