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212953 (2009 BU44)
Classification: Main-belt Asteroid          SPK-ID: 2212953
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01433155171379214 4.0256e-08  
a 3.144135313679288 3.3245e-08 au
q 3.099074975836133 1.3339e-07 au
i 3.180727423401027 6.6123e-06 deg
node 314.028552135418 9.0411e-05 deg
peri 310.5861532096702 0.00028754 deg
M 255.9787898585842 0.00027536 deg
tp 2459588.895944403822
(2022-Jan-09.39594440)
0.0015602 TDB
period 2036.339893540992
5.58
3.2297e-05
8.842e-08
d
yr
n .1767877755289643 2.804e-09 deg/d
Q 3.189195651522442 3.3722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      9009 days (24.67 yr)  
   first obs. used      1995-08-22  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54594  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 08:51:58  

Additional Information
 Earth MOID = 2.08424 au 
 Jupiter MOID = 1.81678 au 
 T_jup = 3.207 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO418140  
diameter diameter 4.486 km 0.379 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212953 (2009 BU44)          Discovered 2009-Jan-16 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ 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
1929-Oct-07 21:38 00:04 Jupiter 1.87166039236904 1.87165956946537 1.87166121527368 3.16734978245377 3.02109282553949 2425892.401656111 4.28656083377517 118.207124838024 25.5048188323398 80.2153097303518 2903633.83228261 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
1940-Mar-09 19:25 00:04 Jupiter 1.81866769242716 1.81866708187885 1.81866830297662 3.06760439235093 2.91182431812933 2429698.309067240 3.78726246184956 164.239533136484 17.9539871372671 -87.8424749670849 2494426.97672429 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
1950-Aug-17 19:34 00:03 Jupiter 1.92203818958085 1.9220371736579 1.92203920550479 3.67260164799424 3.55058071008718 2433511.314968174 3.11574364704215 112.626857681467 29.6124181704608 -74.5499319446823 2153952.0134179 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
2024-May-15 05:00 < 00:01 Jupiter 1.84991109178406 1.84991065694508 1.84991152662313 3.08733877723621 2.93528817989915 2460445.708036027 0.46845409838706 59.756334402871 12.8840574984216 -79.9114001114903 3391110.08771065 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
2034-Oct-14 22:39 < 00:01 Jupiter 1.83650730477811 1.83650669027796 1.83650791927826 3.18236660512372 3.0339791703456 2464250.443450116 0.983925345157099 65.6632843616367 19.818453370092 -83.0779476978517 2260663.17240911 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
2045-Mar-26 20:29 00:01 Jupiter 1.97661192188263 1.97661122555244 1.97661261821283 3.88115696734768 3.76912915321924 2468066.353559461 1.45965198159942 59.3360617760976 28.8209760132264 -81.8827232366877 2439271.07525842 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
2108-Jul-10 19:12 00:04 Jupiter 1.95009831103326 1.95009722355873 1.95009939850824 3.46065646677377 3.33278351162113 2491182.299713322 4.41181886716098 94.4691077327933 32.307837643045 69.4656729265644 2173499.58865733 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
2118-Dec-20 13:47 00:05 Jupiter 1.83071770577659 1.83071708900956 1.83071832254455 3.03036887774557 2.87363720355334 2494997.074629522 5.14008243987051 159.873109860148 20.3428005486975 86.6147195055885 2872998.76323912 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
2129-May-22 16:51 00:06 Jupiter 1.85713714998661 1.85713620424165 1.85713809574022 3.31974059610225 3.17938621879324 2498803.202252027 5.65228286292861 277.002299182967 22.438154433916 -84.9090391806036 2222780.40950197 T 14 CATAB v2.0f-lin.ifort 2020-May-21 08:52:07 2020-May-21 08:52
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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