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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 111 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4060454798916287 1.9905e-07  
a 1.541404091089188 2.7981e-08 AU
q .9155239272159591 3.1947e-07 AU
i 24.52660451607783 1.256e-05 deg
node 220.7579921541422 2.1703e-05 deg
peri 321.6974668219034 4.0215e-05 deg
M 263.3386863370014 0.00010511 deg
tp 2457188.182327304536
(2015-Jun-14.68232730)
0.00020894 JED
period 698.9935814983298
1.91
1.9033e-05
5.211e-08
d
yr
n .5150261884069391 1.4024e-08 deg/d
Q 2.167284254962417 3.9343e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      479  
   data-arc span      8386 days (22.96 yr)  
   first obs. used      1991-10-10  
   last obs. used      2014-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59881  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-26 06:17:00  

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 15.8 mag n/a MPO253452  
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 0.428496882241638 0.428494366905987 0.42849939757911 24.0427622990154 24.042503666774 2418092.017351267 0.0350752050060809 128.506711324774 14.451125849853 -21.4873180652072 1532727.49214888 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1909-Dec-27 05:54 < 00:01 Earth 0.499997597925662 0.499996682476919 0.499998513423997 10.3683165068936 10.3678025260211 2418667.745638526 0.384194018404226 190.472671021348 13.5475887293688 81.5282197573018 3719741.1352227 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1910-Apr-24 00:34 < 00:01 Earth 0.107629166363088 0.107625995221127 0.107632337518 14.8273854747531 14.8257157601108 2418785.523864054 0.144637808613126 130.286126489463 32.2762414202045 18.4251019507167 156921.640762853 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1931-May-07 08:21 00:01 Earth 0.0620464553674273 0.0620100730299942 0.0620828432853509 16.4808046967432 16.4781988353987 2426468.847960921 1.44020837451255 1742.46982809812 27.7097299539501 -28.2166146208315 131041.685677257 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1933-Mar-01 14:34 00:01 Earth 0.437290032627246 0.437259891512874 0.437320176154707 15.9501156198395 15.9497336015605 2427133.106713770 1.483232472599 1991.57037134161 21.532467667772 35.7753058822376 1455852.87329264 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1952-May-23 20:46 < 00:01 Earth 0.316114963362834 0.316085394484338 0.316144532201681 21.4053436368852 21.4049498610209 2434156.365002592 0.710860516834387 1436.58565275154 25.1054355433951 -11.2845935212481 327950.338981862 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1954-Apr-12 23:18 00:01 Earth 0.212150288251156 0.212123337438257 0.212177239507446 14.6120405942082 14.6111810452183 2434845.471013296 1.26458559581177 1155.12720785662 28.8798590561863 20.9003825283418 312191.842657484 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1975-May-04 23:15 < 00:01 Earth 0.0372134189151293 0.0372063028490894 0.0372205368825756 16.0510678399967 16.0466064600109 2442537.469006671 0.413182207341206 459.005912460381 25.3764066050429 -49.79745099224 137560.362881706 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1977-Feb-24 06:06 < 00:01 Earth 0.453926743151924 0.45391905626609 0.453934430248434 16.068965123281 16.0685998283759 2443198.754400588 0.332626478633724 546.016959420894 17.8261443970985 39.0051464731271 1971471.30451083 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1996-May-27 17:14 < 00:01 Earth 0.379293687485142 0.379291617424679 0.379295757545854 22.819764446795 22.8194566043398 2450231.218297801 0.074962861936979 101.293483245431 25.8826871002247 -6.56272352977115 548297.851615474 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1998-Jan-03 03:01 < 00:01 Earth 0.488794960374865 0.488794767610255 0.488795153133847 9.33259743486961 9.33201332210692 2450816.625672573 0.251454297409009 115.575434180219 28.6261140089047 77.1433593428944 1601356.38838104 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
