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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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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1794864443450202 3.536e-08  
a 3.158177052431549 1.7742e-08 au
q 2.591327082678574 1.0987e-07 au
i 1.995850713089229 4.643e-06 deg
node 38.76934141916123 0.00011674 deg
peri 47.52027082468761 0.00011762 deg
M 159.1326023085971 1.5409e-05 deg
tp 2458094.329747075937
(2017-Dec-06.82974708)
8.3246e-05 TDB
period 2049.996583478474
5.61
1.7275e-05
4.73e-08
d
yr
n .1756100487685423 1.4798e-09 deg/d
Q 3.725027022184524 2.0927e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1652  
   data-arc span      12901 days (35.32 yr)  
   first obs. used      1985-02-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:22:40  

Additional Information
 Earth MOID = 1.60813 au 
 Jupiter MOID = 1.50743 au 
 T_jup = 3.179 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456119.5 (2012-Jul-11.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1823359100591349 3.5362e-08  
q 2.579238078217294 1.1025e-07 au
tp 2456046.385402033380
(2012-Apr-28.88540203)
7.4059e-05 TDB
node 38.8019743324792 0.00011657 deg
peri 47.22567435737839 0.00011742 deg
i 1.99874619361256 4.6485e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1652  
   data-arc span      12901 days (35.32 yr)  
   first obs. used      1985-02-20  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:22:40  

Additional Information
 Jupiter MOID = 1.50743 au 
 T_jup = 3.179 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.250479286692621E-15 -3.864112870899304E-15 -1.951524455738859E-13 3.572785654949613E-15 -6.016900881833115E-14 -2.887549142762767E-16
q -3.864112870899304E-15 1.215481005395239E-14 1.01115812255578E-12 -1.321302144542659E-14 2.628189319166415E-13 8.664762246868381E-16
tp -1.951524455738859E-13 1.01115812255578E-12 5.484809198443947E-9 -1.076070467688762E-11 1.063819114732889E-9 -4.504696712515949E-13
node 3.572785654949613E-15 -1.321302144542659E-14 -1.076070467688762E-11 1.358827393208765E-8 -1.358198356204312E-8 -6.458935272767856E-11
peri -6.016900881833115E-14 2.628189319166415E-13 1.063819114732889E-9 -1.358198356204312E-8 1.378788100507555E-8 6.446298581909027E-11
i -2.887549142762767E-16 8.664762246868381E-16 -4.504696712515949E-13 -6.458935272767856E-11 6.446298581909027E-11 2.160853758220817E-11

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-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:
[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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1915-Aug-02 17:28 00:03 Jupiter 1.89066302853005 1.89066142509081 1.89066463197004 3.26961175624025 3.1295934625227 2420712.227516099 2.75348559691291 113.244147688338 26.8430379732985 64.4737577079582 1592455.27785196 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
1926-Feb-17 01:44 00:02 Jupiter 1.58530253719927 1.58530161779556 1.58530345660027 1.59383608960855 1.21314439431729 2424563.572109069 2.42822283893558 179.526483278843 84.9207098460792 8.67395448296661 888635.045818695 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
1936-Sep-22 04:41 00:02 Jupiter 1.56984308604598 1.56984258420734 1.5698435878849 1.24696694453036 0.689789195241603 2428433.695195250 1.95989621416007 415.385460180461 197.861577810357 16.5219400087174 2154795.81496024 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
1947-Apr-28 09:03 00:02 Jupiter 1.8592851557852 1.85928417752297 1.85928613404732 2.10797476219408 1.87947613194667 2432303.877075487 1.62497551188851 79.7324164727606 6.956917420973 86.8918091893686 1821673.72773917 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
2022-Mar-01 17:30 < 00:01 Jupiter 1.79367963509424 1.79367910523854 1.79368016494982 2.75383280153003 2.57665339177291 2459640.229091932 0.384221261653466 49.395809996638 13.5403228397773 -87.735148016466 2334467.32512584 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
2032-Sep-19 00:25 < 00:01 Jupiter 1.53173906037789 1.53173867093295 1.53173944982369 1.36832136543328 0.875409313158946 2463494.517566551 0.688251390123195 232.695541184189 127.205026961308 30.4120639089858 2317165.82623636 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
2043-Apr-27 11:45 00:01 Jupiter 1.61034477133833 1.61034413373455 1.61034540894057 1.34792386558497 0.87459827267836 2467366.989325580 1.06846385506202 248.10728483708 119.817578095682 10.0555139268513 1600435.98438809 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
2053-Nov-29 22:11 00:01 Jupiter 1.94974020531721 1.94973924243042 1.94974116820399 2.46216258004767 2.2789005622539 2471236.424474400 1.41033778898855 68.2685912478792 11.5265900631797 75.7474589115946 1931530.89069086 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
2128-Oct-06 23:05 00:04 Jupiter 1.70438621393157 1.70438458664172 1.70438784122065 2.31517129138791 2.08951800716024 2498575.461484444 3.49930550854442 109.182755346691 7.83229223471089 -89.6016638959082 1099842.19481246 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
2139-May-02 17:00 00:04 Jupiter 1.50161872631245 1.50161837371264 1.50161907891747 1.23731068230537 0.63465881368325 2502435.208025848 3.70448335578358 752.549236628855 313.746001979759 4.22284813726794 1542801.58152684 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23
2149-Dec-09 09:41 00:04 Jupiter 1.66207561959211 1.66207356921218 1.66207766996221 1.50123664659382 1.11107013172052 2506308.903288682 4.14300687289488 283.625338893979 84.5594073651679 3.12003170331993 579260.798960442 T 19 CATAB v2.0f-lin.ifort 2020-Jun-23 18:22:58 2020-Jun-23 18:23

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