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15253 (1990 QA4)
Classification: Main-belt Asteroid          SPK-ID: 2015253
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .044435352986963 5.7602e-08  
a 2.324060524166854 1.6512e-08 AU
q 2.220790074412434 1.3596e-07 AU
i 4.866742969417892 5.9776e-06 deg
node 338.0113817563988 7.1877e-05 deg
peri 254.1378860892523 0.0001015 deg
M 48.38450578539386 7.0198e-05 deg
tp 2456826.570444761502
(2014-Jun-18.07044476)
0.00025271 JED
period 1294.105186556668
3.54
1.3791e-05
3.776e-08
d
yr
n .2781844967006751 2.9646e-09 deg/d
Q 2.427330973921275 1.7245e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      820  
   data-arc span      9083 days (24.87 yr)  
   first obs. used      1990-08-16  
   last obs. used      2015-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51222  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:16:03  

Additional Information
 Earth MOID = 1.21755 AU 
 T_jup = 3.569 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO256975  

15253 (1990 QA4)          Discovered 1990-Aug-23 by Holt, H. E. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 QA4 = 1991 YM2 = 1998 XQ46 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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