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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 151 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .406045460417304 1.9041e-07  
a 1.541404115626772 2.0486e-08 AU
q .9155239718079722 3.0401e-07 AU
i 24.52659478747596 1.0294e-05 deg
node 220.7580104315026 1.33e-05 deg
peri 321.6974909638366 3.2091e-05 deg
M 263.3385789538311 6.9986e-05 deg
tp 2457188.182540286516
(2015-Jun-14.68254029)
0.00013928 JED
period 698.9935981892294
1.91
1.3935e-05
3.815e-08
d
yr
n .5150261761089004 1.0268e-08 deg/d
Q 2.167284259445573 2.8805e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      8511 days (23.30 yr)  
   first obs. used      1991-10-10  
   last obs. used      2015-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54216  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-23 05:16:41  

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 MPO319241  
rotation period rot_per 5.833 h n/a LCDB (Rev. 2015-Feb); 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. (2015) Minor Planet Bul. 42, submitted. (NEA gaggle)]
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 0.428496785464867 0.428494336250018 0.428499234681179 24.0427543906299 24.042495758245 2418092.017379032 0.0254210893982233 124.494929686125 9.16224256713967 -20.674130738487 2282626.13268074 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1909-Dec-27 05:54 < 00:01 Earth 0.499997130136396 0.499996321980424 0.499997938319563 10.3682869486823 10.3677729658635 2418667.745848637 0.27383478337854 142.74545001385 12.2894031616121 80.0608529021365 4083805.49480725 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1910-Apr-24 00:34 < 00:01 Earth 0.107630283165953 0.107628235988038 0.107632330347059 14.827374494172 14.8257047956194 2418785.523772070 0.0970162766914114 83.2866477655979 31.1235277998581 15.4666240489429 185209.9694857 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1931-May-07 08:20 00:01 Earth 0.0620352737753944 0.0620095296942165 0.062061020550792 16.4806169310713 16.4780105702954 2426468.847055765 1.03009289190859 1228.69041356619 23.5236710406169 -27.8439659491132 152488.245066861 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1933-Mar-01 14:29 00:01 Earth 0.437299133086746 0.437277581421317 0.437320685995069 15.9501314864219 15.949749476473 2427133.103460717 1.03885705901897 1426.83383794221 18.3896722439254 36.0333039625502 1715408.06184625 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1952-May-23 20:45 < 00:01 Earth 0.316106024212002 0.316084834363351 0.316127214037843 21.4051381459555 21.4047443551751 2434156.364485628 0.526164723199791 1029.21743254272 20.4292840757633 -11.0396874805158 394885.929922613 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1954-Apr-12 23:17 < 00:01 Earth 0.212158362840403 0.212138935820843 0.212177790112648 14.6120497227975 14.6111902070593 2434845.470069609 0.910757700438747 836.873300556988 22.7692248791857 21.6683371458527 409945.872027198 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1975-May-04 23:15 < 00:01 Earth 0.0372116387865451 0.0372059762876797 0.0372173023780995 16.0510250856404 16.0465634803142 2442537.468805023 0.331620154741988 355.401184213522 19.9636000373974 -48.4564035985357 171361.607888857 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1977-Feb-24 06:05 < 00:01 Earth 0.453928538793626 0.453922293884633 0.453934783840293 16.0689618067849 16.0685965132494 2443198.753598830 0.253210175992026 443.528951079292 15.9996856255892 39.4174664885666 2216331.49924154 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1996-May-27 17:14 < 00:01 Earth 0.379293885560392 0.379291860468261 0.379295910652178 22.8197640681291 22.8194562258296 2450231.218343024 0.0691442072520611 99.2153400062582 20.6618850468241 -5.41508848828803 561982.968649093 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1998-Jan-03 03:01 < 00:01 Earth 0.48879505748247 0.488794974755877 0.488795140206268 9.33258161198703 9.33199749835 2450816.625745723 0.236765049762896 113.608985004804 24.1950069098974 77.5582178415643 1896776.40388718 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
