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9969 Braille (1992 KD)
Classification: Mars-crossing Asteroid          SPK-ID: 2009969
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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 2-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 has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4334094077039079 7.2265e-08  
a 2.340770428155753 1.3348e-08 au
q 1.326258503317945 1.6937e-07 au
i 28.99758428003122 1.0273e-05 deg
node 241.9593686296033 1.7858e-05 deg
peri 356.1306417374952 2.2432e-05 deg
M 266.7876177298255 2.4194e-05 deg
tp 2457939.194205767678
9.0618e-05 JED
period 1308.087092152118
n .2752110330877994 2.354e-09 deg/d
Q 3.35528235299356 1.9132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      8649 days (23.68 yr)  
   first obs. used      1992-05-27  
   last obs. used      2016-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64136  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:37:24  

Additional Information
 Earth MOID = .314315 au 
 Jupiter MOID = 1.67528 au 
 T_jup = 3.280 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8 mag n/a MPO358727  
extent extent 2.1x1.0x1.0 km n/a Oberst et al., 2001, Icarus, 153:16-23  
rotation period rot_per 226.4 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Di Martino, M.; Oberst, J.; Mottola, S.; DS1 Science Team (1999) Bul. Amer. Astron. Soc. 31, 1131.]
[Oberst, J.; Mottola, S.; Di Martino, M.; Hicks, M.; et al. (2001) Icarus 153, 16-23.]
SMASSII spectral type spec_B Q   n/a Binzel et al. (2001) Icarus 151, 139-149  

9969 Braille           Discovered 1992 May 27 by E. F. Helin and K. J. Lawrence at Palomar.
Named in memory of Louis Braille (1809-1852), who invented the Braille language so that those who could not see could obtain knowledge and explore through the `written' word. Likewise, this minor planet provides knowledge about our universe and its origins to the people of the earth who, through Deep Space 1, are also able to explore and discover what previously they could not `see'. Name proposed by the discoverers following a suggetion by Kerry Babcock through The Planetary Society's "Name That Asteroid" contest.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-03 12:29 UT
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