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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 122 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4060454537589904 1.9664e-07  
a 1.541404105031899 2.4002e-08 AU
q .9155239757782512 3.1451e-07 AU
i 24.52659988783372 1.2173e-05 deg
node 220.7580054426425 1.93e-05 deg
peri 321.6974743644822 3.5326e-05 deg
M 263.3386296565305 8.8317e-05 deg
tp 2457188.182439904617
(2015-Jun-14.68243990)
0.00017556 JED
period 698.9935909824088
1.91
1.6327e-05
4.47e-08
d
yr
n .5150261814189652 1.203e-08 deg/d
Q 2.167284234285547 3.3748e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      8417 days (23.04 yr)  
   first obs. used      1991-10-10  
   last obs. used      2014-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59009  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-30 06:16:37  

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 0.428496957638973 0.42849444789176 0.428499467387912 24.0427610625198 24.0425024303106 2418092.017370976 0.0325377664962804 127.98827079001 13.1483203214616 -21.2525375680883 1657891.45519183 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1909-Dec-27 05:54 < 00:01 Earth 0.499997360754559 0.499996513620471 0.499998207924278 10.3683034752127 10.3677894934503 2418667.745738012 0.329637142637491 163.811185868417 13.1727770501173 80.9856254395402 3820104.5965269 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1910-Apr-24 00:34 < 00:01 Earth 0.107629661833138 0.107627072511067 0.107632251162445 14.8273798956341 14.8257101880503 2418785.523827543 0.118044511985912 105.670078406717 31.9894055702152 16.9622520086098 165253.254666943 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1931-May-07 08:20 00:01 Earth 0.0620403079227469 0.0620096550814059 0.0620709646582488 16.480701745699 16.4780956098423 2426468.847465439 1.21587995234501 1465.73080691558 26.1988708156798 -28.0430805659285 137817.509008397 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1933-Mar-01 14:31 00:01 Earth 0.437295062219993 0.437269581298794 0.437320544870504 15.9501245139688 15.9497425002967 2427133.104934217 1.24570044358048 1684.99562276105 20.4053747339118 35.8922415133805 1540676.31078349 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1952-May-23 20:45 < 00:01 Earth 0.31611000372382 0.31608496686266 0.316135040554199 21.4052297311466 21.4048359470085 2434156.364713234 0.608002354868048 1216.10284870549 23.2591312851069 -11.1217364604782 349240.510258193 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1954-Apr-12 23:18 00:01 Earth 0.212154787954395 0.212131915940575 0.212177660300901 14.6120453404213 14.6111858099417 2434845.470492565 1.07160556156056 981.928865206861 27.0212374126736 21.208283296031 338492.06438543 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1975-May-04 23:15 < 00:01 Earth 0.0372123413164582 0.0372060210736836 0.0372186629849043 16.0510428919638 16.0465813758305 2442537.468888129 0.36581144331676 401.925027840506 23.1492586099053 -49.1090481051044 149268.243364925 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1977-Feb-24 06:06 < 00:01 Earth 0.453927844408771 0.453920977454021 0.45393471153106 16.068963483154 16.0685981890978 2443198.753932719 0.290276918058453 488.047988181716 16.9970528200408 39.2683775139511 2079547.51233942 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1996-May-27 17:14 < 00:01 Earth 0.37929373213074 0.379291669377234 0.379295794884522 22.8197628087368 22.8194549662957 2450231.218316060 0.0737590719384696 101.013127849097 24.7595614809842 -6.51413993770123 553127.997942073 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1998-Jan-03 03:01 < 00:01 Earth 0.488794973890317 0.488794859902146 0.48879508788454 9.33258824018003 9.33200412685798 2450816.625721063 0.245073152878687 115.101930396158 26.0685903299919 77.6400039907101 1761230.15340937 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
1998-Apr-20 10:54 < 00:01 Earth 0.143809773634803 0.143807649809562 0.143811897467224 14.6822671304141 14.6810051590585 2450923.954144839 0.0997560015747435 92.4096628484839 30.9926950578496 26.8978127040698 299713.934666588 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2019-May-16 09:49 < 00:01 Earth 0.186827176132463 0.186817847909311 0.186836504362433 18.6664370682407 18.6656730217858 2458619.909220586 0.270819181303312 434.406545621899 24.6860218136671 -15.4036314545312 263402.895540027 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2021-Mar-28 03:07 < 00:01 Earth 0.325186636586578 0.325177837596575 0.325195435602305 15.2475363681435 15.2469989805424 2459301.629691160 0.434323629697913 