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39886 (1998 EL12)
Classification: Main-belt Asteroid          SPK-ID: 2039886
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0816718116684461 3.991e-08  
a 2.993742900682329 1.9634e-08 au
q 2.749238494314054 1.2587e-07 au
i 11.03585408390946 4.6785e-06 deg
node 139.6641742684386 2.3048e-05 deg
peri 121.6866292607991 3.8078e-05 deg
M 23.58735158905255 3.0263e-05 deg
tp 2458876.535635588361
(2020-Jan-28.03563559)
0.000159 TDB
period 1891.995844455158
5.18
1.8612e-05
5.096e-08
d
yr
n .1902752593537911 1.8718e-09 deg/d
Q 3.238247307050603 2.1237e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1529  
   data-arc span      7745 days (21.20 yr)  
   first obs. used      1998-02-26  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50543  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:12:06  

Additional Information
 Earth MOID = 1.75258 au 
 Jupiter MOID = 1.93259 au 
 T_jup = 3.222 
[ 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 13.2   n/a MPO347806  
diameter diameter 8.198 km 0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.530461 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.166   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39886 (1998 EL12)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20020526/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
1928-Sep-11 12:21 00:03 Jupiter 1.92544993186897 1.92544946396545 1.92545039977249 2.96882374257806 2.81675285781164 2425501.014603210 2.56795164884113 150.571609071621 15.6017205448785 82.0620582722218 2540124.38604724 T 27 CATAB v2.0e-lin.ifort 2019-May-30 04:12:16 2019-May-30 04:12
1965-Aug-16 10:22 00:01 Jupiter 1.97175768127808 1.97175717960617 1.97175818294999 2.75464463064143 2.59401469999421 2438988.932056757 1.464064137146 64.4473629166337 19.0112573649961 85.8331633957505 2646100.88551771 T 27 CATAB v2.0e-lin.ifort 2019-May-30 04:12:16 2019-May-30 04:12
2011-Apr-23 01:43 < 00:01 Jupiter 1.94287287216459 1.94287241819542 1.94287332613376 3.43799269046121 3.30875593781401 2455674.571335516 0.232382424072729 38.8307108852969 17.1564517963346 77.1589696447885 2883677.23732859 T 27 CATAB v2.0e-lin.ifort 2019-May-30 04:12:16 2019-May-30 04:12
2048-Mar-19 02:12 00:01 Jupiter 1.94413630952605 1.94413581394114 1.94413680511096 2.53685425717302 2.35887012761135 2469154.591507667 1.14697753420322 75.833061415495 17.7400724756277 85.3397591865807 3036137.18996702 T 27 CATAB v2.0e-lin.ifort 2019-May-30 04:12:16 2019-May-30 04:12
2093-Dec-06 02:31 00:02 Jupiter 1.98562225656752 1.98562159960986 1.98562291352788 3.9568776648628 3.84756093021158 2485852.604629195 2.33987955733957 171.152822968103 19.9270069618583 -84.9579054546686 2936694.58125233 T 27 CATAB v2.0e-lin.ifort 2019-May-30 04:12:16 2019-May-30 04:12
2130-Oct-22 19:39 00:04 Jupiter 1.93682285581658 1.9368223674531 1.93682334418005 2.6066025239469 2.43304854243002 2499321.318945833 3.72793163315005 216.430618605705 14.6540936207105 84.0689835748392 3013038.21163597 T 27 CATAB v2.0e-lin.ifort 2019-May-30 04:12:16 2019-May-30 04:12
2167-Sep-19 01:20 00:05 Jupiter 1.98399857501992 1.98399774151605 1.98399940852447 3.15488381261165 3.01652745972267 2512801.555251556 4.58983947372982 113.156514839227 19.9885251561921 -87.0603762955907 1401503.19119343 T 27 CATAB v2.0e-lin.ifort 2019-May-30 04:12:16 2019-May-30 04:12

Alternate Designations
 1998 EL12 = 2000 QU102 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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