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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .20803484080625 1.7083e-08  
a 2.401460671225983 6.4783e-09 au
q 1.901873182785015 4.1743e-08 au
i 5.037447979674923 4.7973e-07 deg
node 157.3476505402642 1.2526e-05 deg
peri 154.7547305349862 1.3561e-05 deg
M 290.6300424809076 4.6951e-06 deg
tp 2459658.427183211422
(2022-Mar-19.92718321)
1.8497e-05 TDB
period 1359.288506557898
3.72
5.5003e-06
1.506e-08
d
yr
n .2648444375591916 1.0717e-09 deg/d
Q 2.901048159666951 7.826e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2551  
   data-arc span      26009 days (71.21 yr)  
   first obs. used      1950-04-12  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48804  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:31:41  

Additional Information
 Earth MOID = .888702 au 
 Jupiter MOID = 2.38984 au 
 T_jup = 3.491 
[ 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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