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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 144 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4060454525659525 1.9066e-07  
a 1.541404112273402 2.0586e-08 AU
q .9155239819183285 3.0445e-07 AU
i 24.52659877409275 1.0316e-05 deg
node 220.7580051328208 1.3454e-05 deg
peri 321.6974852476598 3.2158e-05 deg
M 263.3385990422399 7.0538e-05 deg
tp 2457188.182500669416
(2015-Jun-14.68250067)
0.00014037 JED
period 698.9935959082076
1.91
1.4003e-05
3.834e-08
d
yr
n .5150261777895824 1.0318e-08 deg/d
Q 2.167284242628476 2.8945e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      650  
   data-arc span      8493 days (23.25 yr)  
   first obs. used      1991-10-10  
   last obs. used      2015-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56172  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-22 05:19:08  

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  
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 0.428496873282432 0.428494423454726 0.428499323111616 24.0427577665074 24.0424991342119 2418092.017371368 0.0256205053641392 124.535295121514 9.27505290391117 -20.6977383923648 2258218.33866154 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1909-Dec-27 05:54 < 00:01 Earth 0.499997233434347 0.499996426404645 0.499998040491472 10.3682936443442 10.3677796619635 2418667.745804502 0.275676584204654 143.294084244265 12.2671097790539 80.1125871676876 4091865.00719113 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1910-Apr-24 00:34 < 00:01 Earth 0.107630058256209 0.107628002366381 0.107632114149159 14.8273773655512 14.8257076638326 2418785.523789260 0.0973338748166959 83.6548536726628 31.1544353089837 15.5667406428536 184975.543510176 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1931-May-07 08:20 00:01 Earth 0.0620368637004583 0.0620109919266619 0.0620627381958443 16.480644684453 16.4780383948697 2426468.847180468 1.03484218717998 1234.82220112795 23.5461980594721 -27.8465346305751 152358.47689547 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1933-Mar-01 14:30 00:01 Earth 0.437297876229807 0.437276223243586 0.437319530470636 15.9501311301055 15.9497491190501 2427133.103936715 1.04430180160451 1433.53765139603 18.3908471329228 36.0323521270155 1715251.88969091 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1952-May-23 20:45 < 00:01 Earth 0.316107266390051 0.316085976009257 0.316128556748094 21.4051673221108 21.4047735334146 2434156.364550204 0.528260765892861 1034.09950309549 20.4643454248108 -11.0382062611429 394147.148767811 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1954-Apr-12 23:17 < 00:01 Earth 0.212157257157755 0.212137740031155 0.212176774539167 14.6120493638112 14.6111898435723 2434845.470200632 0.914968018417643 840.658701914484 22.8349508165095 21.6572109965503 408561.825177044 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1975-May-04 23:15 < 00:01 Earth 0.0372118306572253 0.0372061492820684 0.0372175131334425 16.0510311806379 16.0465696000144 2442537.468823506 0.332524310846805 356.683895637172 19.9961336111148 -48.4690696452133 171116.2545994 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1977-Feb-24 06:05 < 00:01 Earth 0.453928380431857 0.453922119070542 0.453934641931654 16.0689643026998 16.0685990090936 2443198.753704831 0.254283204093452 444.772013458014 15.9749251417978 39.4226715061284 2219992.17472763 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1996-May-27 17:14 < 00:01 Earth 0.379293790131325 0.37929176371894 0.379295816543366 22.8197631255892 22.8194552831995 2450231.218324415 0.0692169013794554 99.2765593580106 20.7968114218301 -5.46150642677167 561853.833597375 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1998-Jan-03 03:01 < 00:01 Earth 0.488795038566555 0.488794958908224 0.48879511821602 9.33258453507368 9.33200042159701 2450816.625735550 0.237217631463979 113.628397232969 24.1679322167866 77.5664235022381 1898953.34488569 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
