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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04464413364122525 5.0849e-08  
a 2.323894342434532 1.308e-08 au
q 2.220146092842798 1.1502e-07 au
i 4.866723982356184 5.6092e-06 deg
node 338.0097911256163 5.6238e-05 deg
peri 254.1067830964358 8.405e-05 deg
M 159.6744795641171 6.4072e-05 deg
tp 2456826.573862848019
(2014-Jun-18.07386285)
0.00022995 JED
period 1293.966386730873
3.54
1.0925e-05
2.991e-08
d
yr
n .2782143367027625 2.3489e-09 deg/d
Q 2.427642592026267 1.3664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1008  
   data-arc span      9253 days (25.33 yr)  
   first obs. used      1990-08-16  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52122  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:30:10  

Additional Information
 Earth MOID = 1.21449 au 
 Jupiter MOID = 2.56085 au 
 T_jup = 3.570 
[ 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 14.4 mag n/a MPO347645  

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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