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(2015 BK4)
Classification: Apollo [NEO]          SPK-ID: 3704157
[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4808214222862048 0.0004288  
a 1.667862175616697 0.0012084 au
q .8659183121593126 8.7796e-05 au
i .7498998901538114 0.00074527 deg
node 258.2857195059375 0.01044 deg
peri 278.4800299325051 0.0078927 deg
M 247.5872500600213 1.0578 deg
tp 2459446.169780442278
(2021-Aug-19.66978044)		 2.5787 TDB
period 786.7534688586662
2.15		 0.85504
0.002341		 d
yr
n .4575766288291651 0.00049729 deg/d
Q 2.469806039074081 0.0017895 au
   Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      10 days  
   first obs. used      2015-01-13  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .3591  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:36:15  

Additional Information
 Earth MOID = .00570499 au 
 Jupiter MOID = 2.49481 au 
 T_jup = 4.113 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457039.5 (2015-Jan-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4820836286333354 0.00042703  
q .8667122312374016 8.0337e-05 au
tp 2457085.495847733627
(2015-Mar-03.99584773)		 0.0064546 TDB
node 260.499933070462 0.0050652 deg
peri 276.0970279576205 0.0024699 deg
i .7770456227657601 0.00068776 deg
   Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      10 days  
   first obs. used      2015-01-13  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .3591  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:36:15  

Additional Information
 Jupiter MOID = 2.49481 au 
 T_jup = 4.113 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.823588595028034E-7 -3.430505948369728E-8 -2.756170509583525E-6 2.103202495347042E-6 -9.043512188158568E-7 2.935387475923931E-7
q -3.430505948369728E-8 6.453984509778679E-9 5.18430609383965E-7 -3.950906756998805E-7 1.694594176932656E-7 -5.52087327131383E-8
tp -2.756170509583525E-6 5.18430609383965E-7 4.166240125667642E-5 -3.183814368149812E-5 1.372922162692225E-5 -4.437544665751584E-6
node 2.103202495347042E-6 -3.950906756998805E-7 -3.183814368149812E-5 2.565579793579212E-5 -1.192748366409456E-5 3.412052431406704E-6
peri -9.043512188158568E-7 1.694594176932656E-7 1.372922162692225E-5 -1.192748366409456E-5 6.100214035708245E-6 -1.484261040443599E-6
i 2.935387475923931E-7 -5.52087327131383E-8 -4.437544665751584E-6 3.412052431406704E-6 -1.484261040443599E-6 4.730139994941014E-7

[ 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 24.9   n/a MPO324255  

[ 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
1963-May-12 17:56 2_03:01 Earth 0.00869424837008226 0.00696888650201406 0.0201613975434496 10.7320481295015 10.7034540152493 2438162.247034965 3060.56348932566 684658.66476367 71.1105140649603 -53.3358861813425 14945.4852184755 T 8 CATAB v2.0e-lin.ifort 2017-Nov-29 23:28:24 2018-Dec-11 16:30
1963-May-13 04:21 1_19:59 Moon 0.0080011516126116 0.00691171261788043 0.019939433112975 11.2642091780668 11.2638455372918 2438162.681549985 2638.62173286257 731755.827075921 72.2102914382514 -59.7706948691366 14319.9174012125 T 8 CATAB v2.0e-lin.ifort 2017-Nov-29 23:28:24 2018-Dec-11 16:30
1980-Nov-02 22:25 9_15:59 Mars 0.0425454365804147 0.0410134017179219 0.241067373484277 14.6067367152009 14.606276027254 2444546.434104266 13919.3330263989 11281807.7597007 45.3963826439101 -74.5824369870817 133615.494138568 T 8 CATAB v2.0e-lin.ifort 2017-Nov-29 23:28:24 2018-Dec-11 16:30
2015-Jan-25 01:25 < 00:01 Earth 0.0136868798482862 0.0136535535000095 0.013720205686038 11.1038666394076 11.0863206877232 2457047.559280610 0.09560438771969 1656.59326460506 6.7949211121974 -0.122770631010336 819.427704492327 T 8 CATAB v2.0e-lin.ifort 2017-Nov-29 23:28:24 2018-Dec-11 16:30
2017-Jun-13 06:59 1_13:29 Earth 0.457868311435278 0.415466312770904 0.500285462268878 24.3324460885812 24.3322069288075 2457917.791113593 2248.71151538792 2118868.91017518 50.5355036106535 3.54845020347144 76624.9749817171 T 8 CATAB v2.0e-lin.ifort 2017-Nov-29 23:28:24 2018-Dec-11 16:30
2027-Dec-27 20:19 8_22:30 Earth 0.468336816924799 0.204271943263467 0.732833905267298 25.0064847066242 25.0062571951065 2461767.346250037 12870.3023476525 13197711.6295335 15.4627778288505 -2.55647744414888 190129.174623958 T 8 CATAB v2.0e-lin.ifort 2017-Nov-29 23:28:24 2018-Dec-11 16:30
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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