428.868071539893 26.9280267537788 23.2189001455191 580934.879608943 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2042-May-03 07:22 < 00:01 Earth 0.0292084595495032 0.0292060591465185 0.0292108682457459 15.822650348286 15.816883963531 2467007.806826675 0.60083457378562 665.671355904029 25.7627642468436 -81.4003379925368 136895.803435232 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2044-Feb-20 13:40 < 00:01 Earth 0.467391896697478 0.467373511494987 0.467410283129935 16.2226112594259 16.222259848613 2467666.069329529 0.911204890430625 1307.68826132772 18.7412199956361 37.0553813146956 1853117.1754231 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2063-May-29 22:21 00:03 Earth 0.402993799586086 0.402860045558091 0.403127553962007 23.3383075712282 23.3380242707749 2474704.431424188 2.81630113643647 6635.3844080848 21.8126683072452 -11.6218794515021 502222.853750097 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2065-Apr-22 23:35 00:06 Earth 0.115874893641026 0.115736709844559 0.116013104808932 14.8249894308102 14.8234382895987 2475398.482564752 6.18896474838992 5775.55643670351 26.5285934419792 20.2345209267226 180438.715088356 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2086-May-19 12:46 00:05 Earth 0.237895925935975 0.237704967379681 0.238086882086252 19.666592537247 19.6660230257177 2483095.031846966 5.15326155018706 9035.81310069341 23.0175416472121 -12.6698459608311 294797.542493313 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2088-Apr-04 11:03 00:08 Earth 0.275867480700642 0.275689576491751 0.276045396979915 14.9575863652179 14.9569406222231 2483780.960078467 8.39503694200317 8167.42243464238 25.6653622944388 22.6381231630025 496105.981661791 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2109-May-08 12:46 00:07 Earth 0.0700951682655799 0.0699246130435001 0.0702658105660379 16.5982676029771 16.5959773077087 2491484.032096011 6.52321617794933 8040.68988475566 24.7089752550401 -26.0602921749406 154548.572326222 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2111-Mar-10 21:34 00:06 Earth 0.42051528023328 0.420379504376768 0.42065108492264 16.1888981951352 16.1885067971972 2492155.398429363 6.33224512034847 8142.79177445293 20.1789587476673 31.8442438589991 1354602.46986291 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2130-Jun-05 10:02 < 00:01 Earth 0.498907858141026 0.498888844993324 0.498926871314636 25.6028383368972 25.6026297410455 2499181.918319214 0.367735033751501 961.7784963088 21.7413552708751 -10.7458072476127 590749.230975415 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2132-May-02 06:53 00:02 Earth 0.0317249536346644 0.0317087231407687 0.0317412241133701 15.6048977335191 15.5995147215353 2499878.786611434 1.49300373305607 1578.37280813326 25.9888188569604 65.8463126158025 135391.202051394 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2134-Feb-14 23:36 00:02 Earth 0.486039248674327 0.48598923892085 0.486089269380199 16.5053207626401 16.50498862246 2500532.483078857 2.01827120958835 3761.99921797806 18.336304507242 39.5265731129594 2091356.5232025 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2153-May-26 10:32 00:09 Earth 0.334632754582449 0.334229293510847 0.335036212285908 21.7228625708395 21.7224960231234 2507572.938879676 9.44222720514301 19698.6932504695 22.2858036472745 -11.8473979197848 410059.456170328 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2155-Apr-17 12:18 00:19 Earth 0.184067168920402 0.1836502188133 0.184484233555875 14.6963906849691 14.6954056766696 2508264.012262377 19.0592247110629 17577.2942586666 26.6055578289492 19.3291275155825 272745.879359351 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2176-May-13 19:39 00:22 Earth 0.144469574740957 0.143774254516669 0.145164952779127 17.8346604845248 17.8336263341166 2515961.318747809 22.1183371477107 31847.2933241951 23.9046041064699 -15.4616901949396 204150.502671051 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2178-Mar-24 12:45 00:28 Earth 0.358212804644068 0.357588794490793 0.358837070975437 15.6901457983681 15.689671719243 2516641.031331874 28.3939628891764 32554.0941691376 23.1088850005619 26.9826271736056 857554.915869765 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
2199-May-02 14:09 00:28 Earth 0.0348098979156765 0.0344122412428834 0.0352183516702625 15.5527582919067 15.5478359597607 2524350.089746114 27.9879958595715 29455.2119842827 25.6741999621257 56.8958500995034 137893.117415176 T 122 CATAB v2.0c-linF95 2014-Oct-30 06:16:44 2014-Oct-30 06:16
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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