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JPL Small-Body Database Browser
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17948 (1999 JQ15)
Classification: Main-belt Asteroid          SPK-ID: 2017948
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078541663253279 4.4632e-08  
a 2.402199850584083 7.5929e-09 au
q 1.902892603294101 1.0564e-07 au
i 5.036565660727503 4.7218e-06 deg
node 157.3463090126431 3.944e-05 deg
peri 154.6713601167576 4.0304e-05 deg
M 185.8712833526304 9.1917e-06 deg
tp 2459658.279037119060
(2022-Mar-19.77903712)		 3.5972e-05 TDB
period 1359.91614664231
3.72		 6.4477e-06
1.765e-08		 d
yr
n .2647222042982982 1.2551e-09 deg/d
Q 2.901507097874065 9.1711e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2013  
   data-arc span      25499 days (69.81 yr)  
   first obs. used      1950-04-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:15:35  

Additional Information
 Earth MOID = .89033 au 
 Jupiter MOID = 2.39004 au 
 T_jup = 3.490 
[ 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 14.0   n/a MPO502305  
diameter diameter 3.149 km 0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.590   0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17948 (1999 JQ15)          Discovered 1999-May-12 by Okuni, T. at Nanyo
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JQ15 = 1977 RQ1 = 1991 EJ3 = 1992 SF20 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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