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JPL Small-Body Database Browser
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85938 (1999 DJ4)
Classification: Apollo [NEO, PHA]          SPK-ID: 2085938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 119 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4835890689184552 2.8668e-08  
a 1.853048805398087 3.6708e-09 au
q .9569346589351703 5.3197e-08 au
i 9.144255046335418 5.1804e-06 deg
node 19.90873089845081 2.4305e-05 deg
peri 197.6572196531074 2.4584e-05 deg
M 340.7924877708643 7.8668e-06 deg
tp 2458649.658353838579
(2019-Jun-15.15835384)
2.0275e-05 TDB
period 921.3586419090761
2.52
2.7377e-06
7.495e-09
d
yr
n .3907273276930163 1.161e-09 deg/d
Q 2.749162951861003 5.4459e-09 au
  Orbit Determination Parameters
   # obs. used (total)      627  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      7395 days (20.25 yr)  
   first obs. used      1999-02-24  
   last obs. used      2019-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49445  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jun-01 06:34:52  

Additional Information
 Earth MOID = .0229298 au 
 Jupiter MOID = 2.23683 au 
 T_jup = 3.839 
[ 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 18.6   n/a MPO186590  
rotation period rot_per 2.5141 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; et al. (2004) IAUC 8316. (1999 DJ4)]
[Pravec, P.; et al. (2006) Icarus 181, 63-93.]
SMASSII spectral type spec_B Sq   n/a Binzel et al. (2001) Icarus 151, 139-149  

85938 (1999 DJ4)          Discovered 1999-Feb-24 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
1931-Feb-20 22:13 00:01 Earth 0.486842974725588 0.486827672816576 0.486858276641325 23.3614672551969 23.3612329804318 2426393.425812159 1.18002771854475 768.349804681079 9.01649391580913 -6.74340462049859 854689.669350265 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
1936-Mar-07 15:51 < 00:01 Earth 0.228809187892678 0.228800096079192 0.228818279723462 15.8153500589607 15.8146137328554 2428235.160565859 0.94521735472968 464.100658076155 8.57688219844115 -12.3558974393662 754665.84706573 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
1941-Apr-03 23:56 < 00:01 Earth 0.0263239031331979 0.0263237188454072 0.0263240874674125 9.74821929617903 9.7378304273711 2430088.496975624 0.641239114962145 106.519625639068 7.85205415159399 87.4174197882757 499859.793443262 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
1946-May-22 09:49 < 00:01 Earth 0.114438999864615 0.11443803106454 0.11443996870914 9.66188974481842 9.65947967072345 2431962.909119794 0.730838865946871 126.666094984057 13.4186612626466 68.382582272936 1081660.51149193 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
1951-Jun-23 00:31 < 00:01 Earth 0.265481654456136 0.265479651490801 0.265483657428458 15.3410295770235 15.3403753438004 2433820.521273561 0.261992315917158 121.332785835571 16.4604212039288 34.9682809104782 1219405.60520261 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
1994-Feb-26 12:00 < 00:01 Earth 0.382974756578833 0.382974186165528 0.382975326992159 20.4479112747357 20.4475710257265 2449410.000224893 0.0505243020882329 28.7816491453781 8.75578202230305 -9.23026996676507 1971479.28984599 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
1999-Mar-15 09:14 < 00:01 Earth 0.14436115026382 0.144360838023797 0.144361462503876 13.4544045077967 13.4530326165521 2451252.884420476 0.0474351490138186 16.1307875649441 8.45860305568355 -17.8915770839189 1324762.90662698 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2004-Apr-20 12:49 < 00:01 Earth 0.0586460139984479 0.0586459069870875 0.0586461210098084 9.0699534694779 9.06494288054303 2453116.034055063 0.061087425801168 10.1038345395375 5.33384698364338 -89.3446945646417 1421595.01575909 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2009-Jun-12 12:14 < 00:01 Earth 0.181241906673024 0.181241489599293 0.181242323747208 12.205951233874 12.2047467429478 2454995.009668728 0.0659225098986036 29.7608739033184 15.4706333879926 56.861955134399 1428989.5715867 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2014-Jul-04 18:03 < 00:01 Earth 0.409863373752433 0.409862669844451 0.409864077660602 20.0001546062588 19.9998295613093 2456843.252011284 0.071262030069779 38.5063817823193 17.43467746631 27.4626115971524 