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15819 Alisterling (1994 SN9)
Classification: Main-belt Asteroid          SPK-ID: 2015819
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1135087831969894 3.0259e-08  
a 2.185335955337652 6.383e-09 au
q 1.937281130170645 6.788e-08 au
i 6.834091955060555 3.9797e-06 deg
node 181.9017706811365 3.1074e-05 deg
peri 119.4865239403369 3.8032e-05 deg
M 35.10272798581409 2.3123e-05 deg
tp 2458885.442717679562
(2020-Feb-05.94271768)
7.5611e-05 TDB
period 1179.982981724297
3.23
5.1698e-06
1.415e-08
d
yr
n .3050891458399981 1.3367e-09 deg/d
Q 2.433390780504659 7.1075e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2140  
   data-arc span      14193 days (38.86 yr)  
   first obs. used      1981-09-25  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:02:12  

Additional Information
 Earth MOID = .933126 au 
 Jupiter MOID = 2.7564 au 
 T_jup = 3.660 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO473979  
diameter diameter 3.067 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.392   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15819 Alisterling           Discovered 1994 Sept. 28 by Spacewatch at Kitt Peak.
Alister Ling (b. 1962) is a meteorologist with Environment Canada. An amateur astronomer who is a skilled observer and writer, he contributes a regular feature to Astronomy magazine and won the Simon Newcomb Award in 2003. The name was suggested by R. Jedicke and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Alternate Designations
 1994 SN9 = 1981 SE4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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