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12538 (1998 OH)
Classification: Apollo [NEO, PHA]          SPK-ID: 2012538
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 137 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4060454520126884 1.9513e-07  
a 1.541404111535339 2.167e-08 AU
q .9155239823327559 3.1174e-07 AU
i 24.52659875420412 1.0976e-05 deg
node 220.7580053415137 1.4523e-05 deg
peri 321.6974841864877 3.3172e-05 deg
M 263.3386019514425 7.6476e-05 deg
tp 2457188.182494885965
(2015-Jun-14.68249489)
0.00015211 JED
period 698.9935954061638
1.91
1.474e-05
4.036e-08
d
yr
n .5150261781594938 1.0861e-08 deg/d
Q 2.167284240737922 3.0469e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      604  
   data-arc span      8464 days (23.17 yr)  
   first obs. used      1991-10-10  
   last obs. used      2014-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57985  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Dec-16 05:20:16  

Additional Information
 Earth MOID = .0275607 AU 
 T_jup = 4.281 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7 mag n/a MPO313520  
SMASSII spectral type spec_B S:   n/a Binzel et al. (2004) Icarus 170, 259-294 SMASSIR data only, classification consistent with specified type, but uncertain

12538 (1998 OH)          Discovered 1998-Jul-19 by JPL/GEODSS NEAT at Haleakala (566)
Reference: 19991123/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
1908-May-30 12:25 < 00:01 Earth 0.428496889839112 0.428494401197538 0.428499378482267 24.0427582370998 24.0424996048193 2418092.017372040 0.0274799719463936 126.60125307218 10.1252087446862 -20.8768716082378 2090852.06175781 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1909-Dec-27 05:54 < 00:01 Earth 0.499997248226357 0.499996428475962 0.499998068006755 10.3682948786434 10.3677808963392 2418667.745796568 0.295602480856461 150.072607799964 12.577805896449 80.4376452399955 3994624.47540453 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1910-Apr-24 00:34 < 00:01 Earth 0.10763000786921 0.107627820802383 0.107632194940031 14.8273776032804 14.825707900807 2418785.523794224 0.101956898830127 89.0304772838469 31.7675692424529 16.1016273765057 178539.426098781 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1931-May-07 08:20 00:01 Earth 0.0620372443205264 0.0620099741784167 0.0620645174971039 16.4806509057267 16.4780446331191 2426468.847212480 1.08748252362574 1302.06704610087 24.2949095865137 -27.8839311809399 147842.413964603 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1933-Mar-01 14:30 00:01 Earth 0.437297564733024 0.437274791129811 0.437320339723557 15.950130375848 15.9497483645025 2427133.104046932 1.10321039582876 1507.6084806141 18.8545841228575 36.0157555382441 1672384.21031913 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1952-May-23 20:45 < 00:01 Earth 0.316107567487601 0.316085177114271 0.316129957835392 21.4051741145282 21.4047803263321 2434156.364568422 0.551750003545116 1087.52344405328 21.0435918499472 -11.0325273622243 383019.443170157 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1954-Apr-12 23:17 < 00:01 Earth 0.212156985452562 0.212136480788821 0.212177490394653 14.6120488510449 14.611189329675 2434845.470233453 0.961016951128865 882.312589862561 24.0187051026293 21.5496940162736 386601.850113659 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1975-May-04 23:15 < 00:01 Earth 0.0372118863089182 0.0372059946410715 0.0372177791709172 16.0510323812802 16.0465708076639 2442537.468830888 0.342985587370765 370.791635873566 20.7876695517926 -48.5860321078575 164897.041131961 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1977-Feb-24 06:05 < 00:01 Earth 0.453928320737157 0.453921863161107 0.453934778461297 16.0689643145878 16.0685990209339 2443198.753731187 0.265462073696243 459.219498416049 16.201628418894 39.4510638991836 2190170.45114966 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1996-May-27 17:14 < 00:01 Earth 0.379293789228093 0.379291744931689 0.379295833524145 22.8197631268179 22.8194552844275 2450231.218324832 0.0705832606553086 100.105534853175 22.095927475479 -5.79841633540352 557654.158932957 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1998-Jan-03 03:01 < 00:01 Earth 0.4887950316186 0.488794953752 0.488795109466444 9.33258478164231 9.33200066817277 2450816.625734608 0.24242950394597 114.678086394969 24.6865866325814 77.5661495129804 1859105.01435201 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
