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159399 (1998 UL1)
Classification: Amor [NEO]          SPK-ID: 2159399
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 219 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2139594478752863 5.7793e-08  
a 1.526879786334227 4.9403e-09 au
q 1.200189430278221 8.9752e-08 au
i 41.96656288400249 8.4074e-06 deg
node 214.8671331149089 4.9996e-06 deg
peri 353.2103385695056 1.4153e-05 deg
M 333.4621364181065 2.0898e-05 deg
tp 2459051.300636286743
(2020-Jul-20.80063629)
4.021e-05 TDB
period 689.1372022767323
1.89
3.3446e-06
9.157e-09
d
yr
n .5223923462710364 2.5353e-09 deg/d
Q 1.853570142390233 5.9973e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1095  
   data-arc span      7767 days (21.26 yr)  
   first obs. used      1998-09-28  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46015  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-04 05:16:31  

Additional Information
 Earth MOID = .195439 au 
 Jupiter MOID = 3.11951 au 
 T_jup = 4.195 
[ 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 16.5   n/a MPO436805  
rotation period rot_per 4.01 h n/a LCDB (Rev. 2019-August); 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. (2016) Minor Planet Bull. 43, 143-154.]

159399 (1998 UL1)          Discovered 1998-Oct-18 by LINEAR at Socorro
Reference: 20070630/Numbers.arcLast Updated: 2007-07-05

