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12538 (1998 OH)
Classification: Apollo [NEO, PHA]          SPK-ID: 2012538
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 429 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .40603685995943 9.9027e-09  
a 1.541841884103304 2.2847e-09 au
q .915797246928067 1.5238e-08 au
i 24.5243470835148 6.2704e-07 deg
node 220.7387962531187 2.1134e-06 deg
peri 321.7095844496109 3.0988e-06 deg
M 316.218506606649 2.4792e-06 deg
tp 2459285.544504685694
(2021-Mar-12.04450469)
4.9462e-06 TDB
period 699.2913972071004
1.91
1.5543e-06
4.255e-09
d
yr
n .5148068479575236 1.1443e-09 deg/d
Q 2.167886521278541 3.2124e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2398  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      10806 days (29.59 yr)  
   first obs. used      1991-10-10  
   last obs. used      2021-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-12 05:53:05  

Additional Information
 Earth MOID = .0297217 au 
 Jupiter MOID = 2.89754 au 
 T_jup = 4.280 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.91   n/a MPCxxxxx  
diameter diameter 1.663 km 0.329 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 2.575 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Vaduvescu, O.; Aznar, A.M.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
[Benishek, V. (2019) Minor Planet Bull. 46, 506-508.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
[Warner, B.D. (2019) Minor Planet Bull. 46, 157-160.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 423-438.]
geometric albedo albedo 0.232   0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
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 0.428496882430853 0.428496579987387 0.428497184874343 24.0427543569433 24.0424957246165 2418092.017377962 0.0236982128218389 16.1180482231846 2.09824045260975 -20.8455587656356 10678418.2574572 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1909-Dec-27 05:54 < 00:01 Earth 0.499997269449006 0.49999719819877 0.499997340699355 10.3682886884441 10.3677747058547 2418667.745818702 0.0362108443249446 14.1337789897081 2.08342015435459 -78.1218627119285 23389235.6734819 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1910-Apr-24 00:34 < 00:01 Earth 0.107629654046969 0.107629401465654 0.107629906628407 14.8273747936505 14.825705085371 2418785.523829994 0.0362477408333787 13.8409775901962 1.81292941836757 24.7220585376634 3798611.71453088 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1931-May-07 08:20 < 00:01 Earth 0.0620409979791734 0.062037020308876 0.0620449757401755 16.4807076652551 16.4781015593234 2426468.847530880 0.47303460936641 230.960360624721 3.23206951925173 -30.8212402476494 1437090.96775345 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1933-Mar-01 14:31 00:02 Earth 0.437294444760408 0.437291164705806 0.437297724826768 15.9501212750359 15.9497392607468 2427133.105123148 1.66788609346701 198.879060698413 3.27498985763207 34.6771701926268 11700453.0835256 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1952-May-23 20:45 < 00:01 Earth 0.316110670248185 0.316107271450622 0.316114069047617 21.405239543462 21.4048457603347 2434156.364765404 0.298936134349467 173.773730242874 3.37755069296816 -12.7623009816751 2884921.52922123 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1954-Apr-12 23:18 < 00:01 Earth 0.21215415093367 0.212151037435313 0.212157264479892 14.6120400220391 14.6111804886656 2434845.470565133 0.523801918137016 222.182403535401 1.83385926942349 45.6721657999822 11127968.8425485 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1975-May-04 23:15 < 00:01 Earth 0.0372125624391078 0.0372116416697093 0.0372134832484452 16.0510423785478 16.0465808887857 2442537.468924615 0.160662267345424 76.3015243133147 3.09038546809957 -53.0668080372252 1417877.36101566 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1977-Feb-24 06:06 < 00:01 Earth 0.453927516348113 0.453926496531788 0.45392853616547 16.0689625435994 16.0685972492578 2443198.754041038 0.619440743390818 61.1477433587866 3.20509020773962 33.7828546460332 13038149.1956979 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1996-May-27 17:14 < 00:01 Earth 0.379294333982471 0.37929350977881 0.379295158186196 22.8197717086915 22.8194638668589 2450231.218363699 0.0711830774065571 41.8581845026674 3.26377581904257 -10.9607272169793 3303780.60416128 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1998-Jan-03 03:01 < 00:01 Earth 0.488795080433973 0.488794803072525 0.488795357797311 9.33258096561469 9.33199685196452 2450816.625739261 0.204827159437367 50.7256334077866 2.21970090719737 -74.3813742731406 11765438.0961518 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
