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66251 (1999 GJ2)
Classification: Amor [NEO]          SPK-ID: 2066251
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 327 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1979442184829653 2.9081e-08  
a 1.535596217266083 2.2419e-09 au
q 1.23163382413395 4.4796e-08 au
i 11.27814771883239 3.7276e-06 deg
node 196.2020983339291 1.2485e-05 deg
peri 142.4819711209214 1.7752e-05 deg
M 121.6004276931379 1.4482e-05 deg
tp 2459161.727849021277
(2020-Nov-08.22784902)
2.7536e-05 TDB
period 695.0466865595547
1.90
1.5221e-06
4.167e-09
d
yr
n .5179508182133512 1.1343e-09 deg/d
Q 1.839558610398215 2.6857e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1653  
   data-arc span      13280 days (36.36 yr)  
   first obs. used      1984-10-12  
   last obs. used      2021-02-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-07 06:21:36  

Additional Information
 Earth MOID = .247771 au 
 Jupiter MOID = 3.56507 au 
 T_jup = 4.433 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456767.5 (2014-Apr-20.0) TDB
Reference: JPL 327 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1981013451200656 2.9085e-08  
q 1.231295801001939 4.4807e-08 au
tp 2457076.648498292028
(2015-Feb-23.14849829)
2.385e-05 TDB
node 196.2345085880211 1.2488e-05 deg
peri 142.4331614839251 1.7745e-05 deg
i 11.27691296780153 3.7274e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1653  
   data-arc span      13280 days (36.36 yr)  
   first obs. used      1984-10-12  
   last obs. used      2021-02-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48165  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Sep-07 06:21:36  

Additional Information
 Jupiter MOID = 3.56507 au 
 T_jup = 4.433 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.459169366082752E-16 -1.302139306933555E-15 1.867256663318114E-13 -1.751062380022804E-14 1.483721860156988E-13 4.60951616294394E-15
q -1.302139306933555E-15 2.007700156902465E-15 -2.540474792647084E-13 2.538994587410126E-14 -2.127440277296211E-13 -6.643358564648739E-15
tp 1.867256663318114E-13 -2.540474792647084E-13 5.688146733002671E-10 -2.804730693852729E-11 3.011613310276972E-10 1.028697270189907E-11
node -1.751062380022804E-14 2.538994587410126E-14 -2.804730693852729E-11 1.55945805308167E-10 -1.657052456713817E-10 4.260582984333226E-12
peri 1.483721860156988E-13 -2.127440277296211E-13 3.011613310276972E-10 -1.657052456713817E-10 3.148911732823089E-10 7.962429354621337E-13
i 4.60951616294394E-15 -6.643358564648739E-15 1.028697270189907E-11 4.260582984333226E-12 7.962429354621337E-13 1.389386126658306E-11

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 16.93   n/a E2021B10  
diameter diameter 1.222 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 2.4621 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2005) http://www.asu.cas.cz/~ppravec/neo.htm]
[Polishook, D. (2012) Minor Planet Bull. 39, 187-192.]
geometric albedo albedo 0.187   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

66251 (1999 GJ2)          Discovered 1999-Apr-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ 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
1906-Aug-30 23:14 < 00:01 Earth 0.288933595843782 0.288932012303236 0.288935179385889 5.21036619956193 5.20859600970809 2417453.467967873 0.676299859102707 85.9927379020946 15.4691716237477 -23.6635755729632 1818544.01034142 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1908-Oct-21 07:28 < 00:01 Earth 0.391837269715649 0.391835321944775 0.3918392175639 6.09262292789882 6.09150672769114 2418235.811431445 0.524586472983443 291.576061458227 4.85117888289114 70.5652555156103 3734423.79463572 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1925-Aug-01 14:13 00:01 Earth 0.368257591098434 0.368256095395718 0.368259089508732 2.63755370042554 2.63480906060119 2424364.092510845 1.20707202849696 1594.42612214931 10.936451936969 87.3000812591604 1727638.62215841 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1927-Oct-06 17:44 < 00:01 Earth 0.308952069097863 0.308950699570421 0.308953438727269 5.91684561386824 5.91538785895499 2425160.238714071 0.407511842642309 288.474021283387 3.51518781769122 76.3237160968896 3327440.59707057 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1944-Jun-29 01:13 < 00:01 Earth 