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137120 (1999 BJ8)
Classification: Apollo [NEO, PHA]          SPK-ID: 2137120
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 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5498210822562427 1.8017e-08  
a 1.899487683575771 1.4994e-09 au
q .8551093096597369 3.4025e-08 au
i 8.989040111347911 1.0171e-05 deg
node 339.5966942818595 2.5931e-05 deg
peri 221.8756864117048 2.5675e-05 deg
M 30.43288736648286 3.8687e-06 deg
tp 2458919.666048839243
(2020-Mar-11.16604884)
1.0195e-05 TDB
period 956.2097104832022
2.62
1.1322e-06
3.1e-09
d
yr
n .3764864506741736 4.4578e-10 deg/d
Q 2.943866057491805 2.3238e-09 au
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      7888 days (21.60 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46293  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-20 07:02:39  

Additional Information
 Earth MOID = .0238108 au 
 Jupiter MOID = 2.06822 au 
 T_jup = 3.736 
[ 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 18.0   n/a MPO502857  

137120 (1999 BJ8)          Discovered 1999-Jan-20 by CSS at Catalina
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ 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
1902-Jun-28 19:48 < 00:01 Earth 0.334527868594275 0.334526591148569 0.334529146042586 21.0132850139699 21.0129059696272 2415929.325240933 0.130628221898338 80.8745070383376 22.6792927291841 39.9332029894457 1365819.99351513 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1910-Feb-15 13:31 < 00:01 Earth 0.0533728561221716 0.0533712424627986 0.0533744698145838 14.4279093445511 14.4244488306846 2418718.063451287 0.271555576104738 104.256441559468 3.53766905247651 -39.5138699096538 1429362.53587167 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1923-Jun-01 06:33 < 00:01 Earth 0.163400201034481 0.163399595996737 0.163400806074687 11.4836420585831 11.482221997662 2423571.773072570 0.263769751214889 57.3409011086409 22.9671281720664 -68.1325970363101 1021679.64555567 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1931-Jan-23 23:06 < 00:01 Earth 0.41369958922784 0.413698903121088 0.413700275334686 25.0982222390775 25.0979656214257 2426365.462512912 0.0520263923395675 35.5563313695884 5.24278024226824 -15.9788303224853 3436159.91468998 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1944-Mar-20 15:09 < 00:01 Earth 0.138612643599763 0.138612429740629 0.13861285745959 11.0119293582309 11.0101836143848 2431170.131465179 0.0631444266806713 19.3540966350669 3.09426996107037 57.7147813521601 4115921.77995375 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1957-Jun-25 11:11 < 00:01 Earth 0.274829262809111 0.2748281544076 0.274830371211184 19.058977466214 19.058468773423 2436014.965821190 0.0956923583814247 59.311269684684 22.7639408253476 23.1342541401097 873076.908599321 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1965-Feb-13 02:51 < 00:01 Earth 0.0819684875169698 0.0819670824519911 0.0819698925837983 15.3572140188197 15.3550972036906 2438804.618646152 0.167391143935343 72.7130788502743 3.81150748438197 -15.5406896978821 852227.26879653 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1978-May-20 09:23 < 00:01 Earth 0.173755097278326 0.173754676752202 0.173755517804638 10.6131948076525 10.6117498396432 2443648.890987192 0.30313987116141 49.4879858037485 20.5525727805791 84.6970668464813 1224547.77637628 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1986-Jan-20 12:52 < 00:01 Earth 0.487105561770456 0.487105036216539 0.487106087324401 27.2703436189583 27.2701430331258 2446451.036127975 0.0458931402778062 26.8741250365627 5.84820520493964 13.1122064310917 3562635.19152824 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1991-Jul-08 02:34 < 00:01 Earth 0.454850277026788 0.454849748233834 0.454850805819768 25.0535054269929 25.0532716092737 2448445.606732280 0.0335527188502247 27.3698832705114 23.6684733622552 -32.2556124481491 2439934.29972657 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
