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18244 Anneila (3008 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2018244
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1089530879511431 9.6145e-08  
a 2.726717214792057 3.3961e-08 AU
q 2.429632954270922 2.7045e-07 AU
i 9.090367371080529 1.2296e-05 deg
node 176.4879811329043 4.4876e-05 deg
peri 144.3328203873897 6.8164e-05 deg
M 41.85047882280774 5.4555e-05 deg
tp 2456609.313814932421
(2013-Nov-12.81381493)
0.00024819 JED
period 1644.593528206399
4.50
3.0725e-05
8.412e-08
d
yr
n .2188990737380668 4.0895e-09 deg/d
Q 3.023801475313192 3.7661e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      398  
   data-arc span      14102 days (38.61 yr)  
   first obs. used      1973-09-19  
   last obs. used      2012-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57136  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:03:50  

Additional Information
 Earth MOID = 1.42315 AU 
 T_jup = 3.329 
[ 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 14.9 mag n/a MPO229179  

18244 Anneila           Discovered 1973 Sept. 30 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Anneila Sargent (b. 1942), professor at the California Institute for Technology and director of the Owens Valley Radio Observatory, is known for her ground-breaking observations of protoplanetary disks around young stars using emerging millimeter interferometers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

[ show close-approach data ]
Alternate Designations
 3008 T-2 = 1999 JB129 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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