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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1264797947565042 4.0849e-08  
a 2.302495840177457 7.299e-09 au
q 2.011276638884107 9.5829e-08 au
i 7.283412531866325 4.1427e-06 deg
node 121.6091266685955 2.9212e-05 deg
peri 244.506148203172 3.3802e-05 deg
M 55.94407062023168 1.5078e-05 deg
tp 2458802.188330387799
(2019-Nov-14.68833039)
5.3558e-05 TDB
period 1276.135259177476
3.49
6.0681e-06
1.661e-08
d
yr
n .2821017579531776 1.3414e-09 deg/d
Q 2.593715041470806 8.2222e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1142  
   data-arc span      7791 days (21.33 yr)  
   first obs. used      1998-07-31  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54351  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:06:00  

Additional Information
 Earth MOID = 1.02113 au 
 Jupiter MOID = 2.86599 au 
 T_jup = 3.569 
[ 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 15.2   n/a MPO452887  
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

[ show close-approach data ]
Alternate Designations
 1998 QK31 = 2000 EF11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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