1998-Apr-20 10:54 < 00:01 Earth 0.143809160937243 0.143808419092824 0.143809902783698 14.6822641314609 14.6810021544705 2450923.954207907 0.106049666691282 45.7880719770422 2.05415348676906 36.149041940184 5912769.29048245 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2019-May-16 09:49 < 00:01 Earth 0.186827850700734 0.186827695692345 0.186828005709123 18.6664446494782 18.6656806060922 2458619.909274985 0.0160064684900482 7.88169017508144 3.39619408098737 -12.5154913267734 3692621.50227498 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2021-Mar-28 03:07 < 00:01 Earth 0.325186013206762 0.325185817369965 0.325186209043707 15.2475281607789 15.2469907718582 2459301.629782117 0.045722277341431 14.7167765555872 2.39741156732312 49.3101340284161 13761348.2130005 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2042-May-03 07:22 < 00:01 Earth 0.0292085193979854 0.0292083398516778 0.0292086989785237 15.8226504821603 15.8168841092706 2467007.806870519 0.11856150640942 53.7586246649371 3.03458240332548 -80.9707353532631 1405524.43258074 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2044-Feb-20 13:40 < 00:01 Earth 0.467391325639137 0.467390084465704 0.467392566813924 16.2226130319534 16.2222616207495 2467666.069586722 0.893726524876045 73.5455828202193 3.18439712630421 32.7299264001561 13886614.2692099 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2063-May-29 22:22 < 00:01 Earth 0.402997386890145 0.402988398775785 0.403006375013669 23.3383874198929 23.3381041229307 2474704.431650839 0.772804116720579 458.351193477335 3.29208938445448 -12.0832546777743 3548870.130263 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2065-Apr-22 23:35 00:01 Earth 0.115871179290382 0.11586188984286 0.11588046903678 14.8250026466324 14.8234514570778 2475398.482929218 1.30546731124985 548.371692279041 2.24972919432544 32.3548789438946 4017291.67714999 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2086-May-19 12:46 00:01 Earth 0.237901037512457 0.237888143963956 0.237913931107585 19.6666922612918 19.666122764887 2483095.032188598 1.20143769307658 664.055570858809 3.38549864972647 -14.487367554767 2467269.15088315 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2088-Apr-04 11:03 00:02 Earth 0.275862695453412 0.275850675146756 0.275874716445153 14.9575545322328 14.9569087766619 2483780.960730110 2.38511242015825 910.642667264891 2.05572135746242 48.8348762974033 13218282.9749681 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2109-May-08 12:47 00:01 Earth 0.0700997455549071 0.0700881816579701 0.0701113100102812 16.5983352292187 16.5960450928412 2491484.032473957 1.34429444756435 655.662461134926 3.21113641438627 -28.4195805810391 1514622.00142204 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2111-Mar-10 21:35 00:03 Earth 0.42051158749198 0.420502367734897 0.42052080735517 16.1888658948456 16.1884744926895 2492155.399371065 3.46955374043131 567.739081773972 3.28958277673444 35.9251916883532 10533551.1224138 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2130-Jun-05 10:02 < 00:01 Earth 0.498907423919479 0.498906144537883 0.498908703301217 25.6028225383349 25.6026139421729 2499181.918306606 0.108558999146352 65.0202913193362 3.23658051905091 -11.1453087324437 4248077.45526523 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2132-May-02 06:53 < 00:01 Earth 0.0317253378502499 0.0317242226472932 0.0317264532450371 15.6048823748076 15.5994994227262 2499878.786543003 0.297278696312762 135.18060143911 2.93515109760708 65.7352547006004 1461535.55015648 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2134-Feb-14 23:35 00:03 Earth 0.486040454186726 0.486037129500991 0.486043778884727 16.5053235868548 16.5049914475553 2500532.482393452 2.68403719319423 205.734398323654 2.73929109218288 36.3123497120343 18581962.8304086 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2153-May-26 10:31 00:02 Earth 0.334622482765542 0.334595350008671 0.334649615637832 21.7226260614261 21.722259498467 2507572.938258515 2.40579760668754 1388.04447235351 3.36466194790365 -12.9044692774671 3084312.48698429 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2155-Apr-17 12:16 00:04 Earth 0.184077769993589 0.184049729137239 0.184105814389726 14.69638806046 14.6954031087132 2508264.011110935 4.38294935592663 1890.98588358372 1.83455678879129 42.3117277376666 9285569.99018967 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2176-May-13 19:37 00:05 Earth 0.14445181850133 0.14440506643145 0.14449857220801 17.8343372911528 17.8333029948771 2515961.317512271 4.72594801697664 2454.23930486027 3.344008064012 -18.2090170041783 1929472.17946774 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2178-Mar-24 12:41 00:11 Earth 0.358228712333858 0.358186759115129 0.358270670076887 15.6902981384171 15.6898240849473 2516641.028504427 10.6899349744278 2899.54570590433 2.71121840228443 43.8187119490267 12056621.7614489 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
2199-May-02 14:07 00:06 Earth 0.0348202335705428 0.0347931214228483 0.034847398574308 15.552563825441 15.5476428930671 2524350.088265470 5.615741224851 2531.67585778547 2.87973689992696 57.686135433464 1516524.46996082 T 429 CATAB v2.0g-lin.ifort 2021-May-12 05:53:33 2021-May-12 05:53
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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