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(2021 GW4)
Classification: Apollo [NEO]          SPK-ID: 54135784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3037022219575975 0.00013129  
a 1.402978919708251 0.00024999 au
q .9768911044331856 1.0164e-05 au
i 5.071250289800893 0.0023814 deg
node 22.5996875769265 0.00023765 deg
peri 206.9048163182303 0.00094409 deg
M 33.18272402079063 0.0085938 deg
tp 2459340.551985390797
(2021-May-06.05198539)
0.00061865 TDB
period 606.9810678199124
1.66
0.16223
0.0004442
d
yr
n .5930992234947431 0.00015852 deg/d
Q 1.829066734983317 0.00032592 au
  Orbit Determination Parameters
   # obs. used (total)      40  
   data-arc span      4 days  
   first obs. used      2021-04-08  
   last obs. used      2021-04-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .35498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 07:01:18  

Additional Information
 Earth MOID = .000105747 au 
 Jupiter MOID = 3.16078 au 
 T_jup = 4.694 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459314.5 (2021-Apr-10.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3555924682136914 8.5031e-05  
q .9769115603248548 6.1966e-06 au
tp 2459338.942811157739
(2021-May-04.44281116)
7.6789e-05 TDB
node 201.4792966183061 2.064e-05 deg
peri 26.64400993098895 0.00084055 deg
i .7405220093339596 0.00013836 deg
  Orbit Determination Parameters
   # obs. used (total)      40  
   data-arc span      4 days  
   first obs. used      2021-04-08  
   last obs. used      2021-04-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .35498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 07:01:18  

Additional Information
 Jupiter MOID = 3.16078 au 
 T_jup = 4.694 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.230224629789958E-9 -5.267094278576644E-10 -6.097447999877907E-9 8.466261488441591E-10 7.141200687456424E-8 1.16575231885464E-8
q -5.267094278576644E-10 3.839769396788928E-11 4.443859469371613E-10 -6.383164770019337E-11 -5.202396677135556E-9 -8.465414985012278E-10
tp -6.097447999877907E-9 4.443859469371613E-10 5.896623306213088E-9 -8.760848119722907E-10 -5.933045353272645E-8 -9.625148669873455E-9
node 8.466261488441591E-10 -6.383164770019337E-11 -8.760848119722907E-10 4.26003886849684E-10 8.068654739948891E-9 1.095552599304471E-9
peri 7.141200687456424E-8 -5.202396677135556E-9 -5.933045353272645E-8 8.068654739948891E-9 7.065212816243489E-7 1.153714192032838E-7
i 1.16575231885464E-8 -8.465414985012278E-10 -9.625148669873455E-9 1.095552599304471E-9 1.153714192032838E-7 1.914430705900075E-8

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 29.47   .22693 E2021-GL9 autocmod 2.9c

