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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 131 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4060454473716231 1.9619e-07  
a 1.541404105382148 2.2349e-08 AU
q .9155239858317975 3.135e-07 AU
i 24.52659942198224 1.1563e-05 deg
node 220.7580054737203 1.6335e-05 deg
peri 321.6974754846173 3.355e-05 deg
M 263.3386278042822 8.0456e-05 deg
tp 2457188.182443565003
(2015-Jun-14.68244357)
0.00015997 JED
period 698.9935912206545
1.91
1.5202e-05
4.162e-08
d
yr
n .5150261812434231 1.1201e-08 deg/d
Q 2.167284224932499 3.1424e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      8441 days (23.11 yr)  
   first obs. used      1991-10-10  
   last obs. used      2014-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5874  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-21 05:20:52  

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 0.428496968927734 0.428494466702949 0.428499471154113 24.0427609248535 24.0425022926496 2418092.017371119 0.0295754124719561 127.412843942615 11.3548262689355 -21.0389834428062 1886979.9887364 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1910-Apr-24 00:34 < 00:01 Earth 0.107629663901206 0.107627360383403 0.107631967423884 14.8273795279048 14.8257098203117 2418785.523826837 0.105853702281046 93.7522750588936 31.8902765379915 16.2447460198502 173429.045726868 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1931-May-07 08:20 00:01 Earth 0.0620401654447024 0.0620119511118302 0.0620683830385686 16.480699071052 16.4780929287867 2426468.847453529 1.12221126515386 1347.67702019787 24.9454149572861 -27.9248917499451 144187.159724965 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1933-Mar-01 14:31 00:01 Earth 0.437295180216728 0.437271660169236 0.437318701741739 15.9501249483784 15.9497429348198 2427133.104894868 1.14346350791673 1556.4590358138 19.3889286753285 35.9801085117196 1624891.79682845 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1952-May-23 20:45 < 00:01 Earth 0.31610989004514 0.316086764375926 0.316133015687123 21.4052267938139 21.4048330094802 2434156.364705342 0.566512183036427 1123.19330328535 21.7236929342976 -11.0374878698375 371192.753800507 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1954-Apr-12 23:17 < 00:01 Earth 0.21215489168152 0.212133731149885 0.212176052506617 14.612045219447 14.6111856893806 2434845.470481451 0.991216602220101 909.727653182854 25.1739096450617 21.4373359519208 367063.134103473 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1975-May-04 23:15 < 00:01 Earth 0.0372123099941968 0.03720629800206 0.0372183232409185 16.0510419408409 16.0465804206874 2442537.468884798 0.348471958415332 379.340152853529 21.5380575356149 -48.7153247018689 159474.023846729 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1977-Feb-24 06:06 < 00:01 Earth 0.45392787509921 0.453921311762404 0.453934438589064 16.0689637137488 16.0685984197226 2443198.753922326 0.272694641865409 466.741176319697 16.4447168350557 39.4180161245952 2156279.07163547 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1996-May-27 17:14 < 00:01 Earth 0.379293746084276 0.379291690994048 0.379295801174158 22.8197627252379 22.8194548828071 2450231.218316813 0.0719968480533168 100.632682153404 23.3007566997081 -6.18009127513878 555958.932361962 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1998-Jan-03 03:01 < 00:01 Earth 0.48879497252721 0.488794891275571 0.488795053775956 9.33258727459595 9.33200316121183 2450816.625725902 0.243606533934384 114.883668387954 25.0388092780508 77.6597177761208 1833629.52857307 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
1998-Apr-20 10:54 < 00:01 Earth 0.143809755496333 0.143807682818578 0.143811828180448 14.6822668504173 14.6810048788785 2450923.954146070 0.0957343884140939 90.1238719470887 30.949128347879 27.089110590632 303544.278932379 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2019-May-16 09:49 < 00:01 Earth 0.186827237156546 0.186818631991828 0.186835842328341 18.6664378682712 18.6656738220986 2458619.909223529 0.245154407693555 401.110453270619 23.4993904687918 -15.6839643255941 281753.383880858 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2021-Mar-28 03:07 < 00:01 Earth 0.325186579993859 0.325178493940004 0.325194666067195 15.2475357347327 15.2469983470157 2459301.629700632 0.402168708830458 392.749206344114 25.2872872286224 22.697684240662 606153.248885671 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2042-May-03 