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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1133052585001739 2.2479e-08  
a 2.185657155920219 5.1826e-09 au
q 1.938010706875924 4.8556e-08 au
i 6.833899820613146 3.7955e-06 deg
node 181.8958392235524 2.7239e-05 deg
peri 119.5782388026015 3.4381e-05 deg
M 155.8371399965112 2.1535e-05 deg
tp 2458885.595234005280
(2020-Feb-06.09523401)
7.0226e-05 TDB
period 1180.243142053408
3.23
4.1979e-06
1.149e-08
d
yr
n .3050218952119185 1.0849e-09 deg/d
Q 2.433303604964514 5.7698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2735  
   data-arc span      14442 days (39.54 yr)  
   first obs. used      1981-09-25  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44989  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:31:06  

Additional Information
 Earth MOID = .93332 au 
 Jupiter MOID = 2.75444 au 
 T_jup = 3.659 
[ 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 14.28   n/a E2021B10  
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

Alternate Designations
 1994 SN9 = 1981 SE4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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