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18487 (1996 AU3)
Classification: Main-belt Asteroid          SPK-ID: 2018487
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1793631522549582 5.1675e-08  
a 2.64100575222668 1.4882e-08 au
q 2.167306635383826 1.403e-07 au
i 15.11576236881454 5.6141e-06 deg
node 133.6214187368598 1.5187e-05 deg
peri 195.3687452954339 1.9191e-05 deg
M 34.00580049083506 1.1668e-05 deg
tp 2458852.417768846424
(2020-Jan-03.91776885)
5.0509e-05 TDB
period 1567.662058996522
4.29
1.3251e-05
3.628e-08
d
yr
n .2296413298606206 1.941e-09 deg/d
Q 3.114704869069535 1.7551e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1848  
   data-arc span      10872 days (29.77 yr)  
   first obs. used      1990-10-26  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44298  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:20:22  

Additional Information
 Earth MOID = 1.15857 au 
 Jupiter MOID = 2.23573 au 
 T_jup = 3.323 
[ 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 12.8   n/a MPO347668  
diameter diameter 7.113 km 0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.512 h n/a LCDB (Rev. 2019-August); 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 Bull. 30, 4-7.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.678   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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