1999-Feb-23 20:55 < 00:01 Earth 0.0362963776186629 0.0362962186852085 0.0362965365521173 12.6151946265464 12.6093741932491 2451233.371784966 0.043757494914684 7.92605229554956 4.34128249502759 -0.145115898333078 711650.359891252 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2012-Jun-16 11:42 < 00:01 Earth 0.176862678292346 0.176862212779302 0.17686314380551 14.8838147271626 14.8828025030651 2456094.987766341 0.0415155857845656 25.2945022089255 16.2381186143445 -31.2050460789143 1175863.5511414 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2020-Feb-01 01:38 < 00:01 Earth 0.278528331946484 0.278527869451367 0.2785287944416 21.2150011666603 21.2145502414319 2458880.567867443 0.0405521427118331 23.1320722666179 8.2358470105458 -4.75970068011381 1722581.32752562 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2033-Apr-19 20:05 < 00:01 Earth 0.182902962794341 0.18290264741236 0.182903278177009 11.0292307277731 11.0279098202875 2463707.337029648 0.248712350533835 25.5670991503248 7.66420238820903 55.7370578561075 2439915.08792123 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2046-Jul-03 12:53 < 00:01 Earth 0.364756034230917 0.364755222768551 0.364756845693594 22.3315418368047 22.3312147264114 2468530.036546881 0.0875652526830548 45.5371298170628 24.6167647113056 33.0413226715857 1436349.41586455 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2054-Feb-24 12:47 < 00:01 Earth 0.0359668620256764 0.0359660449804741 0.035967679082939 12.520145980572 12.5142275974595 2471323.032763920 0.191132320972727 52.6209825327379 6.68357511111367 39.6383723353469 543817.83018756 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2067-Jun-25 03:11 < 00:01 Earth 0.237538840176466 0.237538182349939 0.237539498003047 17.9174338882723 17.9168078375776 2476191.632436963 0.0652553480678251 33.7069243935443 22.6619719343811 18.1105087317356 1027792.6170145 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2075-Feb-15 02:37 < 00:01 Earth 0.06940660818718 0.0694056293816448 0.069407586993311 15.0867216024947 15.084176804649 2478983.608718132 0.112762419556955 49.8642424694675 4.28361407817663 -11.8634430576942 522727.129266547 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2088-Jun-10 18:37 < 00:01 Earth 0.155384493144389 0.155383972675079 0.155385013614618 12.8513899578158 12.8500555851819 2483848.275949017 0.160871200942254 58.6404722409328 24.245639170017 80.0173942029709 923729.798745528 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2096-Feb-01 12:22 < 00:01 Earth 0.286175188536265 0.286173805902938 0.286176571169673 21.4192065188185 21.4187718270585 2486640.015097624 0.114453833868442 69.3782140170061 8.46276571207237 -6.45315781207308 773365.373679722 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2109-May-08 13:53 < 00:01 Earth 0.184927200016874 0.184926694729831 0.184927705305736 10.669689272111 10.6683387948492 2491484.078409517 0.715953440716199 64.445207289066 22.004724522217 -78.3126374765741 1108836.94241259 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2117-Jan-22 15:42 < 00:01 Earth 0.474554739215077 0.47455241074258 0.474557067687654 27.0653229700704 27.0651155195674 2494300.154503959 0.173333526285086 116.483757516461 8.31697357365979 -4.59939619903832 850918.019897151 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2130-Apr-03 15:29 < 00:01 Earth 0.167086906517264 0.167085967468942 0.167087845573041 11.0612406651638 11.0597989004197 2499119.145239321 0.88486842802576 72.9866460365208 5.20601304886284 50.2664455256153 3294374.84865734 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2143-Jul-06 15:57 < 00:01 Earth 0.379197733318242 0.379195188171772 0.379200278468204 22.7812413581837 22.7809329171294 2503961.164239428 0.198388734353979 139.702240735972 23.8416914194719 25.0991357351209 986699.023295263 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2151-Mar-05 09:15 < 00:01 Earth 0.0749911929570223 0.0749888708780639 0.0749935150465693 11.4911789366029 11.4880865345878 2506759.885492894 0.670590186383703 124.044265651675 4.91140675895583 21.0225961965753 897612.8155585 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2164-Jul-01 16:01 < 00:01 Earth 0.308521868689828 0.30852110113425 0.308522636246072 20.5203490463153 20.5199281781143 2511627.167381885 0.0612852581496727 47.3012726784603 22.3538859952188 41.8162414157208 1439258.90722238 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2172-Mar-03 05:54 < 00:01 Earth 0.0683461256930908 0.0683455390488234 0.0683467123383334 11.6363493561742 11.632998589111 2514428.746153180 0.145271401631512 32.0903387925985 6.26103944199663 24.7712789140892 803841.317332955 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2185-Jul-06 00:29 < 00:01 Earth 0.368595995452153 0.368594019541228 0.368597971364608 22.5227220061108 22.5224010512464 2519301.519983852 0.183070666587808 105.802117594901 23.7633178984458 21.9569084742118 907947.687854794 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
2193-Mar-23 15:11 00:01 Earth 0.143075211404433 0.143073314367442 0.143077108460024 10.8594965013475 10.8577814680117 2522119.132548323 1.02248822222826 124.857264456831 5.26185140067273 40.7870203006299 2561914.33437164 T 79 CATAB v2.0f-lin.ifort 2020-Aug-20 07:02:51 2020-Aug-20 07:03
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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