0.437685856977695 0.437685019330575 0.437686694624965 3.04459654332716 3.04259639238086 2431270.550765063 0.531538960612299 43.8799362786654 13.6806835884163 20.4150913329193 320858.630741636 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1946-Sep-22 10:28 < 00:01 Earth 0.253908746651897 0.253908356562522 0.253909136751448 5.72995927194868 5.72812757939062 2432085.936246430 0.285400353016369 84.3582725468036 4.1818408813719 76.9720292294771 3483219.13757197 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1963-Jun-10 17:27 < 00:01 Earth 0.495436838419327 0.495436336554228 0.495437340284679 5.20045948185995 5.19942523185449 2438191.227255412 0.253867096301069 32.4772492019651 13.6650757219839 44.7423143395967 1170491.98370954 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1965-Sep-07 21:03 < 00:01 Earth 0.262995893723417 0.26299545921826 0.262996328229487 5.49597731394646 5.49413360947485 2439011.377393743 0.230442875750441 36.8622534257889 12.6022612985037 -59.4028885013677 2147644.79438051 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1967-Oct-29 10:09 < 00:01 Earth 0.430030240152547 0.430029501678888 0.430030978630166 6.15591038598604 6.1549037867882 2439792.922730485 0.212372076695568 75.955322831954 7.33865667600173 61.490345136318 3953219.7513449 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1984-Aug-17 05:08 < 00:01 Earth 0.334168055012402 0.334167634305415 0.334168475720395 4.25523757953417 4.25336336515308 2445929.714087651 0.248246256706382 41.6272390373435 12.618407455024 64.9196279739976 1585052.71365389 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
1986-Oct-13 01:42 < 00:01 Earth 0.34129431434572 0.341293944210877 0.341294684489448 5.98355219915413 5.98224731614249 2446716.571142733 0.112284120472688 89.9350804455884 3.109035866672 78.3221690118852 3462024.69510471 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2003-Jul-15 04:27 < 00:01 Earth 0.404899741789561 0.404899547080612 0.40489993649851 1.7622496573288 1.75851149385861 2452835.685634831 0.0819528535959327 21.7350195696991 9.576640789915 -87.2239062232288 1736355.73812087 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2005-Sep-29 19:39 < 00:01 Earth 0.275965165850625 0.275964994167164 0.275965337535356 5.83462788057405 5.83297284806987 2453643.318858360 0.0337499868702219 32.2859128653576 2.79737584688853 75.4299285065053 3682958.23470091 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2022-Jun-20 09:14 < 00:01 Earth 0.466516824865676 0.466516477451749 0.466517172279603 4.14069703769728 4.13931746705527 2459750.884919685 0.0973377512755548 18.4488299238935 14.3364399782865 33.6528769541694 1141305.35077733 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2024-Sep-15 19:53 < 00:01 Earth 0.24828979717926 0.248289645242069 0.248289949116577 5.64641498094991 5.64451410489924 2460569.328603237 0.0929983945094668 29.7446246311754 7.23671720606875 85.5435597811234 2739893.93596766 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2026-Nov-06 20:16 < 00:01 Earth 0.474885747652745 0.474885278551557 0.474886216754095 6.25251970134001 6.25162227394922 2461351.344295738 0.10761286130137 28.823452818222 12.055664366495 40.0426744265714 2992468.88466744 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2043-Aug-31 14:46 < 00:01 Earth 0.290710879717516 0.290710176076682 0.290711583358663 5.22563347379215 5.22387924987448 2467493.115089529 0.25154368805387 39.0050366975889 15.3190469482623 -28.3048695373111 1810700.32035572 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2045-Oct-21 17:16 < 00:01 Earth 0.388017562054758 0.388016661388454 0.388018462737495 6.05181934472933 6.05068455410592 2468275.219490274 0.218189993832173 134.328800726404 4.79126874278569 70.5707919258397 3641944.75397614 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2062-Aug-01 10:19 < 00:01 Earth 0.372707736783576 0.372706565040184 0.37270891021102 2.57957815519422 2.57680529011112 2474402.929793568 0.778486535453111 1275.94075507109 11.4158362821338 87.3863374992175 1739936.86322794 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2064-Oct-06 02:09 < 00:01 Earth 0.303835037796727 0.303833928763149 0.303836146906746 5.91208790843743 5.91060440652453 2475199.589618970 0.299257687498131 247.138229539493 3.6467972187865 77.096703903315 