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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1794863810866501 3.5828e-08  
a 3.15817703861866 1.8101e-08 au
q 2.591327271126043 1.1141e-07 au
i 1.995849612317966 4.752e-06 deg
node 38.76930173340437 0.0001224 deg
peri 47.52030101759569 0.00012333 deg
M 159.1326111987577 1.5779e-05 deg
tp 2458094.329702396458
(2017-Dec-06.82970240)
8.55e-05 TDB
period 2049.996570029398
5.61
1.7625e-05
4.825e-08
d
yr
n .1756100499206384 1.5098e-09 deg/d
Q 3.725026806111276 2.135e-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 = 1.60813 au 
 Jupiter MOID = 1.50743 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 13.6   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 1.89066340262922 1.89066176898957 1.89066503626974 3.26961410696257 3.12959594674115 2420712.227963813 2.83706273859578 116.732119204584 27.5290979831719 64.8542132277452 1556322.06273427 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
1926-Feb-17 01:44 00:03 Jupiter 1.58530289159136 1.58530195985904 1.58530382332089 1.59383803610943 1.21314705009599 2424563.572530609 2.49940450388329 182.00778211656 89.4023353082281 8.23985784626433 872228.249517375 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
1936-Sep-22 04:42 00:02 Jupiter 1.56984318512397 1.56984266667844 1.56984370356987 1.24696767370417 0.68979056277289 2428433.695526199 2.01750839050473 427.988282627169 203.387493190678 16.8493507827235 2096904.92427502 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
1947-Apr-28 09:03 00:02 Jupiter 1.85928500744522 1.85928401315114 1.85928600173931 2.10797442597557 1.87947573551358 2432303.877358406 1.66981096101526 81.7134156594892 7.09843962586824 86.9736934601532 1786927.35295396 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
2022-Mar-01 17:30 < 00:01 Jupiter 1.79367967570718 1.79367911251989 1.79368023889426 2.75383328911027 2.57665391703048 2459640.229049717 0.401519970719135 50.1121727070402 14.2594397822408 -87.6224285214641 2183385.00244735 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
2032-Sep-19 00:25 < 00:01 Jupiter 1.53173925735017 1.53173884542868 1.53173966927253 1.36832227863358 0.875410821779783 2463494.517471462 0.716642892901514 246.892569634312 133.608206181174 29.274628817733 2166912.29078463 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
2043-Apr-27 11:44 00:01 Jupiter 1.61034504302324 1.6103443873048 1.61034569874012 1.34792496941399 0.874600075354147 2467366.989155424 1.10808336247473 252.525990088623 124.304860656333 10.3415322403226 1569046.74445215 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
2053-Nov-29 22:11 00:01 Jupiter 1.94974040161036 1.94973938402271 1.949741419198 2.4621634707146 2.27890154373746 2471236.424274172 1.46341606180037 71.4572489462312 12.2037147660116 75.5105168527636 1857503.75132605 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
2128-Oct-06 23:04 00:04 Jupiter 1.70438594633236 1.70438423357722 1.70438765908644 2.31517008044492 2.08951662810179 2498575.460920550 3.61827728201232 111.396856868766 8.17620926076072 -89.6091469561535 1034496.53991051 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
2139-May-02 16:59 00:04 Jupiter 1.50161893053569 1.50161856136596 1.50161929971072 1.23731125568005 0.63466005239147 2502435.207423836 3.82885799164668 803.883600745946 321.51212014581 4.60262819661897 1448014.22787946 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36
2149-Dec-09 09:40 00:04 Jupiter 1.66207621333411 1.6620740893946 1.66207833726303 1.5012385982946 1.11107293263538 2506308.902627037 4.28208984357676 292.652811119392 88.3065986527952 3.13129103667078 560353.932943774 T 18 CATAB v2.0e-lin.ifort 2019-May-30 02:36:39 2019-May-30 02:36

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