1998-Apr-20 10:54 < 00:01 Earth 0.143809975425587 0.143807752023236 0.143812198834829 14.6822691679723 14.6810071985627 2450923.954114445 0.104553987195041 96.454709335849 31.1949976617227 26.2065567536349 290120.825756107 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2019-May-16 09:49 < 00:01 Earth 0.186825308530139 0.186814308367959 0.186836308697848 18.6664040440669 18.6656399886222 2458619.909080271 0.323902100609901 511.401486306742 26.2630024454959 -14.9031015348881 239104.68234805 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2021-Mar-28 03:06 < 00:01 Earth 0.325188431589577 0.325178005759102 0.325198857461089 15.2475525415463 15.2470151574816 2459301.629391083 0.508980948415097 509.752441025401 28.3228943781411 23.8021511178688 563869.666090772 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2042-May-03 07:21 < 00:01 Earth 0.0292079396767211 0.02920501209032 0.0292108788337915 15.8226161534449 15.8168496535685 2467007.806565799 0.708315872310848 780.465546298573 27.48704011829 -80.9895396534731 128163.008170088 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2044-Feb-20 13:37 00:01 Earth 0.467395619002319 0.467373944581074 0.467417295133783 16.2225971261614 16.222245717841 2467666.067461905 1.06394742605812 1542.71006762401 19.5924357288701 37.1829914176728 1777774.15157165 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2063-May-29 22:19 00:03 Earth 0.402967702377707 0.402811370578889 0.403124034641512 23.3376928423369 23.3374095160734 2474704.429851093 3.29850176582229 7755.151828514 23.8728354390776 -11.5943324679501 457769.996865039 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2065-Apr-22 23:31 00:07 Earth 0.115901859972088 0.115740349096154 0.116063408411482 14.8248595534702 14.8233087595867 2475398.479926940 7.23616919862346 6752.49793267113 28.3638340237204 20.284246971933 169198.17400309 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2086-May-19 12:42 00:06 Earth 0.237858680211114 0.237635449564286 0.238081907520151 19.6658298327869 19.6652602099863 2483095.029424111 6.03089691745591 10562.0716699598 24.9466575676348 -12.6455852564397 271440.631719557 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2088-Apr-04 10:56 00:10 Earth 0.275902209250655 0.275694194429296 0.276110240688558 14.9577927168264 14.9571470640225 2483780.955293280 9.81165888635636 9552.09210638545 27.6156314354577 22.675223812874 461844.556923903 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2109-May-08 12:42 00:08 Earth 0.0700619113586545 0.069862499045527 0.0702614424968009 16.5977398259981 16.5954483706283 2491484.029399901 7.63139233171027 9399.69472212894 26.5250119849465 -26.0381279470829 143783.086082608 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2111-Mar-10 21:24 00:07 Earth 0.420541804370294 0.420382989043349 0.420700659207233 16.1891152709056 16.1887239029018 2492155.391500731 7.39833200780413 9527.05680696577 21.7646119500491 31.8737867638542 1257039.28827151 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2130-Jun-05 10:03 < 00:01 Earth 0.498911716847343 0.498889214555884 0.498934219175495 25.6029379046083 25.6027293111811 2499181.918529889 0.428392514658082 1138.31381176329 23.7790799315815 -10.9148585580342 547864.803779494 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2132-May-02 06:54 00:02 Earth 0.031721665202791 0.0317024650384299 0.0317409205420035 15.6049813613385 15.5995978200884 2499878.787211250 1.75240166023735 1856.10828067148 27.7065892767385 65.6788747803313 126816.344639857 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2134-Feb-14 23:43 00:02 Earth 0.486029501430346 0.485970963833627 0.486088054041222 16.5053133658365 16.5049812188464 2500532.488525456 2.3724231045929 4403.07691697512 18.8839092470278 39.4899284961048 2029086.71097268 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2153-May-26 10:39 00:11 Earth 0.334711979737541 0.334239222426239 0.335184732487587 21.7246499004708 21.724283469666 2507572.943742424 11.0559361028559 23082.9103200431 24.2812530925935 -11.8573034965518 376765.836354648 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2155-Apr-17 12:30 00:22 Earth 0.183985311204592 0.18349679408415 0.18447398531854 14.6963783594266 14.6953929120415 2508264.021140974 22.331485574844 20592.2604485044 28.4873343172495 19.3107449624296 254382.261753157 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2176-May-13 19:53 00:26 Earth 0.144605921076792 0.143791426003349 0.145420495315433 17.8371035530752 17.8360705192948 2515961.328306359 25.8977014720538 37308.517557725 25.7486907534533 -15.4615898691614 189714.611161397 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2178-Mar-24 13:16 00:33 Earth 0.358090472806712 0.357359522467244 0.358821773874304 15.6889545888313 15.688480311739 2516641.052973919 33.2692649994566 38124.1362651185 24.9931003653104 26.967010888793 792188.717876552 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
2199-May-02 14:26 00:33 Earth 0.0347310757442692 0.0342683947170773 0.0352086767111827 15.5542056372463 15.5492725913126 2524350.101096837 32.7909583414805 34520.939671473 27.4639314477073 57.0703986456214 128874.126630958 T 111 CATAB v2.0c-linF95 2014-Sep-26 06:17:03 2014-Sep-26 06:17
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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