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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
1907-Apr-28 19:13 < 00:01 Earth 0.309039270294644 0.3090322071895 0.309046333511073 22.063776116587 22.0633853452589 2417694.300944502 0.213174159563929 458.018723641986 17.2399216257139 39.7708830872408 1685395.16688541 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
1909-Apr-18 23:56 < 00:01 Earth 0.453346560607974 0.453338557343008 0.453354563927804 23.0218104633494 23.0215551667879 2418415.497022928 0.159490863968178 471.042649049196 43.4750184016869 -32.2404414507575 812718.026606188 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
1924-Apr-26 14:58 < 00:01 Earth 0.241568414335024 0.241564085537401 0.241572743288665 21.6048718773012 21.6043613421559 2423902.123331521 0.166848185575755 375.271748231744 15.9234317374776 54.9586714025367 1843701.94674194 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
1941-Apr-25 13:21 < 00:01 Earth 0.20163771095068 0.201636347138041 0.201639074916276 21.3719309437352 21.371312638223 2430110.056359295 0.121857969469562 290.998976713315 13.9307653678763 76.7603744291241 2122483.68857603 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
1958-Apr-24 12:02 < 00:01 Earth 0.199231001042282 0.199230045749503 0.199231956428176 21.3297799043178 21.3291528929007 2436318.001235600 0.085147433970265 225.59268503247 10.791724813849 -78.1167434123271 2845741.53681061 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
1975-Apr-23 10:16 < 00:01 Earth 0.238752063867952 0.238750426820211 0.238753700989575 21.49422118982 21.4937019729988 2442525.927762652 0.0553062085294378 226.51702033299 10.7776169696783 -69.0445999687706 3502448.33055159 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
1990-May-01 12:11 < 00:01 Earth 0.455024971415594 0.455023625619796 0.455026317212685 23.3354123673883 23.3351614308047 2448013.007517634 0.0571346333479611 78.0506261196125 18.3637283397261 31.692046174649 2011586.74395201 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
1992-Apr-21 07:50 < 00:01 Earth 0.309277316450227 0.309276199515248 0.309278433535115 21.9076888697203 21.907295617103 2448733.826459120 0.0320798932809965 393.963964999027 27.4046817655371 -82.9123207750923 1626032.7565331 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2007-Apr-30 03:01 < 00:01 Earth 0.360123393905765 0.360122908502302 0.360123879309352 22.4496815746599 22.4493519998389 2454220.625380476 0.0329087456344291 29.0992786262818 18.7238677046317 46.4773907218147 2437059.42663226 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2009-Apr-20 04:39 < 00:01 Earth 0.399748683001397 0.399748187221733 0.399749178781243 22.5831908487635 22.5828956987222 2454941.693419738 0.0315239266028874 63.0615821736626 24.0195078200707 -84.2384716238172 2404476.41673036 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2024-Apr-27 17:39 < 00:01 Earth 0.274005435806757 0.27400429515426 0.274006576462292 21.7948352600684 21.7943890863007 2460428.235738993 0.0389664806301979 74.2807596523966 17.3696642201208 41.4136396261701 1598320.87211397 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2026-Apr-19 02:11 < 00:01 Earth 0.497704624639107 0.497703133534721 0.497706115745248 23.4680971292013 23.4678690083864 2461149.591181881 0.0511318286799284 92.0129544406544 37.8851203586932 -40.2697341288662 1358449.78136442 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2041-Apr-26 08:31 < 00:01 Earth 0.211107308676848 0.211106114698535 0.211108502685352 21.4191814480317 21.4185921809351 2466635.854620019 0.0640303872332889 143.106182372662 15.0605396072499 66.1233550517887 1918433.69714633 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2058-Apr-25 00:53 < 00:01 Earth 0.198022669549384 0.198022049126838 0.198023290063691 21.330548936897 21.329918122153 2472843.536753884 0.0935742608465922 230.557341782513 11.3408978108613 -82.8187369293097 2692414.20882687 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2075-Apr-23 17:40 < 00:01 Earth 0.242452182448588 0.242448687601858 0.242455677709282 21.5258641901741 21.5253536489524 2479051.235932555 0.127993338782675 530.044870820594 10.9820400116959 -70.8388439739985 3516646.22117917 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2090-May-01 11:42 < 00:01 Earth 0.435906498710956 0.435899791383644 0.435913206060049 23.1140120271707 23.1137475755929 2484537.987730335 0.163501724059325 368.181316268411 18.939518992959 24.7458364480221 1406847.85870116 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2092-Apr-21 09:33 < 00:01 Earth 0.327804737077753 0.327798617118733 0.32781085792086 22.0439098104423 22.0435410773306 2485258.897911582 0.159651363297912 908.634730568316 38.7644262198377 -70.5204607696488 1155158.48201837 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2107-Apr-30 22:06 < 00:01 Earth 0.332319487983425 0.332312149661794 0.332326826383657 22.2038870489226 22.2035259459457 2490745.420964820 0.196192399884142 446.1037542554 17.8680913026133 34.918561775543 1562375.57674403 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2109-Apr-21 02:39 < 00:01 Earth 0.430964554519394 0.430956505018869 0.430972604101741 22.8730084985539 22.8727381960434 2491466.610194308 0.183597232890022 499.803576298108 42.3404059576525 -36.7255346264778 885465.710461694 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2124-Apr-28 09:15 < 00:01 Earth 0.244186702429898 0.244180496092168 0.244192909041184 21.592426131829 21.5919207798319 2496952.885338516 0.221215096802687 512.196382895574 16.2446557859193 52.8636841961848 1776434.78224265 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2141-Apr-26 23:04 < 00:01 Earth 0.19825453910689 0.198252802708709 0.198256276175673 21.3343719923987 21.3337420283492 2503160.460973821 0.242126723673968 588.437091640408 13.4372383563677 81.6377423004623 2207135.00651812 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2158-Apr-25 15:31 < 00:01 Earth 0.213872354479014 0.213867157260533 0.213877552767028 21.3969790881879 21.396396835968 2509368.146645499 0.275161572902526 797.966506907397 9.46448497549384 -71.0574659833967 3559960.62840613 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2173-May-03 11:06 < 00:01 Earth 0.490715327686548 0.490701536687194 0.490729118748581 23.6205719440644 23.620342067638 2514854.962545541 0.32993109701685 741.266499437487 19.3454825234789 21.9231471057958 1369843.63720476 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2175-Apr-24 07:54 < 00:01 Earth 0.281157052213867 0.281146166764931 0.281168165166413 21.7560025127093 21.7555669119553 2515575.829105259 0.312282543135055 12626.3619579097 11.2184384092349 -87.5108312430572 3709865.25161182 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2190-May-01 22:46 < 00:01 Earth 0.387626182096846 0.387611427085585 0.387640937284886 22.6322653085829 22.6319615880581 2521062.448517916 0.36842398826484 843.718995113409 18.488992243454 29.308710010209 1495481.99668465 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
2192-Apr-22 01:11 < 00:01 Earth 0.373560876450879 0.373546283603169 0.373575470014828 22.4043959522039 22.4040775905023 2521783.549544417 0.341222554468558 1094.23120427207 44.1454586048444 -48.3674866310277 916988.755888148 T 219 CATAB v2.0f-lin.ifort 2020-Jan-04 05:16:39 2020-Jan-04 05:16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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