Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
39841 (1998 BU24)
Classification: Main-belt Asteroid          SPK-ID: 2039841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1565853444272154 3.5677e-08  
a 2.45318697152402 1.0143e-08 au
q 2.069053844643574 8.9817e-08 au
i 3.387613565302775 3.9354e-06 deg
node 65.4034851973755 6.6015e-05 deg
peri 30.51580110853079 6.7299e-05 deg
M 324.2443514130071 1.5217e-05 deg
tp 2459139.891586387281
(2020-Oct-17.39158639)
5.9784e-05 TDB
period 1403.441780040196
3.84
8.7044e-06
2.383e-08
d
yr
n .2565122437709451 1.5909e-09 deg/d
Q 2.837320098404466 1.1732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      9446 days (25.86 yr)  
   first obs. used      1993-12-16  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57499  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:49:17  

Additional Information
 Earth MOID = 1.08667 au 
 Jupiter MOID = 2.3305 au 
 T_jup = 3.475 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456877.5 (2014-Aug-08.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553494372833272 3.5525e-08  
q 2.072568542125633 8.9321e-08 au
tp 2456330.042196231216
(2013-Feb-06.54219623)
5.3062e-05 TDB
node 65.42965412030726 6.6011e-05 deg
peri 30.1174767394052 6.7327e-05 deg
i 3.388323412345348 3.9337e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      9446 days (25.86 yr)  
   first obs. used      1993-12-16  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57499  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:49:17  

Additional Information
 Jupiter MOID = 2.3305 au 
 T_jup = 3.475 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.262035725521952E-15 -3.159009793061379E-15 -1.973063631881207E-13 6.082811000939233E-15 -5.033797911530827E-14 3.289030395447888E-16
q -3.159009793061379E-15 7.978288792390626E-15 6.150943996073758E-13 -1.594007056748452E-14 1.607626237351238E-13 -5.829639180915142E-16
tp -1.973063631881207E-13 6.150943996073758E-13 2.815611661028599E-9 -1.052398876479229E-11 7.178028126421424E-10 1.348547655704796E-12
node 6.082811000939233E-15 -1.594007056748452E-14 -1.052398876479229E-11 4.357416749024145E-9 -4.352204452727493E-9 -5.595330815099031E-12
peri -5.033797911530827E-14 1.607626237351238E-13 7.178028126421424E-10 -4.352204452727493E-9 4.532962477628063E-9 5.926869970658888E-12
i 3.289030395447888E-16 -5.829639180915142E-16 1.348547655704796E-12 -5.595330815099031E-12 5.926869970658888E-12 1.547426223087723E-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 15.5   n/a MPO449243  
diameter diameter 2.127 km 0.359 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.246   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39841 (1998 BU24)          Discovered 1998-Jan-28 by Kobayashi, T. at Oizumi
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 BU24 = 2000 QG99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-03 09:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin