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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 152 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4060454604059214 1.9041e-07  
a 1.541404115617722 2.0486e-08 AU
q .9155239718201422 3.0401e-07 AU
i 24.52659478757887 1.0294e-05 deg
node 220.7580104314487 1.33e-05 deg
peri 321.6974909646188 3.2091e-05 deg
M 263.3385789609924 6.9986e-05 deg
tp 2457188.182540270958
(2015-Jun-14.68254027)
0.00013928 JED
period 698.9935981830732
1.91
1.3935e-05
3.815e-08
d
yr
n .5150261761134363 1.0268e-08 deg/d
Q 2.167284259415303 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-Mar-09 14:31:22  

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-May); 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, 115-127.]
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
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 0.428496789129452 0.428494339911784 0.428499238348568 24.0427544886511 24.0424958562695 2418092.017378870 0.0254211261169129 124.495065439274 9.16224536751005 -20.6741196212242 2282624.26559957 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1910-Apr-24 00:34 < 00:01 Earth 0.107630279932646 0.107628232755091 0.107632327113393 14.8273745188996 14.8257048202996 2418785.523771949 0.0970162385478396 83.2866224305433 31.1235149511836 15.4665832673752 185209.882391178 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1931-May-07 08:20 00:01 Earth 0.0620352741685049 0.0620095300888266 0.0620610209424027 16.4806169315501 16.4780105707908 2426468.847056101 1.03009283220903 1228.69033996012 23.5236712349136 -27.8439657448076 152488.243760873 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1933-Mar-01 14:29 00:01 Earth 0.43729913282712 0.437277581163083 0.43732068573405 15.950131448583 15.949749438633 2427133.103460400 1.03885700272945 1426.83375208062 18.3896724478958 36.0333041187847 1715408.04693296 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1952-May-23 20:45 < 00:01 Earth 0.316106025727307 0.316084835879851 0.316127215551953 21.4051381732181 21.40474438244 2434156.364485996 0.52616469642027 1029.21737519586 20.4292842363794 -11.0396874836665 394885.929187567 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1954-Apr-12 23:17 < 00:01 Earth 0.212158361276482 0.212138934257905 0.212177788547745 14.6120497240742 14.6111902083297 2434845.470070572 0.910757634805449 836.873256130535 22.769225252271 21.6683371079982 409945.861753971 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1975-May-04 23:15 < 00:01 Earth 0.0372116394419943 0.0372059769431111 0.0372173030335662 16.0510251008123 16.0465634955689 2442537.468805010 0.331620147045691 355.401176466018 19.96360031719 -48.4564023206361 171361.605204797 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1977-Feb-24 06:05 < 00:01 Earth 0.453928538079095 0.45392229317019 0.453934783125674 16.0689618431475 16.0685965496123 2443198.753599511 0.253210169716542 443.528941512834 15.9996856974536 39.4174663157238 2216331.47942744 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1996-May-27 17:14 < 00:01 Earth 0.379293885521203 0.379291860429088 0.379295910612974 22.819764068969 22.8194562266694 2450231.218342938 0.0691442065934915 99.2153392430108 20.6618851661891 -5.41508856790732 561982.97297312 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1998-Jan-03 03:01 < 00:01 Earth 0.488795057442476 0.488794974715863 0.488795140166294 9.33258211872691 9.33199800512155 2450816.625743695 0.236765027218484 113.608987030535 24.1950083908647 77.5582203177479 1896776.36558119 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
1998-Apr-20 10:54 < 00:01 Earth 0.143809490182913 0.143807520146978 0.143811460225348 14.6822663408833 14.6810043669724 2450923.954175351 0.0887724560416228 85.7760843790953 29.9811079394358 27.967058517419 320752.912224187 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2019-May-16 09:49 < 00:01 Earth 0.18682872835852 0.186821021661926 0.186836435061271 18.6664642961936 18.6657002572012 2458619.909337338 0.211180886549431 359.456069237315 22.3687651931599 -15.8206829985159 299186.001580289 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2021-Mar-28 03:07 < 00:01 Earth 0.325185119543138 0.32517791621346 0.325192322885934 15.2475234727241 15.2469860821614 2459301.629924870 0.362590052263004 347.686983720424 22.8964490476185 22.0143642320539 651200.703837962 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2042-May-03 07:22 < 00:01 Earth 