[ 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
2008-Apr-13 08:38 9_15:19 Moon 0.00320446085490358 7.34193235977649e-05 0.0400450445171601 6.93846226335886 6.93698809626472 2454569.860049712 13878.7388530298 1837132.87178955 4.02227527473046 1.32513123883948 2312.97935296605 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2021-Apr-12 13:01 < 00:01 Earth 0.000175131371899942 0.000174924596875557 0.000175338081444841 8.36024941650424 6.28215093168615 2459317.042684094 0.319705690999573 7.69321711770865 0.583300346584236 -2.9984522989197 1666.02220240236 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2021-Apr-12 21:41 < 00:01 Moon 0.00217201385099637 0.00217182787861567 0.0021722016410612 7.29245441049348 7.29038501219592 2459317.403148871 0.297186106806837 106.882320841233 3.41507479539763 -85.3245978396835 134903.918742119 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2026-Mar-29 21:11 2_12:03 Earth 0.0867158553178855 0.062538293965806 0.110945976982362 8.69903518878935 8.6955022919598 2461129.382477427 3602.95660457726 1211636.06776456 98.7431045719413 -4.9963803239668 9400.2118039157 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2031-Mar-19 14:52 2_07:42 Earth 0.223244783046338 0.186058148883681 0.260458738092917 12.726795119658 12.7258572813095 2462945.119626436 3342.48334629804 1859112.12902551 138.643362946167 -3.81105834908266 12971.7575010746 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2031-Aug-14 12:48 4_11:26 Earth 0.424108898291011 0.402165234487557 0.446373204944298 5.03964838185171 5.03840160577672 2463093.033673274 6446.16723832188 1246282.49529279 1057.25144062641 -27.8981495304841 9600.46991800107 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2036-Mar-10 09:21 2_08:51 Earth 0.373600198517665 0.327649298116242 0.419566206340775 17.1333846441823 17.1329683816046 2464762.889302866 3410.82498805805 2294822.35787819 138.39051565182 -2.97091998731346 17572.8619404958 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2069-Jul-23 07:43 4_12:09 Earth 0.460337852067431 0.379050311390515 0.542075149467965 19.1255128470655 19.1252102072828 2476950.821720968 6488.5789041421 4127554.40710162 1055.83420120937 9.85987620504557 9487.99441908604 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2074-Feb-03 08:52 8_17:12 Earth 0.475175318088221 0.426135079373006 0.524234757639971 6.12350767956447 6.12259190054044 2478606.869351175 12551.5335173466 2450551.3740308 1504.30706549196 3.9507294141517 1418.62197611025 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2074-Jul-15 05:58 5_05:57 Earth 0.314188777753761 0.231926472953707 0.398561653832861 14.7287506460424 14.7281748558445 2478768.748531481 7557.35229555041 4348949.92237913 1048.21568235619 16.5650496390215 10489.8319703224 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2079-Jul-05 14:12 7_10:00 Earth 0.180690257613009 0.113727462281566 0.259874778950023 10.5085371225626 10.5071337778699 2480585.091405237 10679.7522948024 4343096.4309368 1036.99833557558 29.8596491058212 10519.4424333177 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2114-Jul-05 22:58 6_19:19 Earth 0.181066493689961 0.117996364672843 0.253486896923408 10.5742066413039 10.5728149110989 2493368.457259701 9799.13013964425 3959381.98701055 1043.13487975493 28.9423678160742 10181.7446985528 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2119-Feb-05 15:52 4_16:59 Earth 0.476454131513885 0.449052408471904 0.503857505510013 6.078228613854 6.07730848827928 2495044.161260966 6778.83007808958 1367170.00403559 1507.4206414764 2.58884813072697 937.108309399731 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2119-Jul-16 02:32 3_03:22 Earth 0.311453317542364 0.264833686492695 0.358617720922647 14.7347145103291 14.7341338980363 2495204.605562081 4521.96692093527 2426896.226459 1057.56167107498 15.3570176909405 9587.28545117323 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2124-Jul-23 12:32 1_01:46 Earth 0.453115447852943 0.436495034360563 0.469745054809933 18.9653539805962 18.9650439203516 2497039.022396046 1546.21080494124 835246.236264314 1067.57686828577 7.00487819339277 6591.47197834295 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2134-Jan-15 04:41 10:59 Mars 0.0956536562544366 0.0956027469617466 0.10301918359322 8.28388967574497 8.28352836591063 2500501.695279569 658.521983669795 1817910.07707256 1655.79237333038 88.8954403733862 8648.68644301071 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2156-Mar-07 10:11 8_21:53 Earth 0.467875008420734 0.284128557381054 0.651751529873659 19.9381514577442 19.9378658297771 2508588.924136547 12833.032777497 9174187.43082339 127.89268804151 -2.263441425115 18549.5146163481 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2176-Apr-12 07:37 8_01:06 Earth 0.0056286689790826 0.00228753992527964 0.0381764017558868 6.50671306776647 6.43354972365555 2515929.817043990 11585.5058884035 1644710.20320617 12.9914746550607 24.4243139183098 30719.003886266 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
2176-Apr-12 08:51 7_23:04 Moon 0.00799925255608455 0.00334939130139177 0.038954266608076 7.45246318627217 7.45191341056328 2515929.868798135 11463.5174553466 1573070.3563881 11.1200871897842 24.757814967529 45838.004506791 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 07:01:18 2021-Apr-15 07:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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