3363196.0682612 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2081-Jun-29 23:40 < 00:01 Earth 0.441716264188866 0.441715089723928 0.441717438654131 3.09092104831768 3.08896887567441 2481310.486011349 0.587389924366253 61.8017229742355 13.6184540223728 20.2848169496067 346661.610028577 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2083-Sep-22 22:34 < 00:01 Earth 0.251729638981041 0.251729126887788 0.251730151092152 5.73141442982294 5.72956734781694 2482125.440258570 0.359338806677611 110.149206646886 4.16602084392034 76.7699874349476 3459112.54771124 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2100-Jun-12 02:55 < 00:01 Earth 0.497742159532098 0.497740869066056 0.497743449999611 5.18767569127226 5.18664369456733 2488231.621190371 0.491974933763443 77.897600255009 14.203760517306 35.0718455860408 940708.988230123 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2102-Sep-10 01:03 < 00:01 Earth 0.26203259915748 0.262031518659305 0.262033679665903 5.52946861688232 5.52762934525926 2489051.543917731 0.501982866349657 99.8313071005162 12.5256066472643 -58.0466333823858 2064801.32067337 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2104-Oct-30 12:10 < 00:01 Earth 0.429723601674456 0.429721534373298 0.429725668998576 6.10677175555939 6.10575633121811 2489833.006800191 0.530109951379826 188.020768855443 8.33583529009081 56.8384529817835 3693183.38276776 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2121-Aug-20 03:35 00:01 Earth 0.332317452824295 0.332315015879035 0.332319889803576 4.39138340465193 4.38955720539264 2495970.649302626 1.19137171079919 208.059620472185 14.4279782069283 54.3765481714155 1654581.79482918 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2123-Oct-15 10:30 < 00:01 Earth 0.341583045855593 0.341580592211836 0.341585499940654 5.98133772566591 5.98003346295476 2496756.937166376 0.632455835470239 624.618801306567 3.2031311999488 78.7068034794547 3406631.04740249 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2140-Jul-13 03:07 00:01 Earth 0.414579347110478 0.414577080848051 0.414581613391759 2.01074481308095 2.00754596711265 2502872.630111966 1.40665907901549 180.303534159582 12.7680154750448 52.2037331552645 900349.230205274 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2142-Sep-29 21:42 < 00:01 Earth 0.267641502036106 0.267639767733064 0.267643236433519 5.81063592895239 5.8089223691144 2503681.404183492 0.657163299529306 265.315538016679 3.23540046174654 70.989548987378 3595690.56972681 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2159-Jun-21 09:32 < 00:01 Earth 0.472963587948546 0.472961492813241 0.472965683086755 4.27650735426599 4.27518981874721 2509789.897258453 0.941495653296741 120.023762203017 14.3197752030468 29.9762143774565 596403.419392573 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2161-Sep-17 04:17 < 00:01 Earth 0.247337944484955 0.247337488950157 0.247338400059443 5.66188594185282 5.65998296509836 2510608.678411841 0.712555590780824 171.482018236697 8.94084260086494 -82.9925342714361 2589685.4853706 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2163-Nov-08 10:33 < 00:01 Earth 0.471360172135899 0.471357112349496 0.471363231935914 6.17979480081166 6.17888001891072 2511390.939740647 0.811678584471354 198.316922560564 11.6535889206824 39.7892001115613 3029420.05078184 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2180-Sep-02 10:41 00:01 Earth 0.28791412932679 0.287911090078832 0.287917168580361 5.30442187582647 5.30267692673931 2517533.945452690 1.1628497998003 164.426988970303 15.3359113980246 -22.8706438365038 1637336.80121824 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2182-Oct-24 07:21 < 00:01 Earth 0.389500555520654 0.389496735539568 0.389504375810069 6.03752028708453 6.0363871396252 2518315.806526796 0.982031648266669 578.958583714472 4.95369550568839 70.7968106019872 3660264.45759001 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
2199-Aug-04 06:46 00:03 Earth 0.373356082492036 0.37335214066808 0.373360044439633 2.72682402049133 2.72420559283083 2524443.781632464 2.86587838971876 4336.04825550567 11.2937988349632 87.3649881883455 1785572.6241242 T 327 CATAB v2.0g-lin.ifort 2021-Sep-07 06:21:43 2021-Sep-07 06:21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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