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JPL Small-Body Database Browser
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(2019 BU2)
Classification: Apollo [NEO]          SPK-ID: 3838019
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 2458509.5 (2019-Jan-26.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3573796274545469 0.00082229  
a 1.495377900652891 0.0018723 au
q .9609603036137981 2.6511e-05 au
i 10.62959427795212 0.018975 deg
node 123.8456911469699 0.0014107 deg
peri 325.7399076534015 0.0031978 deg
M 16.11904618751933 0.036314 deg
tp 2458479.593767655412
(2018-Dec-27.09376766)
0.011215 TDB
period 667.9206398941755
1.83
1.2544
0.003434
d
yr
n .5389861886242024 0.0010122 deg/d
Q 2.029795497691983 0.0025414 au
  Orbit Determination Parameters
   # obs. used (total)      23  
   data-arc span      7 days  
   first obs. used      2019-01-22  
   last obs. used      2019-01-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .42678  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 21:03:38  

Additional Information
 Earth MOID = .0178305 au 
 Jupiter MOID = 3.19312 au 
 T_jup = 4.464 
[ 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 25.4   .17043 MPO467420 autocmod 2.6q

[ 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
1978-Oct-16 20:08 3_08:13 Earth 0.465824498337586 0.381384999547725 0.55375986503799 18.8312855597418 18.830981811645 2443798.338882407 4812.95323534384 4746393.87305235 54.161892361008 24.6509576760029 394369.543513053 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 21:03:39 2021-Apr-15 21:03
2019-Jan-23 03:29 < 00:01 Earth 0.0236953789452752 0.0235528444652881 0.0238379083953639 8.75096769227326 8.73810855528619 2458506.644970924 0.174498051393851 7086.58257197786 33.3061632519008 0.317882863625913 312.327985186567 T 4 CATAB v2.0g-lin.ifort 2021-Apr-15 21:03:39 2021-Apr-15 21:03
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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