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JPL Small-Body Database Browser
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9900 Llull (1997 LL6)
Classification: Main-belt Asteroid          SPK-ID: 2009900
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2114499151877098 3.5057e-08  
a 2.140926584968659 5.0553e-09 au
q 1.688227840153923 7.2999e-08 au
i 3.492468048515195 4.2308e-06 deg
node 136.9220755496566 4.9796e-05 deg
peri 119.6917255547282 5.0871e-05 deg
M .3917408206002851 9.9008e-06 deg
tp 2458599.254919540142
(2019-Apr-25.75491954)
3.1467e-05 TDB
period 1144.197750089228
3.13
4.0526e-06
1.11e-08
d
yr
n .314630928064599 1.1144e-09 deg/d
Q 2.593625329783396 6.1242e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      23213 days (63.55 yr)  
   first obs. used      1956-04-12  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47142  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:20:21  

Additional Information
 Earth MOID = .676367 au 
 Jupiter MOID = 2.46649 au 
 T_jup = 3.682 
[ 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 13.8   n/a MPO431614  
diameter diameter 3.688 km 0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 183.319 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.517   0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9900 Llull           Discovered 1997 June 13 by M. Blasco at Mallorca.
Named in memory of Ramon Llull (1232-1316), writer, philosopher, mystic, missionary and man of science, born in Mallorca. Among his more than 265 works and treatises, his Tractatus novus de astronomia, written in Paris around 1297, adheres to the ideas of Ptolomy.
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 ]
Alternate Designations
 1997 LL6 = 1956 GD = 1969 PT = 1975 JB = 1978 GC2 = 1979 YQ3 = 1984 DA2 = 1991 PC21 = 1991 SD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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