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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180490106966433 6.647e-08  
a 2.640899951334123 2.1555e-08 au
q 2.164243636630179 1.7787e-07 au
i 15.11153903448643 7.3403e-06 deg
node 133.6914912555474 2.0434e-05 deg
peri 195.63514136824 2.6295e-05 deg
M 72.2056991084128 1.4797e-05 deg
tp 2457286.090741592895
(2015-Sep-20.59074159)
6.483e-05 JED
period 1567.567857166142
4.29
1.9192e-05
5.254e-08
d
yr
n .2296551299864045 2.8117e-09 deg/d
Q 3.117556266038067 2.5446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1121  
   data-arc span      9209 days (25.21 yr)  
   first obs. used      1990-10-26  
   last obs. used      2016-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47282  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:20:12  

Additional Information
 Earth MOID = 1.15505 au 
 Jupiter MOID = 2.22335 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 12.8 mag n/a MPO347668  
rotation period rot_per 6.512 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 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.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys. 586, A108.]

18487 (1996 AU3)          Discovered 1996-Jan-13 by Ueda, S., Kaneda, H. at Kushiro
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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