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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265764529899952 3.5753e-08  
a 2.302755437451891 6.3917e-09 au
q 2.011280822075806 8.2642e-08 au
i 7.283457790774539 4.0063e-06 deg
node 121.6087097650076 2.6214e-05 deg
peri 244.5497517647864 2.9842e-05 deg
M 112.3046920799278 1.3726e-05 deg
tp 2458802.332734779122
(2019-Nov-14.83273478)
4.8539e-05 TDB
period 1276.351084044647
3.49
5.3141e-06
1.455e-08
d
yr
n .2820540558943946 1.1743e-09 deg/d
Q 2.594230052827977 7.2008e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1346  
   data-arc span      8269 days (22.64 yr)  
   first obs. used      1998-07-31  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52468  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:19:53  

Additional Information
 Earth MOID = 1.01956 au 
 Jupiter MOID = 2.86613 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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