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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2079599071260946 2.1284e-08  
a 2.401874563898023 7.1514e-09 au
q 1.902380952661261 5.033e-08 au
i 5.03715264626752 4.8648e-07 deg
node 157.3455160757325 1.2642e-05 deg
peri 154.7099049410094 1.3755e-05 deg
M 238.7726374616757 4.5553e-06 deg
tp 2459658.348786178622
(2022-Mar-19.84878618)
1.85e-05 TDB
period 1359.639932545731
3.72
6.0723e-06
1.663e-08
d
yr
n .264775983245764 1.1825e-09 deg/d
Q 2.901368175134785 8.6386e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2235  
   data-arc span      25887 days (70.87 yr)  
   first obs. used      1950-04-12  
   last obs. used      2021-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50473  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 01:46:01  

Additional Information
 Earth MOID = .887837 au 
 Jupiter MOID = 2.39006 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 13.98   n/a E2021B10  
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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