+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100006 (1987 DA7) Classification: Mars-crossing Asteroid          SPK-ID: 2100006 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3048357329108333 5.0145e-08   a 2.03960728500755 5.407e-09 au q 1.417862103431998 1.0134e-07 au i 4.218413935380952 4.0658e-06 deg node 309.6662911856767 3.5788e-05 deg peri 210.8667843515534 3.6056e-05 deg M 215.4525554040719 5.0573e-06 deg tp 2459627.695014977969 (2022-Feb-17.19501498) 1.4996e-05 TDB period 1063.942747808363 2.91 4.2308e-06 1.158e-08 d yr n .3383640715081437 1.3455e-09 deg/d Q 2.661352466583101 7.0552e-09 au   Orbit Determination Parameters    # obs. used (total)      1405      data-arc span      12335 days (33.77 yr)      first obs. used      1987-02-28      last obs. used      2020-12-06      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46944      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:30:07   Additional Information  Earth MOID = .428881 au   Jupiter MOID = 2.33327 au   T_jup = 3.740  [ 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 15.85   n/a E2021B55   rotation period rot_per 3.9422 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm] 100006 (1987 DA7)          Discovered 1987-Feb-28 by Debehogne, H. at La Silla Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ 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 1914-Feb-11 02:05 < 00:01 Earth 0.470402146129613 0.470400801174697 0.470403491092898 2.99562109287096 2.99372964963833 2420174.586612273 0.494714551835647 121.767861865957 14.9568469084221 -57.3338794751014 1360683.66630351 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 1917-Mar-15 08:15 < 00:01 Earth 0.462204264774926 0.462203357434421 0.46220517212502 2.38929080219933 2.38687684902603 2421302.843987816 0.502023101529527 118.712995098999 13.0912647554662 68.4843121631388 1338162.02577785 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 1952-Mar-05 03:46 < 00:01 Earth 0.441110767547824 0.441110484782426 0.441111050314124 2.4115452681145 2.40903918772902 2434076.657139873 0.385313643452742 102.053537286263 13.3253243533829 87.4193477971997 1180706.83510926 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 1972-Apr-28 22:48 < 00:01 Mars 0.0528120009606577 0.0528097012655396 0.0528143006659436 7.33517359973477 7.33443453062071 2441436.450182448 0.638602105064491 120.43046160059 12.9928588836626 17.8865859815246 201704.189667347 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 1987-Mar-04 22:08 < 00:01 Earth 0.433547633056626 0.433547354940498 0.433547911172828 2.36770000009636 2.36510290941681 2446859.422252181 0.228860814694185 63.4748064029142 13.6346661298564 -88.0330081251834 1124712.24313465 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2019-Feb-09 00:01 < 00:01 Earth 0.48081163272189 0.4808112829763 0.480811982467479 3.10927677405359 3.10749397443054 2458523.501034136 0.0330003507346291 17.5904906538662 13.6836431455904 13.3773501453597 1300053.5385172 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2022-Mar-16 08:25 < 00:01 Earth 0.448971564170838 0.448971344929753 0.448971783411974 2.21685946063009 2.21418079922143 2459654.850769490 0.0545547691511881 21.3225481662478 9.78890297987691 -75.6679553780207 1199726.92371061 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2030-Aug-14 02:03 < 00:01 Mars 0.0302029948858422 0.0302022086773091 0.030203781097778 7.7599322588138 7.75871064920659 2462727.585612961 0.155476008905903 42.7318161009504 13.3441297458568 24.7535837075738 172518.551664699 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2054-Feb-16 23:31 < 00:01 Earth 0.453870105333939 0.453869619479166 0.453870591189435 2.78024439757493 2.7781320624703 2471315.479788200 0.181879063530608 45.6339276892488 16.236935650634 -65.1964094348431 1188432.45675834 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2057-Mar-23 17:51 < 00:01 Earth 0.477583670520687 0.477583125368968 0.477584215673329 2.33380093026508 2.33140914779614 2472446.243865088 0.202076638374605 47.1392656337106 14.1464436255519 59.0758729993157 1249466.03240506 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2089-Feb-09 23:00 < 00:01 Earth 0.484707504592129 0.484706587597318 0.484708421589227 3.13847867482735 3.13672667254907 2484092.458088262 0.306321801802693 72.520016748352 16.2467944979966 -52.8792075282948 1300330.40385762 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2092-Mar-14 20:19 < 00:01 Earth 0.454913442362157 0.454912851677819 0.454914033050193 2.30847405495804 2.30593543640097 2485221.346307373 0.331062749866152 80.4156810874962 14.634464046085 71.1701885807881 1183344.95940478 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2115-Mar-30 10:59 < 00:01 Mars 0.0427375202171857 0.0427341471425584 0.0427408932978838 8.60341628644325 8.60263763052326 2493635.957562992 0.520415362010088 170.120970504605 13.3802027212881 -8.64643450679774 79118.1313048928 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2127-Feb-27 01:20 < 00:01 Earth 0.446020454415813 0.446020011217984 0.446020897616812 2.57306668998407 2.57074393925475 2497987.555517039 0.323652375010674 84.1715679672256 15.0361108650657 -78.8160400677543 1167339.58928185 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2162-Feb-20 15:19 < 00:01 Earth 0.455188003984177 0.455187580676501 0.455188427292008 2.7481726315823 2.74604181563826 2510765.138312137 0.087526686982008 26.3800891194247 12.1252137786727 -42.757520972065 1244524.09670383 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2165-Mar-26 18:52 < 00:01 Earth 0.476176463324259 0.4761763404816 0.476176586167001 2.25974538209324 2.25726782844873 2511895.285777265 0.0985729503085959 26.3728659700911 5.70261350080512 85.2264150343965 1849196.87738636 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 2197-Feb-28 14:05 < 00:01 Earth 0.435363675968385 0.435363245498281 0.435364106440594 2.44002343250549 2.4375139188845 2523557.086983673 0.241569419774203 66.0896778743876 13.7384669120952 -75.3743490678307 1202354.45082025 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:30:10 2021-Apr-13 15:30 Alternate Designations  1987 DA7 = 2000 VJ39  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 00:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin