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JPL Small-Body Database Browser
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52784 (1998 QL38)
Classification: Main-belt Asteroid          SPK-ID: 2052784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1540111446382253 3.9995e-08  
a 2.277537348929241 7.9803e-09 au
q 1.926771214864339 9.0881e-08 au
i 5.570894548168118 4.574e-06 deg
node 331.5893115223786 4.1304e-05 deg
peri 37.39449449485014 4.3598e-05 deg
M 341.3494906081979 1.394e-05 deg
tp 2458665.540651896815
(2019-Jul-01.04065190)
4.8723e-05 TDB
period 1255.44210031847
3.44
6.5985e-06
1.807e-08
d
yr
n .2867515753284666 1.5071e-09 deg/d
Q 2.628303482994142 9.2094e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1036  
   data-arc span      10351 days (28.34 yr)  
   first obs. used      1991-08-05  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50482  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:06:00  

Additional Information
 Earth MOID = .927915 au 
 Jupiter MOID = 2.84002 au 
 T_jup = 3.586 
[ 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 15.4   n/a MPO502509  
diameter diameter 2.224 km 0.672 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.326   0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52784 (1998 QL38)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QL38 = 1991 PN9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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