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52780 (1998 QK31)
Classification: Main-belt Asteroid          SPK-ID: 2052780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267043913583913 3.5598e-08  
a 2.302577902005904 6.3702e-09 au
q 2.010831170376964 8.2224e-08 au
i 7.283406109308446 3.9878e-06 deg
node 121.6082243294055 2.6071e-05 deg
peri 244.5592320650396 2.9625e-05 deg
M 167.5702506651342 1.3666e-05 deg
tp 2458802.461840287166
(2019-Nov-14.96184029)
4.8216e-05 TDB
period 1276.203482705157
3.49
5.296e-06
1.45e-08
d
yr
n .2820866773039291 1.1706e-09 deg/d
Q 2.594324633634844 7.1773e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1378  
   data-arc span      8340 days (22.83 yr)  
   first obs. used      1998-07-31  
   last obs. used      2021-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52254  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:09:35  

Additional Information
 Earth MOID = 1.0199 au 
 Jupiter MOID = 2.86607 au 
 T_jup = 3.569 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.22   n/a MPCxxxxx  
diameter diameter 2.282 km 0.568 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.339   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52780 (1998 QK31)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QK31 = 2000 EF11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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