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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2076803680739662 4.5249e-08  
a 2.402196011185846 7.6575e-09 au
q 1.903307059396957 1.0731e-07 au
i 5.035892927761062 5.0184e-06 deg
node 157.3584988723408 4.0511e-05 deg
peri 154.6144563458286 4.1527e-05 deg
M 80.0578931542272 9.3893e-06 deg
tp 2458298.078442905435
(2018-Jun-28.57844291)		 3.5124e-05 TDB
period 1359.912886344732
3.72		 6.5025e-06
1.78e-08		 d
yr
n .2647228389515691 1.2658e-09 deg/d
Q 2.901084962974737 9.2478e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1857  
   data-arc span      25440 days (69.65 yr)  
   first obs. used      1950-04-12  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52061  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:24:08  

Additional Information
 Earth MOID = .889907 au 
 Jupiter MOID = 2.38783 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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