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249157 (2008 BU9)
Classification: Main-belt Asteroid          SPK-ID: 2249157
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05704565397285125 7.2709e-08  
a 3.117571503379003 4.2226e-08 au
q 2.939727598161623 2.5169e-07 au
i 4.191133392658398 8.9207e-06 deg
node 15.32882849659044 7.2322e-05 deg
peri 295.2339265704945 0.00010713 deg
M 276.3673691839559 7.8996e-05 deg
tp 2459467.585428780890
(2021-Sep-10.08542878)		 0.00044128 TDB
period 2010.587885618235
5.50		 4.0848e-05
1.118e-07		 d
yr
n .1790521083783929 3.6377e-09 deg/d
Q 3.295415408596384 4.4634e-08 au
   Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      7173 days (19.64 yr)  
   first obs. used      2000-11-02  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60111  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:19:58  

Additional Information
 Earth MOID = 1.92873 au 
 Jupiter MOID = 1.87813 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457913.5 (2017-Jun-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05607466329550023 7.2704e-08  
q 2.945055414755684 2.5181e-07 au
tp 2457456.430654541996
(2016-Mar-08.93065454)		 0.00045038 TDB
node 15.35120582071101 7.2304e-05 deg
peri 295.3052067667132 0.00010811 deg
i 4.190723639230914 8.9199e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      7173 days (19.64 yr)  
   first obs. used      2000-11-02  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60111  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:19:58  

Additional Information
 Jupiter MOID = 1.87813 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.285940868774675E-15 -1.815206135858305E-14 7.58605669615124E-12 5.481087015798437E-15 1.540889464100677E-12 3.067269263082144E-15
q -1.815206135858305E-14 6.341018113290131E-14 -2.492626461700917E-11 -2.508095546964105E-14 -5.042071485870138E-12 -7.525015897834354E-15
tp 7.58605669615124E-12 -2.492626461700917E-11 2.028456796107986E-7 -1.962080359853006E-10 3.619336033414871E-8 2.223877952643752E-11
node 5.481087015798437E-15 -2.508095546964105E-14 -1.962080359853006E-10 5.227899142465872E-9 -5.247960603941244E-9 6.655371489097715E-11
peri 1.540889464100677E-12 -5.042071485870138E-12 3.619336033414871E-8 -5.247960603941244E-9 1.168688133834292E-8 -6.210779662048145E-11
i 3.067269263082144E-15 -7.525015897834354E-15 2.223877952643752E-11 6.655371489097715E-11 -6.210779662048145E-11 7.956414029211366E-11

[ 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 15.8   n/a MPO433632  
diameter diameter 4.091 km 2.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249157 (2008 BU9)          Discovered 2008-Jan-16 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ 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-Aug-22 05:11 00:05 Jupiter 1.86644629713881 1.86644555376075 1.86644704051677 3.09877057141887 2.94868577161177 2425845.716161835 5.22657309442408 64.790413096484 32.9349977176291 84.7291447286521 1885282.16764859 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
1939-Nov-08 17:32 00:04 Jupiter 1.92243959314366 1.92243862059933 1.92244056569062 3.81446102223931 3.69714990707389 2429576.230611646 4.45758698430047 209.073515624414 32.5125377667701 -83.687831916234 1791575.82297322 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
2001-Oct-06 16:27 < 00:01 Jupiter 1.9256921390431 1.9256915170017 1.92569276108451 3.03959308400769 2.89126598990871 2452189.185406175 0.88958017024435 74.8785071119782 18.4367058432454 -79.1563958791588 2382194.97541972 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
2011-Dec-18 23:53 < 00:01 Jupiter 1.86974586822428 1.86974507362305 1.8697466628254 3.37356343088293 3.23649511962335 2455914.495386776 0.425006667413583 59.0119107287876 26.6304044535269 -75.6189528043893 1750498.25033167 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
2084-Feb-02 10:28 00:04 Jupiter 1.88603680086321 1.88603602315019 1.88603757857612 3.0800357125758 2.93060000638935 2482257.935845281 4.31582537229582 62.6315957651275 31.6544277262844 -86.2020167161267 2083939.70259669 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
2094-Apr-19 10:33 00:05 Jupiter 1.91860178910228 1.91860048162285 1.91860309658781 3.76758153944194 3.64852196578842 2485986.939710400 4.82093033466475 229.878700713689 31.5964332448869 -79.4414194505922 1739262.4586067 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
2156-Mar-20 04:51 00:09 Jupiter 1.94748506668787 1.94748339557998 1.94748673779543 3.08232645214711 2.93783482268552 2508601.702161646 8.60102254721251 89.5841295268627 55.9758394427468 -56.812635337576 1267738.73460179 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
2166-May-31 12:17 00:09 Jupiter 1.88128414292316 1.88128326807235 1.88128501777578 3.32516894683886 3.18689124608995 2512326.011778307 9.31994807452785 196.852591710204 28.2775845466419 -89.4529998104526 1716542.65512643 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
2176-Aug-25 05:45 00:10 Jupiter 1.99791715365321 1.99791445939371 1.99791984794246 4.17300832390626 4.07014654860229 2516064.739743284 9.52707951095803 429.22448791004 34.2455323479056 -74.4544182886173 1948576.90030825 T 14 CATAB v2.0f-lin.ifort 2020-Nov-12 00:19:59 2020-Nov-12 00:19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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