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JPL Small-Body Database Browser
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(2021 BK1)
Classification: Apollo [NEO]          SPK-ID: 54106344
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 2459232.5 (2021-Jan-18.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7212270675580118 0.00076874  
a 1.103968969120047 0.0017198 au
q .3077566668465543 0.00036924 au
i 25.58506586467089 0.053379 deg
node 300.3267674648962 0.00035253 deg
peri 309.7575641550634 0.0089516 deg
M 317.2936046852504 0.13992 deg
tp 2459282.760191759455
(2021-Mar-09.26019176)
0.04722 TDB
period 423.6758663439518
1.16
0.99005
0.002711
d
yr
n .8497061753990539 0.0019856 deg/d
Q 1.90018127139354 0.0029602 au
  Orbit Determination Parameters
   # obs. used (total)      37  
   data-arc span      3 days  
   first obs. used      2021-01-17  
   last obs. used      2021-01-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .38065  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:24:08  

Additional Information
 Earth MOID = .000330476 au 
 Jupiter MOID = 3.34287 au 
 T_jup = 5.289 
[ 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 26.35   .56658 E2021B84 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
1956-Jan-25 22:15 6_06:04 Earth 0.402627285513562 0.180013389728737 0.641364014744106 18.4228354037544 18.4224761867261 2435498.427190824 9004.18380572996 12190951.2722124 95.0385818166986 -15.7503479509036 146537.551325157 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
1963-Jan-25 03:48 21:34 Earth 0.150865783844492 0.113385735885212 0.188369323623175 22.86365661108 22.8628841381824 2438054.658150638 1293.91231241318 1871919.79212092 33.8508831220933 -2.76976825678438 34367.0563821836 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
2014-Jan-26 18:04 2_17:17 Earth 0.245074873199439 0.039879314391525 0.530846831532361 20.7589804620603 20.7584567253348 2456684.252569918 3916.65532248219 14338465.5684708 42.4267219154548 -9.36562883666134 161530.714550609 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
2021-Jan-20 12:56 < 00:01 Earth 0.00317325409291428 0.00315867029112356 0.00318783758124774 26.7570747234772 26.7256751481235 2459235.038848513 0.086936557810721 725.522909410907 2.82833872024944 0.60104545125562 562.172577487086 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
2021-Jan-20 14:50 < 00:01 Moon 0.000879296117325075 0.000866175795727636 0.000892464422114013 27.574693691657 27.5733419815278 2459235.117894139 0.562058607521155 731.12393886119 3.01510473772064 26.2985722476496 18740.8549577588 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
2024-Oct-16 04:50 7_13:04 Earth 0.464301398017312 0.418392543806986 0.538475433807898 32.570303110299 32.5701269160456 2460599.701100627 10863.81706256 6488006.74512382 698.774601491304 -61.6073024416663 82418.4770966357 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
2028-Jan-22 07:23 9_12:37 Earth 0.0322770279864272 0.000503629599055354 0.320502748937929 25.9372463604322 25.934063470658 2461792.807795599 13716.8947712235 14372842.201215 8.52350916305709 -0.9007702013364 8200.44965362811 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
2125-Jan-21 19:34 2_09:46 Moon 0.00471985832298594 0.00464513129839931 0.0777119461386108 26.7815217569726 26.7812624843474 2497221.315108276 3465.52287672317 3826577.14094666 7.11349231824363 -79.8007354267768 97035.5298180907 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
2125-Jan-21 23:01 2_14:45 Earth 0.00565753376611132 0.00563776254500409 0.0759548262898062 26.7979765120791 26.7803962365023 2497221.459247449 3765.39650897996 3753792.94327996 7.03450649397945 -85.2267892933737 108499.50848014 T 3 CATAB v2.0g-lin.ifort 2021-Apr-15 23:24:09 2021-Apr-15 23:24
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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