0.0292089385621748 0.0292070306639306 0.0292108522445613 15.8226772948675 15.8169110145195 2467007.807030531 0.494921043275367 559.841074123972 22.7052896139326 -81.9192004406031 155539.361083017 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2044-Feb-20 13:42 < 00:01 Earth 0.467388910222876 0.467373626928884 0.467404194369122 16.2226220930721 16.2222706802484 2467666.070787148 0.774697637394732 1086.89029405336 17.3930612620138 36.9235815568564 1990745.62537845 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2063-May-29 22:23 00:02 Earth 0.403014101740556 0.402901048512494 0.403127155217015 23.3387856221889 23.3385023418098 2474704.432652697 2.36863746790702 5608.23537524744 18.9201521236944 -11.6291153607141 579393.760963093 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2065-Apr-22 23:38 00:05 Earth 0.11585391108452 0.11573712010062 0.115970721502636 14.8250908865718 14.8235394750333 2475398.484612965 5.22367755690022 4878.97581151709 22.59748240954 20.1602311924523 211044.630737039 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2086-May-19 12:49 00:04 Earth 0.237924893584625 0.237763497294678 0.238086288173972 19.6671853511911 19.6666159261663 2483095.033735656 4.34296005402847 7637.40090094811 20.4069662559627 -12.6866857054869 332989.940618958 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2088-Apr-04 11:08 00:07 Earth 0.275840441564394 0.275690138094706 0.275990753559189 14.9574264871165 14.9567806739184 2483780.963789889 7.09614010954807 6896.78859895385 20.8708853529667 22.577763009235 608466.486506372 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2109-May-08 12:49 00:06 Earth 0.0701210505657262 0.0699769196784621 0.0702652437931599 16.5986777660661 16.5963883728057 2491484.034191324 5.50213385437481 6796.42666538685 21.8499719693537 -26.0885107956435 175013.439809101 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2111-Mar-10 21:41 00:05 Earth 0.420494606672841 0.420379975634032 0.420609258205086 16.188729098642 16.1883376773721 2492155.403799047 5.35889513442297 6871.54336576718 17.0400103611633 31.8018677674262 1602139.23075963 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2130-Jun-05 10:02 < 00:01 Earth 0.498904769454625 0.49888893218752 0.498920606740356 25.6027586548959 25.6025500571035 2499181.918155950 0.317236378545006 801.626446770736 18.5984643078188 -10.7420981289261 690599.212866316 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2132-May-02 06:52 00:01 Earth 0.0317276074673666 0.0317140914127047 0.0317411518087229 15.6048318804203 15.5994492960499 2499878.786136506 1.26281047295484 1325.47515918337 22.8008366589292 66.0718147758176 154606.111698544 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2134-Feb-14 23:29 00:02 Earth 0.486046813156767 0.486004497058488 0.486089137073512 16.5053268785419 16.5049947436541 2500532.478813969 1.69142544162491 3181.76692045245 17.491422038243 39.5477625460326 2193402.03606486 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2153-May-26 10:27 00:08 Earth 0.334571038816005 0.33423082281226 0.33491125240933 21.7214700622053 21.7211034233713 2507572.935094952 7.97494084789317 16610.5409300513 19.5556434754904 -11.8428590000547 467039.30691744 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2155-Apr-17 12:08 00:16 Earth 0.184130908995571 0.183779264743326 0.184482634896051 14.6964011360345 14.6954164694242 2508264.005338131 16.0764253399562 14826.9893686376 22.160074690508 19.3572919450708 328033.739748683 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2176-May-13 19:28 00:19 Earth 0.144363457822946 0.143776910538094 0.144950046287429 17.832758973416 17.8317239524559 2515961.311309157 18.673411865055 26863.435314101 21.2500388201788 -15.4605164189964 229460.379608971 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2178-Mar-24 12:21 00:24 Earth 0.358307964228008 0.357781503856181 0.358834607439582 15.6910735435283 15.6905996183349 2516641.014470506 23.9449458908437 27472.2226685163 18.6920638379298 27.0018737380871 1061192.44718506 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
2199-May-02 13:57 00:24 Earth 0.0348715170201142 0.0345342505559523 0.0352164266416659 15.5516334775322 15.5467194891774 2524350.080915267 23.6150577251516 24839.4409199076 22.3683194698071 56.7659213885962 158314.226228414 T 152 CATAB v2.0c-linF95 2015-Mar-09 14:31:25 2015-Mar-09 14:31
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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