1928303.8541519 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2052-Feb-29 11:49 < 00:01 Earth 0.355425954221591 0.355423374978874 0.355428533464671 19.6031562641388 19.6027738433852 2470596.992591287 0.234363719919575 129.891940570971 8.81166765875644 -8.06330901332495 830389.651579994 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2057-Mar-22 00:32 < 00:01 Earth 0.0845545997232935 0.0845521855877497 0.0845570138692912 11.7179332636185 11.7152437488011 2472444.521959514 0.447199142889015 129.234113066876 8.45200502409899 -21.3893897865155 512276.047336545 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2062-May-04 23:42 < 00:01 Earth 0.0864512046183298 0.0864504109074495 0.0864519983525083 9.07609454240317 9.07269810539439 2474314.487305477 0.66955486649582 83.1782487380765 9.98842283073235 62.3688694058563 1030161.06869088 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2067-Jun-18 15:35 < 00:01 Earth 0.210324019310237 0.210323197789402 0.210324840833164 13.3790601585092 13.3781132386022 2476185.149113184 0.154199026464006 54.4814528119689 16.1104366490207 43.643994742984 1234830.90877566 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2072-Jul-08 03:56 < 00:01 Earth 0.44907272418866 0.449072306260595 0.449073142116878 21.2704414391302 21.2701624919191 2478031.663800181 0.0445701276110811 27.0556682262305 14.1127841618431 48.3708772284846 3711660.32962152 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2110-Mar-01 10:34 < 00:01 Earth 0.368585139036679 0.368577847001929 0.368592431074363 20.076543968896 20.0761838967923 2491780.939973965 0.590960457433184 367.291569491521 8.79223395135048 -8.11337880586508 797238.637295208 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2115-Mar-20 03:28 00:01 Earth 0.113977207004702 0.113969710465554 0.113984703594333 12.6735223773829 12.6716776651886 2493625.644707184 1.10043684483432 392.50731947522 8.47591030055865 -17.7673028220744 558567.465078468 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2120-Apr-28 15:52 00:02 Earth 0.0742385472485804 0.0742353242985887 0.0742417704798585 8.99871146401151 8.99472214430875 2495492.161400834 2.39277023814114 279.163762939488 8.65513373666307 54.8884754034456 951456.771055557 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2125-Jun-17 20:07 < 00:01 Earth 0.194733992889146 0.194730519940912 0.194737465907826 12.7487541136134 12.7476808136249 2497368.338306743 0.774815978561041 253.754734661551 15.6861036010629 47.084999448639 1183899.65489269 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2130-Jul-08 20:09 < 00:01 Earth 0.423676626847897 0.423674036793244 0.423679216904935 20.5323964913567 20.53209019527 2499215.339926548 0.240910296592618 138.703835742151 17.3263136764374 21.5634964512247 1235311.98350107 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2168-Mar-02 04:47 00:01 Earth 0.363033782343639 0.363019610990794 0.363047953705502 19.8944554095132 19.8940864851913 2512966.699418956 1.19566383226148 712.41441583881 8.89926490845116 -7.29145777448633 690467.521137447 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2173-Mar-22 14:55 00:02 Earth 0.0918316395675149 0.091817115971738 0.0918461634217457 12.0284172374947 12.026004805456 2514813.121427367 2.38447459212449 763.911313738956 8.49892986327114 -18.562049956753 473765.547093523 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2178-May-05 11:59 00:04 Earth 0.0872547654296246 0.0872497101497262 0.0872598216126589 9.06180210422291 9.05843164248421 2516682.999334417 4.34324413739802 509.779309246916 9.70199041239332 60.3791276886626 1047480.75560785 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2183-Jun-19 21:39 00:01 Earth 0.199034183319748 0.199028447388444 0.199039919422365 12.9247181938917 12.9236823817299 2518554.401794232 1.23593306050906 408.494910237459 15.7392258730245 45.6050708149204 1169853.7712811 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
2188-Jul-08 14:55 < 00:01 Earth 0.418357233498147 0.418354081251643 0.418360385747552 20.3395613853134 20.3392482537588 2520400.121662633 0.313561631313728 166.624154835177 17.6361211345726 19.4898722777263 1082901.66724809 T 119 CATAB v2.0e-lin.ifort 2019-Jun-01 06:34:57 2019-Jun-01 06:35
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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