1998-Apr-20 10:54 < 00:01 Earth 0.143809630775489 0.143807655734429 0.143811605822827 14.6822674410789 14.6810054684964 2450923.954157683 0.0890991553104056 85.9688223448148 30.0205540696012 27.8848089772949 319710.977255953 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2019-May-16 09:49 < 00:01 Earth 0.186828188573703 0.186820433702473 0.186835943451301 18.6664555306111 18.6656914890524 2458619.909290865 0.212995789379349 361.69056769074 22.3890162887059 -15.8161765132278 298763.00048647 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2021-Mar-28 03:07 < 00:01 Earth 0.325185657091136 0.32517840630688 0.325192907888804 15.2475290051493 15.2469916156699 2459301.629846709 0.364662965152247 350.105498869632 22.9772756433117 22.0490729363674 649797.559270185 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2042-May-03 07:22 < 00:01 Earth 0.029208771101615 0.0292068507483517 0.0292106973075087 15.8226693101592 15.8169029938348 2467007.806958475 0.498032784861767 562.910808622795 22.742127985314 -81.9080520253462 155282.182840811 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2044-Feb-20 13:41 < 00:01 Earth 0.467389929400931 0.467374555322208 0.46740530434171 16.2226205338164 16.2222691217253 2467666.070320340 0.778580606125045 1093.27722652496 17.3660127755357 36.9231511171064 1993824.02665468 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2063-May-29 22:22 00:02 Earth 0.403007443876826 0.40289378531348 0.403121102691314 23.3386293044951 23.3383460175387 2474704.432243728 2.38177567258216 5638.26654766002 18.9593334470704 -11.6295281287833 578205.848989968 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2065-Apr-22 23:37 00:05 Earth 0.115860794488759 0.115743377589989 0.115978231031531 14.8250585727756 14.823507250031 2475398.483938043 5.25193918026196 4905.18985744825 22.6624726852369 20.1618480534256 210467.872590784 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2086-May-19 12:48 00:04 Earth 0.23791540033912 0.237753135280123 0.238077663679018 19.6669917348135 19.6664222814611 2483095.033111103 4.36686986193695 7678.47675373966 20.4326110650423 -12.6866813611177 332557.625263374 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2088-Apr-04 11:06 00:07 Earth 0.275849313075167 0.275698198741991 0.276000436028016 14.9574798684226 14.9568340782997 2483780.962573819 7.13426464518492 6934.19662197423 20.9670090312542 22.5798517975544 605750.322706426 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2109-May-08 12:48 00:06 Earth 0.0701125700226926 0.0699676635102607 0.0702575395699075 16.5985443029157 16.5962546143072 2491484.033499761 5.53234777461506 6833.08515955362 21.8807482006922 -26.0904745029812 174757.889914611 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2111-Mar-10 21:39 00:05 Earth 0.420501402013872 0.420386149274085 0.420616675473304 16.188785984624 16.188394571055 2492155.402048024 5.38741690927443 6909.0018506952 17.0779091105934 31.803279326895 1598674.90648694 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2130-Jun-05 10:02 < 00:01 Earth 0.498905799524436 0.498889856634231 0.498921742433486 25.6027855629734 25.602576965831 2499181.918204109 0.318925979857406 806.951082027667 18.6501427188479 -10.7379625754617 688390.063442545 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2132-May-02 06:52 00:01 Earth 0.0317267221314011 0.03171312271794 0.0317403501745732 15.6048545687005 15.5994718419316 2499878.786288917 1.2700883647045 1333.49225436894 22.8417087869757 66.0685368763315 154321.265892946 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2134-Feb-14 23:32 00:02 Earth 0.486044360612982 0.486001802453816 0.486086926681667 16.505326950272 16.5049948137097 2500532.480236292 1.70180651646955 3200.08274124195 17.4447338868312 39.548384667589 2199289.35219637 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2153-May-26 10:28 00:08 Earth 0.334591306064358 0.334249115110561 0.334933494581332 21.7219278974209 21.7215612885228 2507572.936331409 8.02053299848377 16707.0556170783 19.5877587240573 -11.8427321158464 466298.894290639 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2155-Apr-17 12:11 00:16 Earth 0.184109984930654 0.18375629976055 0.184463752710259 14.6963986400848 14.6954138613964 2508264.007609901 16.1695549900245 14912.7944427719 22.2436336519559 19.3561327682945 326745.436085367 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2176-May-13 19:32 00:19 Earth 0.144398290012847 0.143808348768775 0.1449882728364 17.8333839022832 17.8323491672645 2515961.313745317 18.7797976675595 27019.1439888094 21.2753838230431 -15.4586161957324 229217.121287496 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2178-Mar-24 12:29 00:24 Earth 0.35827674681693 0.357747229388923 0.358806449137809 15.6907701340734 15.69029615842 2516641.020009221 24.0846126702166 27630.0948632858 18.7777774575402 26.9995527363829 1056165.58563074 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
2199-May-02 14:01 00:24 Earth 0.0348512656386537 0.0345124504329362 0.0351978272315763 15.5520034034892 15.5470866762523 2524350.083808787 23.7534430599473 24986.7939965695 22.413277732453 56.8122975432545 157989.886454358 T 144 CATAB v2.0c-linF95 2015-Jan-22 05:19:13 2015-Jan-22 05:19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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