1998-Apr-20 10:54 < 00:01 Earth 0.143809640403058 0.143807606090335 0.143811674722412 14.6822673426367 14.6810053701302 2450923.954157292 0.0925663690607613 88.4061903100231 30.7615703363643 27.3056255243058 308021.497095543 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2019-May-16 09:49 < 00:01 Earth 0.186828089352509 0.186819811684137 0.186836367027814 18.6664536421422 18.6656896001004 2458619.909284725 0.231923629058822 385.933941345269 22.9742540889095 -15.7493396315412 289508.854500346 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2021-Mar-28 03:07 < 00:01 Earth 0.325185753067112 0.325177992211908 0.32519351393972 15.2475296484868 15.2469922591887 2459301.629831159 0.387657599238082 375.916218169185 24.1466669437572 22.3800546293813 626553.49270544 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2042-May-03 07:22 < 00:01 Earth 0.0292087394634142 0.0292066782728215 0.0292108072528194 15.8226673546223 15.816901031338 2467007.806945823 0.531175406419302 596.243184818518 23.6327027244906 -81.7845077729825 149384.100199177 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2044-Feb-20 13:41 < 00:01 Earth 0.467390123573763 0.467373779479283 0.467406468640197 16.2226196235303 16.2222682115655 2467666.070222560 0.821614463617124 1161.77496563317 17.6749768236164 36.9310383712706 1959294.65026004 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2063-May-29 22:22 00:03 Earth 0.403006090621132 0.402885882103643 0.403126299420452 23.3385973204775 23.3383140321816 2474704.432163319 2.52306120090165 5963.27978925156 19.4787908473318 -11.6319443559835 562895.424874885 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2065-Apr-22 23:37 00:06 Earth 0.115862192989048 0.115738006825936 0.115986401157496 14.8250516352812 14.8235003305367 2475398.483801816 5.55714944430792 5188.75243326795 23.8353128866376 20.1812699904695 200298.74659461 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2086-May-19 12:47 00:05 Earth 0.237913463499996 0.237741853740452 0.238085071334551 19.6669519643612 19.6663825052212 2483095.032985754 4.62266213827621 8120.5810767533 21.000689267745 -12.684692945989 323507.816483587 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2088-Apr-04 11:06 00:08 Earth 0.275851120243169 0.275691283582842 0.276010966572356 14.9574903869992 14.9568446015612 2483780.962325417 7.54479890393279 7335.55100660238 22.3092717087113 22.5954158783135 569680.749935944 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2109-May-08 12:48 00:06 Earth 0.0701108315460374 0.0699575787336525 0.0702641548142358 16.5985165921954 16.5962268429844 2491484.033359633 5.85466690291482 7226.23327445322 22.6656319601221 -26.0830068006041 168656.832445738 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2111-Mar-10 21:38 00:06 Earth 0.420502788488036 0.420380858480042 0.4206247417005 16.1887970880558 16.1884056760459 2492155.401685580 5.69500851338854 7310.01262288121 17.7980267083356 31.8119423086286 1534370.79621481 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2130-Jun-05 10:02 < 00:01 Earth 0.498905995749718 0.498889082288575 0.498922909231803 25.6027905534014 25.6025819563816 2499181.918215063 0.334582462387295 855.900070222598 19.2078715491477 -10.704457675393 666090.240045755 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2132-May-02 06:52 00:01 Earth 0.0317265495475614 0.0317121187357469 0.0317410124375259 15.6048586901923 15.5994759355599 2499878.786320466 1.34166821594764 1412.04378884986 23.7831256959076 66.0126399233515 148147.433670295 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2134-Feb-14 23:32 00:02 Earth 0.486043860450943 0.485998891479271 0.486088838267554 16.5053263282767 16.5049941913601 2500532.480513894 1.80372756066018 3382.5055518411 17.6802056002591 39.5536127889003 2170232.11026919 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2153-May-26 10:29 00:08 Earth 0.334595375293577 0.334233347745226 0.334957400113957 21.7220195951809 21.7216529922891 2507572.936582091 8.48123543760343 17675.5488264514 20.1168192119772 -11.8426228479026 454036.891431341 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2155-Apr-17 12:12 00:17 Earth 0.184105781248709 0.183731611606625 0.184480043291554 14.6963977792595 14.6954129780272 2508264.008066216 17.1052946499697 15775.7026522292 23.5526748739778 19.3489219750337 308467.45339328 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2176-May-13 19:33 00:20 Earth 0.14440528918008 0.143781205282067 0.145029419630765 17.8335091666481 17.8324744890515 2515961.314237088 19.8623189688294 28583.2151398251 21.9439128917506 -15.4595952800571 222258.87130025 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2178-Mar-24 12:30 00:25 Earth 0.358270468472399 0.357710340106906 0.358830803621802 15.6907087777786 15.6902347919656 2516641.021121216 25.4803501407935 29226.2642098825 19.9194591386131 26.9958496804174 995486.481334198 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
2199-May-02 14:02 00:25 Earth 0.0348471975615916 0.0344890796997058 0.035213986504277 15.5520774596507 15.5471601817648 2524350.084391981 25.1245518735827 26432.6996329598 23.3862410926043 56.8186132698228 151410.33638582 T 137 CATAB v2.0c-linF95 2014-Dec-16 05:20:21 2014-Dec-16 05:20
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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