1998-Apr-20 10:54 < 00:01 Earth 0.1438094901215 0.14380752008556 0.143811460163941 14.6822663419905 14.6810043680791 2450923.954175299 0.0887724564941863 85.7760847627355 29.9811078016413 27.9670587386311 320752.914118727 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2019-May-16 09:49 < 00:01 Earth 0.186828728313954 0.186821021617367 0.186836435016697 18.6664642933753 18.6657002543827 2458619.909337445 0.211180886791497 359.456068902583 22.3687651978812 -15.8206830158685 299186.001753733 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2021-Mar-28 03:07 < 00:01 Earth 0.325185119763545 0.325177916433869 0.325192323106339 15.2475234867238 15.246986096162 2459301.629925125 0.362590048711926 347.686983300911 22.8964490392184 22.0143641849734 651200.703456611 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2042-May-03 07:22 < 00:01 Earth 0.0292089384042711 0.0292070305064837 0.0292108520862005 15.8226772817701 15.8169110013861 2467007.807030559 0.494921035557919 559.841064551447 22.7052895195126 -81.9192023171473 155539.361568371 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2044-Feb-20 13:42 < 00:01 Earth 0.467388911298578 0.467373628004691 0.467404195444718 16.2226221098778 16.2222706970553 2467666.070786839 0.77469762765402 1086.89028926041 17.3930612508646 36.9235816380124 1990745.63565206 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2063-May-29 22:23 00:02 Earth 0.403014095215947 0.402901041987806 0.403127148692485 23.3387854451642 23.3385021647783 2474704.432653293 2.36863755060136 5608.23537677616 18.9201521949167 -11.6291155427487 579393.757528107 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2065-Apr-22 23:38 00:05 Earth 0.115853917841785 0.115737126857061 0.115970728260721 14.8250908578451 14.8235394463941 2475398.484611886 5.22367763855157 4878.97583168436 22.5974824122646 20.1602307207517 211044.638150777 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2086-May-19 12:49 00:04 Earth 0.237924884663953 0.237763488357445 0.23808627926986 19.6671851711868 19.6666157461354 2483095.033734973 4.34296055380975 7637.40166022723 20.4069658940992 -12.6866858291696 332989.936476019 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2088-Apr-04 11:08 00:07 Earth 0.275840449964257 0.275690146478642 0.275990761974979 14.95742653977 14.9567807265939 2483780.963788860 7.09614083800106 6896.78940359958 20.8708841716586 22.5777634230204 608466.550815947 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2109-May-08 12:49 00:06 Earth 0.0701210417569697 0.0699769108478709 0.070265235006285 16.5986776287956 16.5963882352287 2491484.034190484 5.50213490436566 6796.42783364874 21.8499708059857 -26.0885137481474 175013.445103651 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2111-Mar-10 21:41 00:05 Earth 0.420494613725623 0.42037998266818 0.420609265276511 16.1887291549203 16.1883377336584 2492155.403797182 5.35889600872853 6871.54461604999 17.0400085510011 31.8018684476125 1602139.46029654 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2130-Jun-05 10:02 < 00:01 Earth 0.498904769584861 0.498888932312527 0.498920606875821 25.6027586389646 25.6025500411721 2499181.918156769 0.317236473563854 801.6267119595 18.5984677178688 -10.7420988871334 690599.132313665 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2132-May-02 06:52 00:01 Earth 0.0317276070850619 0.0317140910276038 0.0317411514292296 15.6048318967824 15.5994493123527 2499878.786136306 1.26281078770351 1325.47549729614 22.8008404084295 66.0718159925883 154606.085921339 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2134-Feb-14 23:29 00:02 Earth 0.486046811556151 0.486004495448387 0.486089135482387 16.5053268088056 16.5049946739153 2500532.478813956 1.69142586088833 3181.76764140069 17.4914225259773 39.5477625335703 2193401.96418032 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2153-May-26 10:27 00:08 Earth 0.334571053477762 0.334230837399534 0.33491126714557 21.7214704084652 21.721103769653 2507572.935095213 7.97494229183372 16610.5446258339 19.5556444392967 -11.8428588652082 467039.300684337 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2155-Apr-17 12:08 00:16 Earth 0.184130893641111 0.183779249310624 0.184482619619883 14.696401133658 14.6954164669655 2508264.005340142 16.0764287200919 14826.992543621 22.1600764938362 19.3572916807858 328033.681346015 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2176-May-13 19:28 00:19 Earth 0.144363488876977 0.143776941466558 0.144950077466974 17.8327595260629 17.8317245053576 2515961.311311525 18.673414837865 26863.4412792153 21.2500398797039 -15.4605146229164 229460.39354833 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2178-Mar-24 12:21 00:24 Earth 0.358307936002098 0.357781475503871 0.358834579340104 15.6910732725634 15.6905993473245 2516641.014475598 23.9449517706755 27472.2278478109 18.6920663885154 27.0018719447867 1061192.14741326 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
2199-May-02 13:57 00:24 Earth 0.0348714964346753 0.0345342302909234 0.0352164057535246 15.551633852512 15.5467198613744 2524350.080918195 23.6150645747552 24839.4495651475 22.368320895996 56.7659688894818 158314.209979146 T 151 CATAB v2.0c-linF95 2015-Feb-23 05:16:45 2015-Feb-23 05:16
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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