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JPL Small-Body Database Browser
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100993 (1998 QG39)
Classification: Main-belt Asteroid          SPK-ID: 2100993
[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3077329252702872 4.7919e-08  
a 2.699255880693263 1.2619e-08 au
q 1.8686059724745 1.2662e-07 au
i 8.90451618395522 5.044e-06 deg
node 344.2600005345001 2.9564e-05 deg
peri 11.22016082340408 3.0674e-05 deg
M 318.3878631734159 1.2458e-05 deg
tp 2459187.732841471863
(2020-Dec-04.23284147)		 5.7132e-05 TDB
period 1619.811623968548
4.43		 1.1359e-05
3.11e-08		 d
yr
n .222248065560857 1.5585e-09 deg/d
Q 3.529905788912026 1.6502e-08 au
   Orbit Determination Parameters
   # obs. used (total)      744  
   data-arc span      8483 days (23.23 yr)  
   first obs. used      1996-03-12  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54265  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:14:29  

Additional Information
 Earth MOID = .864693 au 
 Jupiter MOID = 1.92435 au 
 T_jup = 3.282 
[ 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 14.9   n/a MPO474884  
diameter diameter 4.783 km 1.592 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100993 (1998 QG39)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 QG39 = 1996 EC9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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