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

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 68 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4333162350431091 5.8505e-08  
a 2.341714614127561 5.6708e-09 au
q 1.327011653988379 1.3867e-07 au
i 28.99876336000423 6.4941e-06 deg
node 241.9521470263737 1.4733e-05 deg
peri 356.1615373385569 1.6682e-05 deg
M 181.8806120138104 9.8126e-06 deg
tp 2459248.101833656263
(2021-Feb-02.60183366)
3.7288e-05 TDB
period 1308.878627711942
3.58
4.7545e-06
1.302e-08
d
yr
n .2750446010638267 9.9909e-10 deg/d
Q 3.356417574266743 8.1281e-09 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      9643 days (26.40 yr)  
   first obs. used      1992-05-27  
   last obs. used      2018-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58169  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-30 16:57:05  

Additional Information
 Earth MOID = .315151 au 
 Jupiter MOID = 1.67816 au 
 T_jup = 3.280 
[ show covariance matrix ]

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 15.9   n/a MPO395097  
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. 2019-January); 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) Bull. 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

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