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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .180464575284198 3.5881e-08  
a 3.155449719528202 1.8431e-08 au
q 2.586002826062903 1.1163e-07 au
i 1.997295082037771 4.7555e-06 deg
node 38.77990688871947 0.0001223 deg
peri 47.37404560083456 0.00012322 deg
M 88.92926912852819 1.5326e-05 deg
tp 2458094.753896312877
(2017-Dec-07.25389631)
8.4899e-05 TDB
period 2047.341658281517
5.61
1.7937e-05
4.911e-08
d
yr
n .1758377740929544 1.5406e-09 deg/d
Q 3.724896612993501 2.1757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1565  
   data-arc span      12496 days (34.21 yr)  
   first obs. used      1985-02-20  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49042  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:36:27  

Additional Information
 Earth MOID = 1.60277 au 
 Jupiter MOID = 1.509 au 
 T_jup = 3.180 
[ 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 13.6   n/a MPO474011  
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. 2019-January); 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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