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100520 (1997 BU2)
Classification: Main-belt Asteroid          SPK-ID: 2100520
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774195778056626 4.9368e-08  
a 2.535598683898559 1.0271e-08 au
q 2.085733835916683 1.2731e-07 au
i 6.724354991491434 4.8835e-06 deg
node 117.1520850624663 3.3099e-05 deg
peri 66.58708416031152 3.6839e-05 deg
M 298.7060368498671 1.8737e-05 deg
tp 2459451.592884344966
(2021-Aug-25.09288434)
7.7482e-05 TDB
period 1474.752711662305
4.04
8.9608e-06
2.453e-08
d
yr
n .2441087221966975 1.4832e-09 deg/d
Q 2.985463531880435 1.2093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      8806 days (24.11 yr)  
   first obs. used      1997-01-30  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:33  

Additional Information
 Earth MOID = 1.09885 au 
 Jupiter MOID = 1.99802 au 
 T_jup = 3.417 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457273.5 (2015-Sep-08.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1773736395429769 4.9421e-08  
q 2.085783853942658 1.2741e-07 au
tp 2457978.507636692135
(2017-Aug-13.00763669)
7.3698e-05 TDB
node 117.1940473791321 3.3114e-05 deg
peri 66.79929506605056 3.6863e-05 deg
i 6.723009245995525 4.8825e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      8806 days (24.11 yr)  
   first obs. used      1997-01-30  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:33  

Additional Information
 Jupiter MOID = 1.99802 au 
 T_jup = 3.417 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.44244631254186E-15 -6.283372383422074E-15 -2.162212175466832E-12 1.387824567860887E-14 -4.070235428794499E-13 4.221958659550076E-15
q -6.283372383422074E-15 1.623233911079864E-14 5.71531413565507E-12 -3.517837775237065E-14 1.072187899635796E-12 -1.083930234513753E-14
tp -2.162212175466832E-12 5.71531413565507E-12 5.431404222088802E-9 -2.895245685848517E-11 1.198296088375838E-9 -2.388386180974523E-12
node 1.387824567860887E-14 -3.517837775237065E-14 -2.895245685848517E-11 1.096518358205853E-9 -1.094540897312114E-9 8.411528224353874E-12
peri -4.070235428794499E-13 1.072187899635796E-12 1.198296088375838E-9 -1.094540897312114E-9 1.358852234057348E-9 -8.748423606107273E-12
i 4.221958659550076E-15 -1.083930234513753E-14 -2.388386180974523E-12 8.411528224353874E-12 -8.748423606107273E-12 2.383869062876071E-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 15.6   n/a MPO299587  

100520 (1997 BU2)          Discovered 1997-Jan-30 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 BU2 = 1998 MH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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