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18486 (1996 AS2)
Classification: Main-belt Asteroid          SPK-ID: 2018486
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1783353706422474 3.5388e-08  
a 3.161259870563803 1.752e-08 au
q 2.597495419850344 1.1025e-07 au
i 1.994411924623526 4.5153e-06 deg
node 38.72619879606425 0.00011328 deg
peri 47.56429227923331 0.00011412 deg
M 194.2337311835091 1.5429e-05 deg
tp 2460145.827704487701
(2023-Jul-20.32770449)
9.3558e-05 TDB
period 2052.998936667365
5.62
1.7067e-05
4.673e-08
d
yr
n .1753532325663979 1.4577e-09 deg/d
Q 3.725024321277262 2.0645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      12961 days (35.49 yr)  
   first obs. used      1985-02-20  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49606  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:14:42  

Additional Information
 Earth MOID = 1.61398 au 
 Jupiter MOID = 1.50728 au 
 T_jup = 3.179 
[ 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 13.55   n/a E2021B10  
diameter diameter 8.975 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.62 h n/a LCDB (Rev. 2020-October); 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:
[Warner, B.D. (2013) Minor Planet Bull. 40, 137-145.]
geometric albedo albedo 0.060   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18486 (1996 AS2)          Discovered 1996-Jan-13 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 AS2 = 1985 DQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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