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(2021 CR2)
Classification: Apollo [NEO]          SPK-ID: 54110693
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 2459254.5 (2021-Feb-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .282179040244043 0.00076929  
a 1.27422950553214 0.0013457 au
q .9146686466104397 1.4468e-05 au
i 24.06524888830509 0.039703 deg
node 138.7699443041009 0.0012391 deg
peri 56.08402689479892 0.0469 deg
M 329.0842862135149 0.085168 deg
tp 2459299.617672754890
(2021-Mar-26.11767275)
0.052819 TDB
period 525.3756165533133
1.44
0.83228
0.002279
d
yr
n .6852240352564373 0.0010855 deg/d
Q 1.633790364453841 0.0017255 au
  Orbit Determination Parameters
   # obs. used (total)      36  
   data-arc span      5 days  
   first obs. used      2021-02-06  
   last obs. used      2021-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .5247  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-28 05:51:52  

Additional Information
 Earth MOID = .0238666 au 
 Jupiter MOID = 3.42147 au 
 T_jup = 4.951 
[ show covariance matrix ]

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 24.66   .56452 E2021-CK0 autocmod 2.8

[ 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
2013-Jan-01 04:38 1_08:38 Mars 0.0646191732892805 0.0399185977230487 0.274371916314378 12.2793940980059 12.2790332916064 2456293.693076542 1957.71591578041 11002588.8014253 388.888141537904 38.1613767855365 15581.3644910501 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2021-Feb-08 12:56 < 00:01 Earth 0.0262778501609118 0.0261364529101909 0.0264192460037153 14.8188432079342 14.8119992312498 2459254.038695407 0.0953227792771736 7044.34425062268 16.6373390381957 0.0409098141564576 408.832811316602 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2021-Jul-29 14:03 07:49 Earth 0.361245049785587 0.358446340925324 0.364159782996441 12.5902863264935 12.5897004784962 2459425.085337507 468.858259046339 352901.421773779 1482.31107181486 -66.191085477468 27130.099634228 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2077-Feb-14 11:18 3_08:32 Earth 0.122608644687423 0.0479466693501772 0.197343958486434 13.3780543768858 13.3764298583261 2479713.970671183 4831.55886803416 3727920.39440932 119.587272358834 -1.79522448711853 4816.04521327622 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2077-Jul-24 11:45 1_11:26 Earth 0.313135674539865 0.297310314235037 0.345083428129885 12.6939977269652 12.6933273904776 2479873.989426766 2126.34198525254 3759614.48746136 612.483787067445 71.0355350569502 82476.0008265818 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2087-Jul-16 14:53 2_13:44 Earth 0.309059039105329 0.284002731478332 0.412872428943061 15.1426942452642 15.1421248997308 2483518.120056231 3704.34813292302 8865664.11780834 594.778572860376 -66.7753873085513 78307.7938342075 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2090-Jan-25 00:02 9_09:21 Earth 0.359182048688689 0.14331976650921 0.57503935711425 21.742181700487 21.7418405091306 2484441.501366735 13521.2281166914 10763848.8954195 74.4311857990767 -0.0586477081435306 583.99369151693 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2091-Dec-31 03:21 11:08 Mars 0.0339955145056719 0.0264154537245379 0.26122936343128 13.0476078405943 13.0469623879037 2485146.639768058 667.958534392257 11893170.2475601 465.474483121639 -51.0152753742004 8512.92381651171 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
2153-Jul-18 07:02 4_19:27 Earth 0.288262680174514 0.280066648916273 0.45678401169563 14.3872031869914 14.3865607104774 2507625.792799233 6927.23782821122 14592997.4987439 563.233322324192 -76.3150729582278 84802.3782102504 T 4 CATAB v2.0f-lin.ifort 2021-Feb-28 05:51:52 2021-Feb-28 05:51
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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