07:22 < 00:01 Earth 0.0292084696771479 0.0292063090836319 0.0292106373539305 15.822651051761 15.8168846692624 2467007.806833649 0.553114352321014 617.112254902756 24.3765118372613 -81.6736496097931 144783.748364156 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2044-Feb-20 13:40 < 00:01 Earth 0.467391791204653 0.467374824882776 0.467408758573382 16.2226119960475 16.2222605851712 2467666.069385746 0.847940217496821 1206.11314637793 18.0256720468505 36.9635034140529 1922616.02145936 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2063-May-29 22:21 00:03 Earth 0.402994574991223 0.402870300279447 0.403118850005271 23.3383255150491 23.3380422153587 2474704.431469984 2.611887302016 6165.10615165484 20.1574293940266 -11.6334216786257 543996.02564305 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2065-Apr-22 23:35 00:06 Earth 0.115874092273592 0.115745703210145 0.116002504886903 14.8249930134709 14.8234418619063 2475398.482642792 5.74763279545945 5364.99148954167 24.8611795622418 20.1982402774138 192208.331147894 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2086-May-19 12:46 00:05 Earth 0.237897030391408 0.237719608691294 0.238074450031066 19.6666148316191 19.6660453233794 2483095.031918400 4.78304568383404 8395.51819477763 21.5846292993472 -12.6827134165263 314684.127700833 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2088-Apr-04 11:03 00:08 Earth 0.27586645161624 0.275701186559915 0.276031727036159 14.9575800829342 14.9569343372592 2483780.960220451 7.80040848486991 7585.80043873849 23.6349663618302 22.610942494613 538109.195330393 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2109-May-08 12:46 00:06 Earth 0.0700961507374044 0.069937703981252 0.0702546728044038 16.5982829181999 16.5959926571482 2491484.032174970 6.05665300253199 7470.95820950176 23.334166438245 -26.080401494357 163774.394413537 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2111-Mar-10 21:34 00:06 Earth 0.420514497655017 0.420388404302426 0.420640615846529 16.1888917384604 16.1885003396378 2492155.398633493 5.885986621272 7560.72204743424 18.6558955789707 31.8233375381202 1464327.84251112 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2130-Jun-05 10:02 < 00:01 Earth 0.498907751484213 0.49889019024161 0.498925312749082 25.6028352361639 25.6026266402423 2499181.918313098 0.344214513544709 888.478906747622 19.980280853152 -10.6827358468164 639094.660815848 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2132-May-02 06:53 00:01 Earth 0.0317250431830688 0.0317100675641241 0.0317400532034522 15.6048950383436 15.5995120406267 2499878.786593640 1.38691395966689 1462.75729324064 24.571057935271 65.9654963823017 143337.364185905 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2134-Feb-14 23:35 00:02 Earth 0.486039537013625 0.485993041392396 0.486086042096558 16.5053214892134 16.5049893492449 2500532.482923680 1.8697040757558 3497.67572807947 17.9012033971924 39.5485561072768 2143189.58065237 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2153-May-26 10:32 00:09 Earth 0.33463042262167 0.334255786655415 0.335005055669524 21.7228096606683 21.722443109505 2507572.938734966 8.77257165917275 18291.2497235691 20.7410471840905 -11.8426401105863 440422.162121081 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2155-Apr-17 12:17 00:18 Earth 0.184069579574213 0.183682390424014 0.184456867634832 14.6963908156967 14.6954058203065 2508264.012000099 17.6992712271034 16323.6505169367 24.7526864947436 19.3417073149678 293349.88103817 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2176-May-13 19:39 00:21 Earth 0.144465551109714 0.143819792867117 0.145111359071021 17.8345880864571 17.8335539030466 2515961.318465430 20.5462770023574 29576.580262603 22.5442078493924 -15.4574119035867 216404.886584139 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2178-Mar-24 12:44 00:26 Earth 0.358216415734315 0.357636835690244 0.358796216938876 15.6901809152253 15.6897068419405 2516641.030693802 26.368044683867 30237.409180519 21.1518926278862 26.989071658958 937113.839763939 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
2199-May-02 14:09 00:26 Earth 0.034812224981025 0.0344425400374243 0.0351912230245371 15.5527153107335 15.5477932940722 2524350.089410568 25.997545536801 27356.8710335239 24.204635186971 56.8968355535797 146276.486426684 T 131 CATAB v2.0c-linF95 2014-Nov-21 05:20:55 2014-Nov-21 05:20
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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