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18487 (1996 AU3)
Classification: Main-belt Asteroid          SPK-ID: 2018487
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804509100558853 6.7723e-08  
a 2.640849884996848 3.0797e-08 AU
q 2.164306119928187 1.7985e-07 AU
i 15.11199344797322 7.5713e-06 deg
node 133.695755975148 2.6782e-05 deg
peri 195.7460103314462 3.5124e-05 deg
M 294.3339894614772 2.9095e-05 deg
tp 2457286.425000678628
(2015-Sep-20.92500068)
0.00012946 JED
period 1567.523280311368
4.29
2.742e-05
7.507e-08
d
yr
n .2296616608644503 4.0174e-09 deg/d
Q 3.117393650065509 3.6354e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      8650 days (23.68 yr)  
   first obs. used      1990-10-26  
   last obs. used      2014-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48559  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:31:09  

Additional Information
 Earth MOID = 1.15653 AU 
 T_jup = 3.323 
[ 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 12.7 mag n/a MPO263512  
rotation period rot_per 6.512 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Clark, M.; Joyce, B. (2003) Minor Planet Bul. 30, 4-7.]

18487 (1996 AU3)          Discovered 1996-Jan-13 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 AU3 = 1999 XN215 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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