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(2015 HL171)
Classification: Apollo [NEO]          SPK-ID: 3718432
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2457141.5 (2015-Apr-29.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2564032079502649 0.00066057  
a 1.290890410002813 0.0011654 au
q .9599019677658589 1.3873e-05 au
i 27.22873764841156 0.034196 deg
node 39.96169850521409 0.0012307 deg
peri 226.3056341524818 0.046949 deg
M 330.4461082887074 0.074675 deg
tp 2457185.478930670589
(2015-Jun-11.97893067)		 0.051569 TDB
period 535.7133739297848
1.47		 0.72543
0.001986		 d
yr
n .6720011437444247 0.00090999 deg/d
Q 1.621878852239767 0.0014642 au
   Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      5 days  
   first obs. used      2015-04-28  
   last obs. used      2015-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .32351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Sep-11 07:34:36  

Additional Information
 Earth MOID = .0161481 au 
 Jupiter MOID = 3.4766 au 
 T_jup = 4.887 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.2   n/a MPO346332  

[ 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
1905-Sep-30 07:09 5_06:53 Earth 0.419231205043583 0.401067437458779 0.50769092090693 15.4307285568099 15.4303166697767 2417118.798152960 7613.4381422052 9436294.26486534 514.505681770795 73.0770513709971 81713.5282781068 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1908-Apr-26 04:04 8_22:08 Earth 0.0941248679384299 0.0185638003951695 0.289826165719427 16.7752757058396 16.7735881422158 2418057.669145578 12847.8134454683 9821381.85720826 147.459238774566 11.3819718285722 17573.729109384 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1908-Oct-14 03:04 7_07:53 Earth 0.406425242124136 0.39968679635412 0.475826581312464 14.2286311527133 14.2281703918385 2418228.627504750 10552.9949151103 9200581.02835433 232.99158048149 -79.5555785873436 142174.544409555 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1911-Apr-08 16:38 7_17:59 Earth 0.495677076524041 0.319453524397942 0.671938891900233 24.6998448591594 24.6996272279327 2419135.193240891 11159.3132553107 8791192.8735337 309.778716231338 1.34330349485483 5162.59569030233 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1911-Oct-14 07:46 1_19:09 Mars 0.0963866462211114 0.0265075754818268 0.240957693909563 11.8528643815447 11.8526137875881 2419323.823939872 2588.76357831108 7321615.29984035 204.595936224845 15.9658154533543 18962.2915612333 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1927-May-20 15:31 6_06:16 Earth 0.368123278448842 0.334569853244765 0.511101848925415 15.5227950189027 15.5223287293598 2425021.146820195 9015.61591346125 11610723.0679616 421.9263788498 -65.3503998521634 81990.4057370875 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1927-Sep-29 09:17 2_00:42 Earth 0.438389892942174 0.411691718113031 0.48280754168873 16.0257500349289 16.0253707735686 2425152.886826869 2922.20623037584 4759804.04229338 576.656267520441 67.6641145390119 76762.900578847 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1930-Apr-29 08:41 3_18:04 Earth 0.0392530406291123 0.0156346484601381 0.120171977782554 16.0376477540163 16.0334146815689 2426095.861780793 5403.70891986705 4146260.52028732 80.1701331527444 23.4852283878111 26527.0913859115 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1930-Oct-12 18:12 2_15:30 Earth 0.396314295549035 0.391296015533205 0.414562623144089 14.2405501858525 14.2400780651452 2426262.258449355 3809.87863038936 3693692.45187454 295.902607374645 -80.8753125089928 119548.170729295 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1933-Apr-10 00:37 1_07:53 Earth 0.457035106762086 0.423830098804135 0.490240520842407 23.8082986795298 23.8080538089178 2427172.525920299 1912.61431187163 1655948.98866447 287.240884449492 0.777390420306777 2979.7552269703 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
1949-Sep-30 19:13 6_21:27 Earth 0.416461774846425 0.399558027852481 0.533012635992387 15.4695335740824 15.4691199881129 2433190.300544756 9926.97700396122 11736458.5032667 540.598713399331 73.6251530673148 79262.5658359725 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2011-Jun-20 18:00 1_11:45 Mars 0.0962147082947316 0.0306110437812542 0.179824775270256 11.882647205138 11.8823967925871 2455733.250040563 2144.80098106601 4283758.48087865 286.861457311369 18.2425572125251 15397.4449217601 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2012-May-24 13:26 5_08:33 Earth 0.43632855598484 0.403803187615 0.539244402143015 16.2705595890277 16.2701842694325 2456072.059926912 7712.92406890408 9579218.17271818 911.55441430825 -67.741146030942 51755.2601882057 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2012-Sep-28 02:48 21:47 Earth 0.461303038233857 0.43607752118096 0.496066742191382 16.8514014991972 16.8510587358048 2456198.616706992 1306.59137906842 3637995.69904965 645.038465716598 65.4572889021055 74958.0117679916 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2015-May-02 05:56 < 00:01 Earth 0.0227339515443075 0.0226381869355095 0.022829715364696 15.4847284296193 15.4771576602926 2457144.747364213 0.108462968495267 4770.70306063747 27.5213881673336 0.125701366891794 530.264393989508 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2015-Oct-11 09:24 06:27 Earth 0.389759251279292 0.386132966030953 0.393404578475197 14.2758837635549 14.2754048907158 2457306.891329673 387.439602076482 226554.292279657 522.514900212842 36.8445849035378 62352.1360089429 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2018-Apr-13 22:43 3_06:03 Earth 0.381103345422865 0.308455991408866 0.453807514948887 22.1400926750044 22.1397768887236 2458222.446312173 4683.20370825508 3631467.56469441 268.411646810587 3.60576311663326 12276.2938360604 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2018-Oct-26 08:10 3_05:19 Earth 0.481636182886968 0.465921835806849 0.50549628783323 14.4264967974038 14.4261133214473 2458417.840539851 4639.44614311702 3281891.75942077 95.8319266369755 -72.3504500309127 297359.332083049 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
2128-Oct-20 13:03 5_12:55 Earth 0.425712467784353 0.332509198365731 0.561714528642625 14.263145135535 14.2627063145715 2498589.043457548 7975.17265214253 8894084.35430598 597.693104482045 -47.558946569956 64965.7769762769 T 7 CATAB v2.0f-lin.ifort 2020-Sep-11 07:34:55 2020-Sep-11 07:35
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