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13720 (1998 QU50)
Classification: Outer Main-belt Asteroid          SPK-ID: 2013720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04833270404238064 3.8209e-08  
a 3.202554649238285 2.6245e-08 au
q 3.047766523197101 1.306e-07 au
i 21.2994702167157 5.4567e-06 deg
node 348.5081817118348 1.1337e-05 deg
peri 278.0905866223902 6.2462e-05 deg
M .1627788517557158 6.2797e-05 deg
tp 2458999.553460524780
(2020-May-30.05346052)
0.00036515 TDB
period 2093.356768423587
5.73
2.5733e-05
7.045e-08
d
yr
n .1719725970414016 2.114e-09 deg/d
Q 3.357342775279469 2.7513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1239  
   data-arc span      15003 days (41.08 yr)  
   first obs. used      1979-06-15  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:44:34  

Additional Information
 Earth MOID = 2.11113 au 
 Jupiter MOID = 1.79282 au 
 T_jup = 3.085 
[ 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 13.2   n/a MPO473953  
diameter diameter 12.314 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13720 (1998 QU50)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 QU50 = 1990 EG10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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