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JPL Small-Body Database Browser
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8344 Babette (1987 BB)
Classification: Main-belt Asteroid          SPK-ID: 2008344
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605219079398494 2.8762e-08  
a 2.37720063959605 8.3246e-09 au
q 1.995607857372262 6.954e-08 au
i .3851700613892933 3.3093e-06 deg
node 145.5739557482796 0.00056377 deg
peri 353.7232344729397 0.0005639 deg
M 279.7858579818233 1.368e-05 deg
tp 2458898.794761341802
(2020-Feb-19.29476134)
5.1609e-05 TDB
period 1338.742912175199
3.67
7.0321e-06
1.925e-08
d
yr
n .2689089867262636 1.4125e-09 deg/d
Q 2.758793421819838 9.6608e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1518  
   data-arc span      11967 days (32.76 yr)  
   first obs. used      1987-01-25  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5166  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:09:30  

Additional Information
 Earth MOID = 1.00932 au 
 Jupiter MOID = 2.26513 au 
 T_jup = 3.523 
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Orbital Elements at Epoch 2456429.5 (2013-May-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1601187702537778 2.8838e-08  
q 1.996514560364826 6.9677e-08 au
tp 2456221.607064768188
(2012-Oct-21.10706477)
4.6608e-05 TDB
node 145.472522459229 0.00056475 deg
peri 353.9083959728843 0.00056488 deg
i .3844632744857479 3.3092e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1518  
   data-arc span      11967 days (32.76 yr)  
   first obs. used      1987-01-25  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5166  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:09:30  

Additional Information
 Jupiter MOID = 2.26513 au 
 T_jup = 3.523 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.316058755977318E-16 -1.999283080610268E-15 -1.277839228849606E-14 -1.279920088497405E-15 1.189159033653726E-14 -4.748051168410532E-17
q -1.999283080610268E-15 4.854850466455273E-15 1.0373679670285E-13 1.612359335214305E-15 -6.438131190235008E-15 1.242755339347028E-16
tp -1.277839228849606E-14 1.0373679670285E-13 2.17226241194998E-9 9.928207536699218E-12 5.81856169205623E-10 8.645835254415019E-14
node -1.279920088497405E-15 1.612359335214305E-15 9.928207536699218E-12 3.189404683489104E-7 -3.189306552865068E-7 1.594232891965711E-10
peri 1.189159033653726E-14 -6.438131190235008E-15 5.81856169205623E-10 -3.189306552865068E-7 3.190888403263925E-7 -1.593963643906446E-10
i -4.748051168410532E-17 1.242755339347028E-16 8.645835254415019E-14 1.594232891965711E-10 -1.593963643906446E-10 1.095102113773077E-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 14.6   n/a MPO309216  
diameter diameter 2.695 km 0.489 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.292   0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8344 Babette           Discovered 1987 Jan. 25 by T. Niijima and T. Urata at Ojima.
Babette ("Babbie") Whipple (née Samelson, b. 1918) was a teacher, researcher and psychotherapist, and as the wife of astronomer Fred L. Whipple was a firm believer in supporting science and in encouraging social contacts among scientists (and scientists' spouses) as a way of promoting interdisciplinary discussion.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

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Alternate Designations
 1987 BB = 1991 GZ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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